Hacker group Anonymous appears to have singled out its next target – the controvesial anti-gay Westboro Baptist Church in the US.
An open letter, purporting to be from Anonymous, accused the church of bigotry and fanaticism.
It warned that Westboro’s websites would be attacked if the congregation did not stop its public protests.
In a defiant response, the church said it would not be silenced, and urged Anonymous to “bring it”.
Westboro Baptist Church has been widely condemned for its aggressive anti-gay campaigning.
A number of US states have passed legislation, banning Westboro’s members from protesting close to military funerals.
The church’s leader, pastor Fred Phelps, was banned from entering the UK by the Home Office in 2009.