The list of the websites is appended at Ghostbin with a message from GhostSec a member of the Anonymous legion. Soon after the release of the list of the pro ISIS websites Anonymous started targeting them and downed most of them https://twitter.com/GhostSecurity_/status/584549897925484544

— Terrormonitor.org (@Terror_Monitor) April 5, 2015 https://twitter.com/GhostSecurity_/status/584585001381027840 Another member of Anonymous legion has released a list of 14000 Twitter IDs to pressurize Twitter to ban such accounts. https://twitter.com/Anonymous5thNov/status/584609201999093760 The list was released under the operation #OpISIS campaign which was launched by Anonymous earlier this year after the gruesome killings at Charlie Hebdo office in Paris. The Anonymous have so far successfully brought down many websites stating affiliation to the ISIS or IS and released Twitter, email VPN account details belonging to them.