article_snippet: Pro-ISIS hackers have never been responsible for a major cyber breach but some experts worry some experts capabilities are growing.
article_snippet: J.M. Berger, co-author of "ISIS: the State of Terror," told CNN,  "There are indications some former members of Anonymous and TeaMp0isoN (another hacking group) are now hacking on behalf of ISIS.
article_snippet: The large majority of those within such hacking collectives are thought to hold very different views.
article_snippet: In the wake of the attack against the Charlie Hebdo satirical magazine in Paris in January, hackers affiliated with Anonymous declared online war on ISIS and al Qaeda.