By now you should have all heard about the Heartbleed flaw:
Here’s everything you need to know about the Heartbleed web security flaw — Tech News and Analysis
I just spoke to the Live content team and they are working on creating an application rule to detect Heartbleed activity. Hopefully it will be available in the next 24 hours.
We are testing both an app rule for identifying vulnerable servers and a parser for detecting the 64K leak associated with Heartbleed.