18 Aug, 2026

Large-scale DDoS attacks disrupted Threema secure messaging service

Multiple distributed denial-of-service (DDoS) attacks targeted the Threema secure messaging service earlier this week, causing severe disruptions to communications. ​Organizations using Threema On-Prem did not experience any issues because they rely on their own infrastructure. In a post-mortem report on Friday, the end-to-end encrypted instant messaging service said that the attacks were difficult to defend […]

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