L’hebdo cybersécurité (22 octobre 2023)

Russian Sandworm hackers breached 11 Ukrainian telcos since May

The state-sponsored Russian hacking group tracked as ‘Sandworm’ has compromised eleven telecommunication service providers in Ukraine between May and September 2023.

FBI warns of extortion groups targeting plastic surgery offices

The FBI warned of cybercriminals using spoofed emails and phone numbers to target plastic surgery offices across the United States for extortion in phishing attacks that spread malware.

North Korean hackers exploit critical TeamCity flaw to breach networks

Microsoft says that the North Korean Lazarus and Andariel hacking groups are exploiting the CVE-2023-42793 flaw in TeamCity servers to deploy backdoor malware, likely to conduct software supply chain attacks.

Ukrainian activists hack Trigona ransomware gang, wipe servers

A group of cyber activists under the Ukrainian Cyber Alliance banner has hacked the servers of the Trigona ransomware gang and wiped them clean after copying all the information available.