Also, this vulnerability affects many other protocols routed over TCP (such as SMTP over TLS)

And when you check online your account balance tonight, think that someone may be eavesdropping >:)

Bluetooth of most cell phones is off by default;
The sender needs the receiver to pair before sending any data – this is a feature of Bluetooth protocol;
The connection is unstable;
Mobile platform is highly heterogeneous;…

That’s why there is not so many viruses on your cell phone.

Needless to say, this isn’t normally something you’d consider when doing a threat analysis on the presidency’s web site. On the other hand, in Egypt I’ll bet fewer people depend on those web sites being up and available.

(Thought experiment: if whitehouse.gov was down for a month, would that really be a catastrophe, or just more of an embarrassment to the commander in chief?)

The broad problem of “usable security” is really in its infancy. I’ve done some work on this, in the context of electronic voting, so I’ve begun to appreciate just how hard it is to design something to be secure in the hands of users who don’t necessary know or care to do things “properly.”