International overview 2026: Key cyber news of week 21

Patient data was leaked from several German university hospitals following an attack against service provider Unimed. An international police operation dismantled First-VPN, a service popular among criminals, and arrested its administrator. Ukraine’s CERT warned of a phishing campaign targeting government officials that uses PDF files associated with the Prometheus learning platform and delivers malware. In the Netherlands, two people linked to a web-hosting company were arrested and 800 servers were seized over suspected support for cyberattacks and information operations.