The evidence that accounts were being hacked remained anecdotal. Facebook's security team couldn't prove something was wrong in the data. It wasn't until after the new year that the shocking truth emerged: Ammar was in the process of stealing an entire country's worth of passwords. [...] Sullivan's team rapidly coded a two-step response to the problem. First, all Tunisian requests for Facebook were routed to an https server. [...] The second technical solution they implemented was a "roadblock" for anyone who had logged out and then back in during the time when the malicious code was running. Like Facebook's version of a "mother's maiden name" question to get access to your old password, it asks you to identify your friends in photos to complete an account login.
It's going to be released as a dvd with extras, etc, in full def..
[citation needed]
[watch the video]
Numeric stability is probably not all that important when you're guessing.