Following is a link to check sites impacted by the Heartbeat bug. This may be one of if not the greatest security breaches. Please check the referenced sites – if they recommend you change passwords to THAT site do so without delay.
Just now I received the CNET page monitoring the problem and it has more sites listed but less info check both references’
CNET site: http://www.cnet.com/how-to/which-sites-have-patched-the-heartbleed-bug/?tag=nl.e404&s_cid=e404&ttag=e404&ftag=CAD1acfa04
I checked that site and changed my passwords for Yahoo, Google, and Facebook.
You might want to do the same.