AIDE is a UNIX systems integrity checker, developed beginning in 1999. Rami Lehti and Pablo Virolainen launched the development, followed by Richard van den Berg from 2003 to 2010, and now by Hannes von Haugwitz.
Its goal is to establish a fingerprint of a system’s files at the time of installation and later to confirm the system’s alignment with that fingerprint. This allows the administrator to identify any suspicious file alterations, which are typically a sign of an intrusion on the system.
AIDE is available under the GPL.
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