Okay.. you might of heard on the internet or news about the Heartbleed bug.
Info here.

So basically...
Tumblr is advising everybody to change their passwords for things like email, banking, etc.
I HIGHLY ADVISE YOU DO THE SAME.................

Hackers can send disguised signals and get secret information so change your important passwords
I have changed every password I have (except for planetmc because it's not THAT important as other stuff)

For your passwords.. Don't use anything that's secure such as an address or something like that..
Hackers can find out information about you if you do this.
If they get your credit card number (this happened to me before) they can buy random crap and you will be charged.
(i didn't get charged for my stolen # because i told them it was a fraud)

Mojang AB has advised everybody to change their passwords for all Mojang games.