There are still other jihadi forums left online which enable “the rabble” to communicate with others, but so far not a single one of them are fully trusted by al-Qaida. Kohlmann is definitely an authority in the area as he has spent more than a decade of his life tracking al-Qaida and other terrorist organizations.
There is a list of potential suspects who might actually be responsible behind this attack, comprising of government-sponsored hackers from the U.S. and the U.K., in addition to independent cyber vigilantes. Among the frequent hacktivists who might have been involved is th3j35t3r, a self-described “Hacktivist for good. Obstructing the lines of communication for terrorists, sympathizers, fixers, facilitators, and other general bad guys”.