I recently recieved a friend request on Facebook from a person called "Rob Garrett" who claimed to be a programmer for Riot Games. He then told me he could help me get free skins and I said how (still thinking he was a Riot employee). He then asked me for my USERNAME, PASSWORD, SERVER AND SUMMONER NAME.
*THANKYOU RIOT FOR CONTINUOUSLY REMINDING THAT "RIOT EMPLOYEES WILL NEVER ASK FOR YOUR PASSWORD WHEN ASSISSTING YOU"*
He also claimed to be HotShotGG, Chaox, and Dyrus. I said to him they were not Riot employees but pro players or featured streamline people. He then deleted his account!
I suspect he is after peoples credit card details.
BEWARE! DO NOT GIVE ANYONE YOUR ACCOUNT INFORMATION! And don't accept people who claim similar things on Facebook!