Images in signatures can be a problem and raise false concern. The details were originally vague and so misunderstood as the most likely problem. I do believe I have an idea of what is happening but I'm waiting feedback from the guys who definitely know (still don't believe it's harmful)
Will update as soon as I have one.
I hope this is resolved soon. A few years back, a virus was going around that masqueraded as antivirus software, and when you clicked on it it would disable your real antivirus software, ingrain itself into your computer, redirect all of your internet traffic to malicious websites, and then kill your hard drive. I lost a desktop to computer to the virus and so did a few people at DH's work. Actually, everyone I knew had the virus affect at least pne person in their offices. I don't want to scare anyone here, but having experienced bot the virus and the BnB pop-up personally, I truly do not believe it is not "just from an image in a signature". Please, for the sake of your loving BnB users, crack the whip on your tech guys to get this issue resolved quickly.