DDoS Attacks Cause Major Threema Outages
Sustained distributed denial-of-service attacks knocked Swiss secure messenger Threema offline for hours before upstream filtering restored service; On-Prem users unaffected.
Threema suffered a series of large-scale DDoS attacks that left its Swiss secure messaging service unavailable for about four hours Tuesday evening, with intermittent outages into Wednesday morning until restoration at 12:23 p.m. CEST. Attacks also targeted colocation partner Nine and kept changing patterns, complicating mitigation. Threema deployed additional upstream DDoS protection on August 14 and plans status page improvements; Threema On-Prem customers running their own infrastructure were unaffected.
- Service down roughly four hours Tuesday evening; intermittent disruptions Wednesday.
- Attack patterns constantly changed, making mitigation a cat-and-mouse exercise.
- Colocation partner Nine was also targeted; On-Prem deployments unaffected.
- Upstream DDoS filtering added August 14; status page gains incident history and RSS feed.
- Victims
- Threema
- Countries
- Switzerland
From the original article
2 min read at securityaffairs.com
Large DDoS attacks disrupted Threema, causing severe communication outages. Threema On-Prem users were unaffected by the attacks. Threema suffered multiple large-scale DDoS attacks that disrupted its secure messaging service and caused severe communication issues.
By @securityaffairs · securityaffairs.com
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