While most Americans were winding up their holiday weekends last Monday, the phones at the Vancouver headquarters of HootSuite, a social media management company, began to ring.

Burger King’s Twitter account was hacked last Monday.

Burger King’s Twitter account had just been hacked. The company’s logo had been replaced by a McDonald’s logo, and rogue announcements began to appear. One was that Burger King had been sold to a competitor; other posts were unprintable….

via Twitter Hacks Force Companies to Confront Security on Social Media – NYTimes.com.