Lots of windows updates have been issued so you likely have either done those are will be very soon hopefully.
But also critical updates for Flash on all browsers, that means if you have firefox you must go with your firefox browser and get the flash update for the NON IE flash then restart the browser, you also must go with IE to get the update for IE and update it also, any browsers you have on the pc must be updated individually with that browser.
Be sure to watch carefully so you uncheck any extras that may appear like toolbars, browsers etc, you don't want those just the update.
Other adobe items need updating also including Air and shockwave.
I will link to Corrine's blog where you will find all the links you need to do these updates.
Remember these are critical security updates!
Another Critical Adobe Update, Includes Flash Player, AIR and Shockwave
and the windows updates info
Microsoft Security Bulletin Release for February 2013