Over the next few days, web site administrators will be patching a newly found bug (known as “Heartbleed”) that may have allowed your password and other private information to be compromised.
Give them a few more days to finish patching, and then change all of your online passwords (banking, shopping, email too – Yahoo is effected, for one). Better safe than sorry.
For more details, below is a link to the article in the NY Times.