"Due to the increasing efforts of social media websites to close ISIS-related accounts, it was estimated that global jihad activists would seek refuge in the dark web," Ido Wulkan, a Tel Aviv-based senior analyst at Singaporean cyberintelligence company S2T, was quoted as saying by Haaretz.
The dark web consists of private networks where content is hidden from standard search engines and connections can only be made between trusted peers.
"Donations may be made through various means both monetary and physical… though anything besides economic support through Bitcoin must be approved by the board and taken with much caution due to the security apparatus' recent crackdown on any and all Islamic change fronts here in the United States," Abu-Mustafa allegedly wrote.
The user's account is said to have been shut down by the FBI.
The IS is a radical Sunni group that controls large territories in Iraq and Syria. It is infamous for its online propaganda, which includes video postings and social media interaction to attract funding, recruit future IS members as well as to threaten its opponents.
