|Alert Message||Attempt to login using a non-existent user|
This rule detects attempts to log into accounts that do not exist on the system. This may indicate that an attacker is attempting to find default accounts to log into, or is carrying out a brute force attack.
Rule: 5710 (level 5) -> 'Attempt to login using a non-existent user' Src IP: 18.104.22.168 Src Location: VN / An Giang Aug 11 20:46:20 www sshd: Invalid user aconnelly from 22.214.171.124
 False Positives
There are no known false positives with this rule. If you believe this is a false positive, please report this to our security team to determine if this is a legitimate case, or if its clever attack on your system. Do not disable this rule.
Instructions to report false positives are detailed on the Reporting False Positives wiki page. If it is a false positive, we will fix the issue in the rules and get a release out to you promptly.
 Additional Information
 Similar Rules
 Knowledge Base Articles
 Outside References