ADAM PULSE Knowledge Base
Cybersecurity · Network Monitoring · Detection

How do I know if someone is trying to hack my network?

By Michael Obraitis, Managing Partner, and Michael Dale, CEO·Published August 12, 2026·Last reviewed August 2026·ADAM Pulse Knowledge Base

The short answer: You may be able to identify attempted cyberattacks through firewall logs, authentication failures, endpoint security alerts, unusual network traffic, unexpected devices, suspicious remote access, configuration changes, vulnerability alerts, and other abnormal behavior. But not every unusual event is an attack, and not every attack produces an obvious warning.

That is why effective cybersecurity depends on more than simply collecting alerts.

It requires visibility, context, investigation, and response.

A firewall might record thousands of connection attempts.

A user might enter the wrong password six times.

An internet connection might suddenly begin transferring far more data than normal.

A server might communicate with an unfamiliar address overseas.

A security camera might unexpectedly stop responding.

A new device might appear on the network.

A VPN account might authenticate at 2:13 in the morning.

Are those cyberattacks?

Maybe.

Maybe not.

The real challenge is determining:

What happened?

Is it normal?

Is it suspicious?

Was the attempt successful?

What else happened at the same time?

Does someone need to investigate?

And perhaps most importantly:

Who is watching?

Can You Tell When Someone Is Trying to Hack Your Network?

Sometimes.

Many attempted attacks leave evidence.

That evidence can appear in:

The difficulty is that modern business networks produce enormous amounts of activity.

A failed login is not automatically a cyberattack.

An unfamiliar IP address is not automatically malicious.

A computer becoming unreachable does not necessarily mean it was compromised.

A spike in bandwidth could be malware.

It could also be a legitimate backup.

This is where cybersecurity becomes less about simply seeing an event and more about understanding the event.

The National Institute of Standards and Technology places this responsibility within the Detect function of its Cybersecurity Framework.

Detection is about finding and analyzing possible cybersecurity attacks and compromises so organizations can respond appropriately.

What Are the Signs Someone May Be Trying to Hack Your Network?

There is no single universal sign of a cyberattack.

Instead, security teams look for combinations of events and behaviors that deviate from what is expected.

Some common indicators deserve attention.

1. Repeated Failed Login Attempts

One of the easiest examples to understand is repeated authentication failure.

Suppose an account normally logs in successfully a few times each day.

Then suddenly the system records:

50 failed attempts.

Then 100.

Then 500.

That deserves investigation.

An automated attacker may be attempting to guess the password.

This is commonly associated with brute force attacks.

Attackers may target services such as:

The important point is not that every failed login represents an attack.

People forget passwords.

Devices retain old credentials.

Applications can be misconfigured.

But patterns matter.

One failed login may mean very little.

Five hundred failures from unusual sources against administrative accounts mean something very different.

2. Successful Login After Many Failures

This can be even more important.

Imagine seeing:

Failure

Failure

Failure

Failure

Failure

followed by:

SUCCESS

That successful authentication deserves investigation.

The questions become:

Was that the legitimate user?

Was the location expected?

Was the device recognized?

Was multifactor authentication used?

What did the account do afterward?

A failed attack is concerning.

A successful authentication following suspicious activity can be considerably more serious.

3. Logins at Unusual Times

Timing can provide useful context.

Imagine an employee normally works Monday through Friday between 8:00 AM and 6:00 PM.

Then their administrative account authenticates at:

2:37 AM on Sunday.

That does not prove an account has been compromised.

Maybe the employee was working late.

Maybe an automated process uses the account.

Maybe a legitimate administrator was performing maintenance.

But unusual timing should prompt the question:

Is this expected?

Security monitoring is frequently about identifying events that differ from normal behavior.

4. Logins From Unexpected Locations

A similar principle applies to geography.

Suppose an employee normally works in Atlanta.

Their account suddenly authenticates from another country.

That deserves investigation.

But geography by itself should not be treated as absolute proof.

Employees travel.

VPN services can change apparent locations.

Mobile networks behave differently.

Cloud applications may generate confusing location information.

The more useful question is:

Does this authentication make sense when combined with what else we know?

Cybersecurity rarely benefits from interpreting one signal in isolation.

5. Unexpected Remote Access

Remote access deserves particular attention because successful remote access can provide someone with significant control over business systems.

Organizations may use:

These systems should be monitored for unusual activity.

For example:

Who connected?

When?

From where?

Which system did they access?

Was the connection expected?

What authentication method was used?

What happened after the connection was established?

The Federal Trade Commission recommends strong security controls for remote access, including multifactor authentication and limiting access according to business need.

6. A New or Unknown Device Appears

Imagine looking at your business network and discovering a device you do not recognize.

What is it?

It could be completely harmless.

Perhaps someone installed:

But the business should still be able to answer:

Who installed it?

Who owns it?

What does it do?

Why is it connected?

What network can it access?

Is it properly secured?

NIST cybersecurity guidance emphasizes monitoring for unauthorized connections, devices, users, and software.

That is difficult to accomplish unless an organization first understands what should normally be present.

7. Unexpected Network Traffic

Businesses develop patterns.

Offices become busy in the morning.

Cloud backups may run overnight.

Video meetings generate predictable bandwidth.

Voice systems communicate continuously.

Point of sale systems communicate with specific services.

Applications connect to known platforms.

When those patterns change significantly, the difference may deserve investigation.

Examples could include:

Again, abnormal does not automatically mean malicious.

The purpose of monitoring is to provide enough information to ask the right questions.

Why Outbound Traffic Matters

Businesses naturally spend a great deal of time thinking about what is coming into their network.

But what is going out can be equally important.

Suppose malware successfully reaches an employee computer.

The initial compromise has already occurred.

The malware may then attempt to communicate with external infrastructure.

It could potentially:

This is why cybersecurity monitoring should not focus exclusively on someone trying to enter the front door.

Sometimes the important clue is something inside trying to communicate outward.

8. Connections to Known Malicious Addresses

Cybersecurity organizations maintain information about infrastructure associated with suspicious or malicious activity.

This is commonly part of threat intelligence.

Indicators may include:

If one of your systems communicates with infrastructure associated with known malicious activity, that may deserve immediate investigation.

But threat intelligence must be interpreted carefully.

An address appearing on a threat list does not automatically prove your system has been compromised.

Cloud infrastructure can be shared.

Addresses can change ownership.

Threat information can become outdated.

False positives exist.

This reinforces a recurring principle:

An indicator is the beginning of an investigation, not necessarily the conclusion.

9. Unexpected Changes to Firewall Rules

Firewall configuration changes can be particularly significant.

Imagine a firewall rule suddenly appears allowing outside access to an internal system.

The important questions become:

Who created the rule?

When was it created?

Why was it created?

Was there an approved change request?

Does the rule expose something unnecessarily?

Should it still exist?

Sometimes the answer is completely legitimate.

A vendor needed temporary access.

An application was deployed.

An administrator was troubleshooting.

But temporary rules have a tendency to become permanent if nobody reviews them.

Configuration monitoring can therefore be just as important as availability monitoring.

10. Security Tools Suddenly Stop Working

This may be one of the more concerning indicators.

Imagine:

Your endpoint protection stops reporting.

Logging suddenly disappears.

Security services are disabled.

A monitoring agent stops communicating.

Firewall logs become unavailable.

Backup jobs stop running.

Could that be a technical failure?

Absolutely.

But attackers may also attempt to disable security technologies after obtaining access.

Therefore an organization should not only monitor whether business applications are operating.

It should also monitor the systems responsible for protecting and observing those applications.

A security tool unexpectedly going silent is itself information.

11. Antivirus or Endpoint Security Alerts

Modern endpoint protection systems can identify suspicious activity occurring on employee computers and servers.

Depending on the technology, alerts may involve:

An alert does not automatically tell the entire story.

Security teams still need to determine:

What device generated the alert?

Who uses it?

What was detected?

Was it blocked?

Did anything execute?

Did the activity spread?

Is isolation necessary?

Detection without investigation can leave critical questions unanswered.

12. Unexpected Software Appears

A newly installed application may be perfectly legitimate.

But unexplained software deserves attention.

Questions include:

Who installed it?

Does the user have permission to install software?

Is the application approved?

Where did it come from?

What permissions does it have?

Is it communicating externally?

This is one reason asset inventory should include not only computers and servers but also important software.

13. Systems Suddenly Become Slow

Users frequently associate slow computers with hacking.

The reality is more complicated.

A slow system can result from:

Performance alone does not prove a compromise.

But an unexplained performance change combined with other indicators can become valuable evidence.

For example:

Computer suddenly becomes slow

plus

Unknown process consuming processor resources

plus

Unusual outbound traffic

is much more interesting than performance degradation alone.

14. Unexplained Bandwidth Consumption

Unexpected bandwidth can have many legitimate causes.

Someone may upload a large file.

Cloud backups may be running.

Software updates may be downloading.

Employees may be participating in video meetings.

But a significant unexplained increase in network traffic should still be investigated.

The important question is:

What is generating the traffic?

Then:

Where is it going?

Network monitoring becomes particularly valuable when organizations can compare current conditions with normal historical behavior.

15. A System Begins Communicating With Many Other Systems

Imagine an employee laptop normally communicates with:

Then suddenly it begins attempting connections to hundreds of other internal devices.

Why?

There may be a legitimate explanation.

But this behavior can also be associated with automated discovery or attempts to move through a network.

A compromised computer may not be the attacker's final destination.

It may be the first foothold.

What Is Lateral Movement?

After gaining access to one system, an attacker may attempt to reach additional systems.

This activity is often called lateral movement.

Imagine a burglar enters a large office building through one unlocked window.

Getting into the building is the first success.

Now the burglar begins trying doors inside.

Which rooms are unlocked?

Where are the valuable files?

Where is the server room?

Which doors provide greater access?

Cyber attackers can behave similarly.

A compromised laptop could potentially become a starting point for attempts to reach:

This is one reason network segmentation and access controls matter.

Compromising one device should not automatically provide unrestricted access to everything else.

16. New Administrative Accounts Appear

Administrative accounts deserve close monitoring.

If a new privileged account suddenly appears, an organization should know why.

Ask:

Who created it?

Who approved it?

Who owns it?

What permissions does it have?

Does it require multifactor authentication?

When was it first used?

Attackers who obtain sufficient access may attempt to establish additional ways to return later.

Unexpected privileged accounts can therefore be especially important indicators.

17. Passwords or Security Settings Change Unexpectedly

Users should pay attention when:

These may indicate account compromise or unauthorized administrative activity.

Identity monitoring has become increasingly important because modern businesses rely heavily on cloud applications.

The network perimeter is no longer the only boundary requiring protection.

Identity itself has become a critical security boundary.

18. Employees Report Strange Behavior

Technology is not the only detection system.

Employees often notice things first.

They may report:

Employees should know where to report suspicious behavior and should feel encouraged to report it quickly.

A user saying:

"Something seems strange"

should not automatically be dismissed because monitoring tools have not generated an alert.

Human observations can provide valuable context.

What Are Firewall Logs?

A firewall log is a record of activity observed or processed by the firewall.

Depending on the firewall and configuration, logs may include information such as:

Logs are valuable because they allow investigators to reconstruct activity.

Without logs, a company may know:

"Something went wrong."

With useful logs, investigators may be able to determine:

what happened, when it happened, where it originated, what system was involved, and what happened next.

Why Are Logs Important in Cybersecurity?

Imagine a physical business without security cameras, access records, alarm history, or visitor logs.

If something goes missing, the investigation becomes difficult.

Cybersecurity logs perform a similar function for technology.

NIST has specifically emphasized log monitoring as part of cybersecurity detection.

Logs can record events such as system changes, account activity, and network communications.

When organizations understand normal behavior, those records can help identify anomalies.

But merely storing logs is not enough.

Someone or something needs to examine them.

The Difference Between Logging and Monitoring

This distinction is extremely important.

Logging means recording what happened.

Monitoring means paying attention to what is happening.

Consider a security camera.

A camera can record a building for 24 hours.

But if nobody watches the footage until three weeks after a burglary, the recording did not provide real time protection.

It provided forensic evidence.

Both are valuable.

But they serve different purposes.

Cybersecurity works similarly.

Logs provide historical evidence.

Monitoring attempts to identify important conditions while they can still influence the outcome.

What Is Continuous Monitoring?

Continuous monitoring is the ongoing observation of systems and activities to identify events requiring attention.

NIST has long included security continuous monitoring within its cybersecurity guidance.

The purpose is not necessarily to have a human stare at a dashboard every second.

Automation can perform much of the observation.

Technology can watch for:

The technology identifies a condition.

Then appropriate processes determine what happens next.

What Is an IDS?

An Intrusion Detection System, commonly called an IDS, monitors activity looking for indications of potentially malicious behavior.

The system may examine network traffic or activity and generate alerts when certain patterns are detected.

The key word is:

Detection.

An IDS attempts to tell you:

"This activity may deserve attention."

What Is an IPS?

An Intrusion Prevention System, or IPS, goes further by potentially taking automated action against detected malicious activity.

For example, depending on its configuration and capabilities, an IPS may block certain traffic.

This introduces a fundamental cybersecurity balancing act.

Blocking malicious activity automatically can provide protection.

But overly aggressive blocking can disrupt legitimate business activity.

That is why tuning, context, and appropriate configuration are important.

What Is a SIEM?

A Security Information and Event Management platform, commonly called a SIEM, collects and analyzes security related information from multiple systems.

Instead of separately examining:

a SIEM can help centralize that information.

This makes correlation possible.

For example:

At 2:11 AM, an administrator account experiences repeated authentication failures.

At 2:14 AM, the account successfully authenticates.

At 2:16 AM, a firewall rule changes.

At 2:18 AM, an internal server begins communicating with an unfamiliar external address.

Individually, those events might appear in four different systems.

Together, they tell a much more interesting story.

That is the value of correlation.

What Is Security Event Correlation?

Correlation means connecting multiple events so they can be evaluated together.

This is one of the most important ideas in modern monitoring.

Imagine these isolated facts:

The internet circuit experienced packet loss.

A firewall stopped responding.

A VPN tunnel went down.

A branch office lost phone service.

Are these four different incidents?

Maybe.

Or perhaps one underlying event caused all four symptoms.

The same principle applies to cybersecurity.

Context can transform disconnected alerts into meaningful information.

What Is a False Positive?

A false positive occurs when a monitoring or security system identifies something as potentially dangerous even though the activity is legitimate.

False positives are unavoidable in many monitoring environments.

Examples might include:

The objective should not necessarily be:

Zero alerts.

That could mean the organization is not looking carefully enough.

The better objective is:

Useful alerts that can be efficiently validated and prioritized.

Why Too Many Alerts Can Become a Security Problem

More alerts do not automatically create better security.

An organization can generate thousands of alerts every day.

If nobody can realistically review them, they become noise.

This is commonly described as alert fatigue.

When everything appears urgent, people have difficulty identifying what actually deserves attention.

That creates an important monitoring principle:

> The goal is not to create the most alerts. The goal is to identify the alerts that matter.

Good monitoring should help answer:

What changed?

How important is it?

Is it expected?

What is affected?

Does it require immediate escalation?

What Is a Security Baseline?

It is difficult to identify unusual behavior without understanding normal behavior.

A baseline provides a reference for what is expected.

For example, a business may normally have:

Then something changes.

There are suddenly 61 devices.

A VPN tunnel disappears.

Bandwidth triples overnight.

A new administrative account appears.

A server begins communicating somewhere unexpected.

Monitoring can highlight these deviations.

The critical question becomes:

Why did this change?

Is Every Network Scan an Attack?

No.

This is an important distinction.

Internet systems routinely encounter automated traffic.

Some comes from legitimate:

Other traffic may come from:

Therefore seeing a port scan or unfamiliar connection should not automatically result in:

"We are being hacked!"

The event should be interpreted in context.

What source generated it?

What did it attempt?

Was anything exposed?

Was access allowed?

Was authentication attempted?

Was authentication successful?

Did anything happen afterward?

That is the difference between seeing activity and understanding risk.

Can My Business Be Attacked Without Knowing It?

Yes.

Not every successful cyberattack produces an obvious screen saying:

YOU HAVE BEEN HACKED.

Attackers may benefit from remaining unnoticed.

Depending on their objective, they may want to maintain access.

That makes detection important.

A business should not assume:

"Nothing looks wrong, so we must be secure."

Absence of obvious symptoms is not evidence that nothing has happened.

This is precisely why monitoring, logging, endpoint protection, identity security, vulnerability management, and other defensive layers exist.

What Should I Do if I Think Someone Is Trying to Hack My Network?

The correct response depends on the situation.

Do not immediately assume every suspicious event requires shutting down the entire network.

Instead, organizations should have a defined incident response process.

An initial investigation may involve determining:

  1. What generated the alert?
  2. Which system is affected?
  3. Which user or account is involved?
  4. Was access successful?
  5. What activity occurred afterward?
  6. Is the event still happening?
  7. Are additional systems involved?
  8. Does the affected device need to be isolated?
  9. Should credentials be reset?
  10. Should security, IT leadership, management, legal, compliance, insurance providers, or other parties be notified?

The FTC recommends that businesses develop incident response, disaster recovery, and business continuity plans before incidents occur.

That matters because the middle of a cybersecurity incident is a terrible time to decide:

"Who are we supposed to call?"

Why You Should Not Immediately Delete Everything

When businesses discover suspicious activity, their natural reaction may be:

Delete it.

Reboot it.

Wipe the machine.

Reset everything.

Sometimes containment requires rapid action.

But investigators may also need evidence.

Logs, files, timestamps, running processes, authentication information, and network information can help determine what occurred.

Incident response should therefore follow an established process.

The objective is to balance:

Containment

with

Investigation

and

Evidence preservation.

Detection Is Only Useful If Someone Responds

Consider a security system that correctly identifies suspicious activity at 2:00 AM.

It sends an email.

Nobody reads it until 10:00 AM.

Was the technology functioning?

Yes.

Was the organization effectively monitoring?

That is a different question.

This reveals the difference between:

Having monitoring technology

and

having a monitoring process.

The process should establish:

Technology without process creates visibility without accountability.

Why Network Monitoring and Cybersecurity Monitoring Overlap

Network operations and cybersecurity are different disciplines, but they frequently intersect.

Suppose a branch office suddenly becomes unreachable.

Possible explanations include:

At the first alert, you may not know which explanation is correct.

That is why troubleshooting starts with curiosity rather than assumption.

What changed?

What remains reachable?

Can the firewall respond?

Can the ISP gateway respond?

What does traceroute show?

Did another location experience the same issue?

Did configuration change?

Are there security alerts?

Operational monitoring creates information that can help distinguish availability problems from security problems.

This Is Where Visibility Becomes Operationally Important

A business does not simply need another dashboard.

It needs answers.

When something changes, someone needs to determine:

What are we seeing?

What does it mean?

What should we check next?

That philosophy is central to how USA Telecom and ADAM approach network visibility.

ADAM can be part of a broader monitoring strategy focused on identifying important technology conditions and bringing them to human attention.

The objective is not to replace firewalls, endpoint protection, SIEM platforms, identity security, or vulnerability management systems.

Those technologies perform different functions.

The opportunity is to improve visibility, correlation, validation, escalation, and awareness across the environment.

From Alert to Action: What Should Happen?

A useful monitoring workflow can be thought of as seven stages.

1. Detect

Something changes or crosses a defined threshold.

2. Collect

Gather relevant information.

3. Correlate

Determine whether other systems show related events.

4. Validate

Ask whether the behavior is legitimate, expected, suspicious, or unknown.

5. Prioritize

Determine the potential impact and urgency.

6. Escalate

Notify the appropriate people when intervention is necessary.

7. Document

Record what happened, what was discovered, and what was done.

Then monitoring continues.

This creates a cycle:

Detect → Validate → Investigate → Escalate → Remediate → Verify → Learn

The last step matters.

Every meaningful incident should improve future monitoring.

Attackers Automate Their Activity. Defenders Need Automated Awareness.

The first articles in this series established two important ideas.

Attackers do not always need to deliberately select your business.

And automated systems can discover exposed infrastructure.

That leads directly to the third principle:

If attackers automate their search for opportunity, businesses cannot depend entirely on humans manually looking for trouble.

Technology should help watch the environment.

But technology alone is not enough.

A useful cybersecurity model combines:

Automation for scale

with

Human judgment for context.

Automation can tell you:

"Something changed."

A knowledgeable person can ask:

"Why?"

Automation can say:

"This address has a poor reputation."

A person can determine:

"Did it actually reach anything important?"

Automation can report:

"This system stopped responding."

A technician can determine:

"Is this an ISP outage, firewall problem, equipment failure, configuration issue, or security event?"

That combination is where monitoring becomes valuable.

Ten Questions Every Business Should Be Able to Answer

A business does not need to operate a massive security operations center to ask good questions.

Leadership should be able to answer:

1. What are our critical systems?

2. Which systems are accessible from the internet?

3. Who has administrative access?

4. Are we monitoring remote access?

5. Where do our firewall and authentication logs go?

6. What security alerts are we receiving?

7. Who reviews those alerts?

8. What happens when something looks suspicious?

9. Who has authority to isolate a system or disable an account?

10. How quickly would we know if a critical system unexpectedly changed or stopped responding?

If several answers are:

"We're not sure,"

that uncertainty itself identifies an opportunity for improvement.

The Most Important Cybersecurity Question May Be "Who Is Watching?"

Businesses spend significant amounts of money buying technology.

Firewalls.

Endpoint protection.

Email security.

Cloud platforms.

VPNs.

Routers.

Backup systems.

Monitoring tools.

Cyber insurance.

But buying technology is only part of cybersecurity.

Someone must understand:

What is connected.

What is normal.

What changed.

What the alert means.

Whether it matters.

Who needs to know.

What should happen next.

A security event occurring at 2:00 AM does not care whether your IT department starts at 8:00 AM.

A failing internet circuit does not wait until someone opens a dashboard.

A compromised account does not stop being compromised because nobody has read the alert.

That is why continuous visibility matters.

Key Takeaway

You may be able to see evidence that someone is attempting to attack your network.

The evidence could be:

A failed login.

An unexpected connection.

A new device.

An unusual traffic pattern.

A configuration change.

An endpoint alert.

A security tool going silent.

A successful login that does not make sense.

But the existence of an alert does not automatically tell you what happened.

That requires context.

And context requires visibility.

The cybersecurity objective is therefore not simply:

Generate more alerts.

It is:

Know your environment.

Understand normal behavior.

Identify meaningful changes.

Correlate the evidence.

Investigate unusual activity.

Escalate what matters.

Respond quickly.

Document what happened.

Improve what you monitor next time.

Attackers increasingly automate their search for opportunities.

Businesses need to automate awareness of what is happening in their own environment.

And when automation says something is wrong, someone needs to care enough to find out why.

Frequently asked questions

How do I know if someone is trying to hack my network?

Possible signs include repeated failed logins, unexpected remote access, unfamiliar devices, unusual network traffic, endpoint security alerts, unexpected administrative changes, communications with malicious infrastructure, and unusual account behavior. These indicators require investigation because legitimate activity can sometimes produce similar signals.

Can I see hackers trying to access my firewall?

Firewall logs may record connection attempts, blocked traffic, VPN authentication, policy matches, threat events, and other activity, depending on the firewall and its configuration.

What do repeated failed login attempts mean?

A few failed attempts may result from user error. Large or unusual patterns can indicate automated password guessing, brute force activity, outdated saved credentials, misconfigured software, or other conditions requiring investigation.

How can I tell if someone successfully logged into my network?

Authentication logs, VPN records, identity platforms, remote access systems, and other security logs can provide information about successful logins. Suspicious successful authentication should be investigated along with what the account did afterward.

Is an unknown IP address trying to connect to my firewall dangerous?

Not necessarily. Public internet systems routinely receive traffic from unfamiliar addresses. The source, reputation, destination, behavior, frequency, and result of the connection all provide important context.

What is unusual network traffic?

Unusual traffic is network activity that differs from expected patterns. Examples may include unexplained bandwidth spikes, unexpected destinations, new communication patterns, unusual times, or devices behaving differently from their established baseline.

Can a hacker be inside my network without me knowing?

Potentially. Not every compromise creates immediately obvious symptoms. Monitoring, endpoint protection, identity controls, network visibility, logging, and other cybersecurity measures help improve the ability to detect suspicious activity.

Does antivirus tell me if someone is hacking my network?

Endpoint security can identify certain malicious activities on protected devices, but no single security technology sees everything. Network, identity, endpoint, application, and cloud visibility provide different perspectives.

What is the difference between an IDS and an IPS?

An intrusion detection system identifies potentially malicious activity and generates alerts. An intrusion prevention system can also take automated action to block certain detected activity, depending on configuration.

What is a SIEM?

A Security Information and Event Management platform collects and analyzes security information from multiple systems so events can be correlated and investigated more effectively.

Should small businesses monitor their networks?

Yes. The FTC recommends that businesses monitor computers, devices, and software for unauthorized access, investigate unusual network activity, and check networks for unauthorized users or connections.

What should I monitor on my business network?

Important monitoring areas can include firewalls, internet connections, VPNs, servers, critical applications, authentication, endpoints, remote access systems, cloud services, network devices, backups, and security infrastructure.

How often should a network be monitored?

The appropriate monitoring frequency depends on the system and business risk. Critical availability and security conditions can benefit from continuous automated monitoring rather than relying solely on occasional manual reviews.

What should happen when a security alert occurs?

The alert should be validated, investigated, prioritized, and escalated according to the organization's incident response process. Documentation and confirmation of remediation should follow when action is required.

Is every cybersecurity alert an emergency?

No. Security tools can generate false positives and low risk events. Effective monitoring requires context, prioritization, and defined escalation criteria.

What is alert fatigue?

Alert fatigue occurs when people receive so many alerts that identifying truly important events becomes difficult. Effective monitoring should prioritize meaningful conditions rather than simply maximizing alert volume.

Sources

Editorial note

Cybersecurity indicators should be read in context. Individual events — a failed login, an unfamiliar IP address, a slow machine — do not on their own prove compromise. Evaluate suspected events using appropriate security expertise and an established incident response procedure.

Talk to us about your network security

USA Telecom Consulting LLC is a Service-Disabled Veteran-Owned Small Business running a 24/7 NOC. We monitor networks, circuits and firewalls for regulated and defense-supply-chain organizations.

Related articles

Why would hackers target my small business? · How do hackers find vulnerable computers? · Does a firewall stop hackers? · Microsoft is retiring SMS and voice MFA · What is a brute force attack? · What happens after a hacker gets into your server? · What is malware, and how do you know if a file is malicious? · Latency vs jitter vs packet loss · What should businesses actually monitor?

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