On January 5, 2016, the ISIS-affiliated Caliphate Cyber Army posted a message on its Telegram channel promoting an upcoming operation, which they promised would be a “heavy caliber surprise.”
The message reads:
“In Sha Allah
“Our message to the whole world we are preparing for a new operation the first of its kind and a heavy caliber surprise.
Source: Caliphate Cyber Army Telegram channel, January 5, 2016.