It can be tricky to spot an attack if you don’t know what to look for. Some things can help you, though.
The first sign of an ongoing brute force attack is that incoming traffic on your network increases, and your system’s performance slows down. You can also search your log files after suspicious activity or use security software designed to spot patterns in your system.
Continue reading to learn more about brute force attack detection.
Slow Performance
If your system suddenly starts running slower than usual, it could be a sign that it is under attack. A brute force attack can put a strain on your system’s resources, which can lead to slower performance.
Increased Network Traffic
If you notice a sudden increase in network traffic, it could signify that a brute force attack is targeting your system. Hackers use automated tools to try and guess your login information repeatedly, which can generate a lot of traffic.
You can use network monitoring tools to keep track of the traffic on your network.
Monitor Log Files
Servers generate log files that record various events, such as login attempts, system changes, and network activity.
By regularly monitoring these log files, you can identify any suspicious activity that may indicate a brute force attack, such as a large number of failed login attempts.
Monitor Login Attempts
One way to detect a brute force attack is by monitoring the number of login attempts on your accounts. If you notice many failed login attempts, it could be a sign that someone is trying to guess your password through a brute force attack.
On a Windows server, you can check if you’ve had any recent unauthorized failed login attempts in your Security Event Log. If the event ID 4625 is showcased from a source that should not have access, then your servers may be exposed.
The related event with ID 4624 documents successful logons.
Unfamiliar Login Locations
If you notice login attempts from strange places, it could be a sign that someone is trying to access your accounts outside your usual network.
Log analysis tools can help you monitor your server logs for any unusual activity, such as a large number of failed login attempts. They alert you if any suspicious activity is detected, allowing you to take action to prevent a brute force attack.
Use a Security Software
Security software, like antivirus, firewall programs, and intrusion prevention systems (IPS), can help detect and prevent brute force attacks.
These programs monitor your computer and online activity, scan for any suspicious activity, gather valuable data reports, and alert you if they detect anything out of the ordinary.
An intrusion prevention system can also detect and block suspicious activity based on a set of given rules.
Conclusion
Brute force attacks are unpredictable and can strike at any given time.
By being aware of these signs and regularly monitoring your system, you can help detect brute force attacks.
But how do you tackle these detected attacks, and how can you prevent them from happening? Check out our next category, Prevention, where we discuss protective measures.
Keep vigilant and take every essential step to protect yourself and your accounts from cyber threats.