According the the security agencies Junaid Hussain is a British hacker believed to be working for ISIS, and Mohamed Abdullahi Hassan, an American recruited by the Somali terror gang al-Shabaab in 2008. Simpson had asked his Twitter followers to follow Junaid Hussain in one of his final Tweets before launching the attack in Texas and Hussain congratulated Simpson after the attack, according to security agencies. Hussain’s hacking group, CyberCaliphate had hacked into the U.S. Central Command’s Twitter account, @CENTCOM in month of January, 2015. After taking over the Centcom account, CyberCaliphate had fired random tweets and leaked information about the US military personnel deployment.
