Recently I noticed some site notification issues popping up. This appears to be from two sources. One is from some WordPress sites hosted on the same account. Apparently they were compromised some time ago and I had never noticed.
This is due to the base64_decode hack that was (apparently) fixed some time ago. If you run self-hosted WordPress, make sure you update your installations - or get someone to do it for you. Let me know if you need help. This isn't hard to fix, but it can be tedious.
The other issue is apparently a PHP vulnerability, recently fixed by Pair. The combination led to an explosion of the earlier exploit. I'm taking care of the files, and hopefully if you've been visiting and seeing the warning pages pop up, you shouldn't see them for long. Sorry for the problems.