Threema Messaging Service Hit by DDoS Attacks Causing Outages

Threema, a secure messaging service, experienced outages due to DDoS attacks targeting a third-party service provider. The disruptions began on Tuesday, rendering the messenger unusable for several hours, and continued into Wednesday. No specific technical details, such as attack vectors or traffic volumes, were disclosed. The incident affected Threema’s availability but did not mention data breaches or compromised user information. The attacks were ongoing at the time of reporting, with no attribution to a threat actor.