A bad flaw in some widely used code has made ssl not so secure. It's been in use for the last two years, so prudence dictates changing passwords on any secure sites you use once they get new certificates. It would also be best to avoid online banking, or any other sensitive activity, unless absolutely necessary. Read about it here...
http://arstechnica.com/security/2014...-before-patch/
http://arstechnica.com/security/2014...-before-patch/