Your web server's image processor could be malware hiding in plain sight.
I'm going to describe an interesting type of malware the Malware Intelligence Team recently uncovered during a recent research operation.
At the time of writing, there were 11,320 cases of it detected and neutralized on 265 websites across 183 servers.
It is a particularly ingenious and potentially destructive type of malware: it is designed to appear as a legitimate image processor, and can act as a backdoor to your web server.
A backdoor is malicious software that lets a hacker get back into your server even after you detect and remove their access credentials. When a hacker gets into your site, the first thing they do is upload a backdoor.