A number of Twit­ter accounts promoting the Islamic State terrorist group are col­lab­o­rat­ing with anti-Israel hack­ers in an effort to increase cyber attacks on behalf of the terror organization, the Anti-Defamation League reported on Thursday.

The Alazm Cen­ter Twit­ter account posted a message on Jan. 13 asking hack­ers to con­tact them. Since then, a group of anti-Israel hack­ers called “Ter­ror­ists Team for Elec­tronic Jihad” has claimed respon­si­bil­ity for sev­eral attacks against Israeli web­sites in the name of the Islamic State.

The hackers said they breached the web­site of a secu­rity con­trac­tor in Israel, a tour orga­nizer and other Israeli busi­nesses, according to ADL. Vis­i­tors are redirected to web­sites fea­tur­ing the name and flag of the Islamic State, along with the sig­na­ture of the hacking group.

“Ter­ror­ists Team for Elec­tronic Jihad” declared their allegiance to the Islamic State in a video posted on YouTube on Nov. 29, 2014, ADL noted. They also have a Face­book page and a Twit­ter account that include mes­sages in sup­port of Islamic State terrorists.

The group of hackers declared respon­si­bil­ity for the anti-Israel attacks in a state­ment posted on JustPaste.it, a file-shar­ing website the Islamic State uses to anonymously pub­lish its own state­ments.

The message said, “Thanks to God, below is today’s sum­mary of hack­ing web­sites which is part of a cam­paign against Zion­ist web­sites” and included a list of indi­vid­ual hack­ers affil­i­ated with the group. Sev­eral of the hackers took part in other cyber attacks against Israeli web­sites on behalf of groups in North Africa, according to ADL.

Videos of the hackings were posted on Aljyyosh, an online forum for Arab hack­ers claiming respon­si­bil­ity for steal­ing per­sonal infor­ma­tion from Amer­i­can Jews and Israelis.

The Islamic State Twit­ter account @Mo7_AbuAzzamNM, which describes itself as the “Hacker of the Caliphate State,” posts messages prais­ing the hack­ing of “Zion­ist web­sites.”

“Amer­ica has drones, but we have cyber expe­ri­ence,”  @Mo7_AbuAzzamNM tweeted on Jan. 16. “Oh mule of the Jews [Obama], the com­ing days will show you.”

AnonG­host, another hacker group that tar­gets Jew­ish and Israeli web­sites, is also promoting the Islamic State and its propaganda. The Twit­ter account of Mau­ri­ta­nia Attacker, the pre­sumed leader of AnonG­host, posted sev­eral messages recently related to cyber attacks on behalf of the terrorist group. The account then shared a video that explained to Islamic State terrorists how to avoid being mon­i­tored by the CIA.