The Izz Al-Din Al-Qassam Brigades, which is the military wing of Hamas and a U.S.-designated terrorist organization, uses WhatsApp to communicate with its supporters. The group's homepage has a button that gives the group's WhatsApp number.
The Izz Al-Din Al-Qassam Brigades' homepage has a button that gives the group's WhatsApp number.
On April 14, 2018, one of the group's official Twitter accounts (@qassam_arabic12) tweeted the image below. The image explains that the group uses WhatsApp and that those interested can text the word "subscribe" to the number given, indicating that the Izz Al-Din Al-Qassam Brigades may have a WhatsApp group.