ISIS supporters threaten Twitter founder Jack Dorsey

Posted at 9:41 AM, Mar 02, 2015
and last updated 2015-03-02 09:41:37-05

NEW YORK (CNNMoney) — Self-identified ISIS supporters have made online threats against Twitter founder Jack Dorsey and other Twitter employees for shutting down accounts that promote ISIS.

In a post on anonymous forum, the group drew an illustration of Dorsey in cross hairs. The Arabic message that follows contains several death threats.

“How would you protect your miserable employees Jack, when their necks become an official target to ISIS soldiers and supporters, what would you tell their families and their sons, and you are the one who involved them in this lost war,” the group said in its post.

Twitter’s terms of service forbid hate speech, threats and posts that promote terrorism. The social media site has actively tried to take down accounts tied to ISIS, particularly after Anonymous hacktivists took it upon themselves to block access to terrorist websites and social media profiles.

“You started this lost war; we told you from the beginning that it’s not your war but you didn’t understand and closed down our accounts — we’ll come back, but when our lone lions silence your breath, you won’t come back,” the post says.

Twitter said it is working to confirm whether the threats are serious.

“Our security team is investigating the veracity of these threats with relevant law enforcement officials,” a spokesman for Twitter said.

— By David Goldman (CNN’s Yousuf Basil and Samuel Burke contributed to this report)