In the last 24 hours or so, a topic named the "Heartbleed Bug" had been trending on all major social media and all manner of hacking websites.
Basically, it is an encryption flaw that affects "secured" traffic across multiple platforms.
Google had came out to clarify that their system is invulnerable to this bug but it will not hurt to change your password "just-in-case".
Best regard,
ITD