Advanced persistent threats (APTs) are complex, multi-stage cyber attacks designed to compromise systems and steal sensitive information over an extended period. They use zero-day vulnerabilities, custom malware, and social engineering to gain unauthorized access to networks and evade detection.
Another distinguishing feature of APTs is their ability to adapt to the security measures of the target network. They often update their malware and change their tactics to avoid being caught, making them exceptionally challenging to defend against.