Latest cybersecurity reporting from selected sources.

Fake emails already doing the rounds as ransomware crew boasts about what it allegedly stole UK enterprise software consultancy The Adaptavist Group is investigating a security breach after an intruder logged in with stolen credentials, while a ransomware crew claims it grabbed far more than the company is currently admitting.…

Lawsuit Claims SonicWall Cloud Backup Flaw Led to Ransomware Attack Against MarquisMarquis Software Solutions has sued SonicWall alleging a cloud backup data breach exposed firewall configuration files, including credentials and multifactor authentication scratch codes. The firm says the breach enabled an August 2025 ransomware attack and triggered dozens of class action lawsuits.

Researchers See 'Acceleration' in Existing Threats, Ongoing Criminal SuccessCybercrime so far this year can be summarized as featuring "more of everything," with researchers tracking increases in the number of ransomware and data breach victims, credentials stolen by infostealers, and new vulnerability disclosures with exploits coming to light.

A 3AM ransomware affiliate is conducting highly targeted attacks using email bombing and spoofed IT support calls to socially engineer employees into giving credentials for remote access to corporate systems. [...]

Threat actors have been distributing trojanized versions of the KeePass password manager for at least eight months to install Cobalt Strike beacons, steal credentials, and ultimately, deploy ransomware on the breached network. [...]

It wasn't ransomware headlines or zero-day exploits that stood out most in this year's Verizon 2025 Data Breach Investigations Report (DBIR) — it was what fueled them. Quietly, yet consistently, two underlying factors played a role in some of the worst breaches: third-party exposure and machine credential abuse

Also: The US Supreme Court; Polyfill; BEC Compromise for Frozen ChickenThis week, cyber insurance policies fell short, the Supreme Court rejected efforts to fight disinformation, Polyfill apparently was hijacked, cybercriminals stole chicken, Levi warned of a credential stuffing attack, hackers targeted Android devices, and a lab in South Africa was hit by ransomware.

A new ransomware operation named 'Fog' launched in early May 2024, using compromised VPN credentials to breach the networks of educational organizations in the U.S. [...]

Also: Another Ivanti Zero-Day? And FBI Calls for Strengthening DMARC PoliciesThis week, REvil hacker sentenced; ZDI saw possible Ivanti-zero-day; FBI said to strengthen DMARC policies; Okta saw surge in credential stuffing attacks; French hospital refused to pay ransom; JPMorgan, debt collection agency and healthcare company were breached; and ex-NSA employee was sentenced.

UnitedHealth confirms that Change Healthcare's network was breached by the BlackCat ransomware gang, who used stolen credentials to log into the company's Citrix remote access service, which did not have multi-factor authentication enabled. [...]

The breach of LA Unified School District (LAUSD) highlights the prevalence of password vulnerabilities, as criminal hackers continue to use breached credentials in increasingly frequent ransomware attacks on education

Analysis shows attackers breached employee credentials with voice phishing and were preparing a ransomware attack against Cisco Systems.