Tumblr is a technology platform tracked across 2 threat clusters and 2 intelligence report mentions on ThreatCluster. First observed February 25, 2026; most recent activity June 3, 2026.
Yahoo has disclosed a massive data breach affecting more than one billion user accounts, which occurred in August 2013. This breach is separate from a previously reported incident in 2014 that compromised 500 million…
OpenAI reported that a user linked to Chinese law enforcement attempted to use ChatGPT to orchestrate smear campaigns against critics of the Chinese Communist Party, including Japan's Prime Minister Sanae Takaichi. The…