Frustrated by social networks’ efforts to keep them at bay, the terrorist group ISIS has made a direct threat against the CEOs of both Facebooka> and Twitter.

In a 25-minute video dubbed “Flames of the Supporters” and posted on the Russian-based instant messaging service Telegram, the Sons Caliphate Army displayed photos of Facebook co-founder and CEO Mark Zuckerberg and Twitter CEO Jack Dorsey with digitally added bullet holes. Sons Caliphate Army is a purported hacking division of the Islamic State.

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