You can’t have missed the coverage of the Heartbleed exploit which potentially effects 17% of the internet.
Bruce Schneier describes the impact as:
“Catastrophic” is the right word. On the scale of 1 to 10, this is an 11.
Randall Munroe of XKCD does a fantastic job explaining in layman’s terms what the bug actually is – something that the security community (as usual) has struggled with.
You can use Filippo Valsorda’s handy tool to see if a site is potentially vulnerable (Broadsheet’s server uses a version of OpenSSL that is not vulnerable to this particular attack).
Threat from Heartbleed grows as flaw found in some routers (Irish Times)