http://blog.erratasec.com/2014/04/no-we-werent-scanning-for-...
http://blog.erratasec.com/2014/04/no-we-werent-scanning-for-...
https://www.eff.org/deeplinks/2014/04/wild-heart-were-intell...
At this point I'd just assume the worst, and change all the passwords, keys and sessions.
>We haven't observed this during Jan, Feb and first half of March.
and masscan has been available for 6 months,
and masscan is widely used across the global internet,
then a log going back to January SHOULD have masscan false positives in them before March.
It seems like:
* Either Robert Graham is wrong that masscan can create these log entries (unlikely)
* masscan isn't used widely enough to ambiently generate errors since its release (maybe)
* This operator managed somehow to truncate or alter their log configuration (maybe)
* Some other heretofore unknown TLS scanning tool generates a different false positive (maybe)
* Some heretofore unknown entity knew about Heartbleed and scanned the Internet for it (maybe)
The evil unknown heartbleeder isn't the most likely scenario in this list.
Sounds like they may have scanned the whole internet themselves.
Google reissued their cert on 12 Mar. I assume that is when they discovered it?