- "...governments are targeting them in a shadowy new front in the "war on terror"
- "...the websites have fallen victim to Shia groups engaged in tit-for-tat sectarian cyber warfare with Sunnis"
- "technical problems"
- "...al-Qaida sympathisers closed the forums themselves because they were too good a source of intelligence for their enemies"
- "[I]nternet vigilantes"
Cyber-attack theory as al-Qaida websites close