TheCounter: "We're aware that our service was hacked and have started an investigation into the matter.We've already taken measures to contain such abuse"
https://twitter.com/thecounter/status/841935867925139458
"This isn't TwitterCounter's first time. It's happened before. If you rely on it, it's time to pick better tools."
https://twitter.com/FR314/status/841925814417555460
http://press.twittercounter.com/139716-twitter-counter-accou...
UPD TheCounter: "Assuming this abuse is indeed done using our system, we’ve blocked all ability to post tweets and changed our Twitter app key."