Let's first take a quick look at why this technique is being utlized by attackers. This is not a completely new tactic however it is not as well known by the defensive community so we want to raise awareness. Web attackers have have been using a method of stashing pieces of their PHP backdoor exploit code within the meta-data headers of these image files to evade detections. Do any of these pictures look suspicious?įirst appearances may be deceiving.
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