Twitter Counter, a third-party analytics service, appears once again to have provided a gateway for hackers to post messages to high-profile Twitter accounts.
The hackers posting in Turkish started send message with Nazi swastikas on those accounts..
Among those posting the message were the Twitter accounts of Forbes magazine, the Atlanta Police Department, and Amnesty International.
Twitter identified a third-party app as being to blame but did not disclose the app.
Twitter Counter service outed itself on Twitter.
“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”
Later the service tweeted
https://twitter.com/thecounter/status/841941624238284800
A few hours later Twitter Counter said the following
The Twitter Counter application is blocked on Twitter. If this activity continues, then we strongly believe it's not just through us.
— TheCounter (@thecounter) March 15, 2017
