The second constantly monitors configuration files, passwords, and other critical areas and logs all changes. Hollywood's version of ID tracks hackers sneaking step by step through your system while the SWAT team closes in on their headquarters. Surprise, but this fantasy remains fiction. Tools to track each hacker footstep don't exist. If they did, legal experts warn against trying to retaliate because most attacks originate from innocent third parties who are victims themselves.
Intrusion detection provides the benefit of watching internal users as well as external.
Just as most retail goods disappear out the back door rather than the front, most security breaches come from within. Key ID functions include monitoring and analyzing all users' activities, checking system configurations, tracking user policy violations, recognizing attacks if possible, and analyzing abnormal activity patterns. These operations don't differentiate between internal and external users. The first security precaution is to keep your software current with the latest patches and fixes. Hackers try the easy ways first, just like car thieves look for unlocked cars.