Secure by HASH

A simple and good way to detect file changes is to generate hashes (for files with specific file extensions), and compares them with the previous scans hashes stored in a database. It's a great way for site owners to be alerted to files that have been added, altered or deleted by a hacker.

PTSource Secure Web

PTSource Secure Web will report any changes to files in an web account whether the file change is an addition, alteration or deletion. PTSource Secure Web was designed not to overwhelm the webmaster. It only provides a report of changes since the last scan (the default is one hour, but can be configured via CRON) and a summary report (daily by default, although, again, it can be configured via CRON).

Because the scan of a 1500 file account takes ~0.75 seconds, PTSource Secure Web can be run frequently without affecting server performance.

To support forensic investigation, the file last modified date and time are held in the database, along with the hash value of the most recent scan (and prior scan for altered files).

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