An email went out to Buffer customers at about 4pm ET today informing customers that Buffer, the popular Twitter scheduling service, was hacked:

I wanted to get in touch to apologize for the awful experience we’ve caused many of you on your weekend. Buffer was hacked around 1 hour ago, and many of you may have experienced spam posts sent from you via Buffer. I can only understand how angry and disappointed you must be right now.

Not everyone who has signed up for Buffer has been affected, but you may want to check on your accounts. We’re working hard to fix this problem right now and we’re expecting to have everything back to normal shortly.

This banner was added to the Buffer home page:

Sorry – Buffer was hacked and some scam posts were sent. We’re working hard to investigate. Stay updated via Twitter (@buffer).

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