Threat actors have been observed leveraging a legitimate but outdated WordPress plugin to surreptitiously backdoor websites as part of an ongoing campaign, Sucuri revealed in a report published last week.
The plugin in question is Eval PHP, released by a developer named flashpixx. It allows users to insert PHP code pages and posts of WordPress sites that's then executed every time the posts are http://dlvr.it/Sn1zYc
