Latest cybersecurity reporting from selected sources.

The Oncology Institute disclosed a data breach tied to a third-party vendor, potentially exposing patient information after a 2025 cyberattack. The Oncology Institute has confirmed that patient information was impacted in a cybersecurity incident involving a third-party software provider. The healthcare network first disclosed the security breach in November 2025 while the vendor’s investigation was […]

Inotiv Tells SEC 'It's Still Evaluating Full Impact and Notifying Breach Victims'Drug research firm Inotiv in a filing with federal regulators said it is still evaluating the financial and operational impact of an August cyberattack that's linked to ransomware gang Qilin. The company is also notifying nearly 10,000 people whose data was allegedly stolen in the incident.

Asahi Group Holdings, Japan's largest beer producer, has finished the investigation into the September cyberattack and found that the incident has impacted up to 1.9 million individuals. [...]

Nation-State Actor Suspected in Breach of Congressional Budget OfficeThe Congressional Budget Office has been the subject of an apparent cyber incident, officials confirmed Friday, raising concerns that adversaries may have gained access to sensitive data used to inform U.S. legislative decisions amid ongoing federal cyber staffing shortages.

The U.S. Congressional Budget Office (CBO) confirms it suffered a cybersecurity incident after a suspected foreign hacker breached its network, potentially exposing sensitive data. [...]

Also: DSLRoot Turns Homes Into Proxies, Cyberattack Disrupts Swedish TownsThis week: TransUnion incident affects 4.5 million, DSLRoot residential proxies, Operation Serengeti 2.0, ZipLine campaign exploits contact forms, a cyberattack disrupts 200 Swedish municipalities, Maryland Transit Administration hit by ransomware, TAG-144 escalated attacks in South America.

US Cyber Defense Agency Deploys Support to Nevada Following Ransomware IncidentThe Cybersecurity and Infrastructure Security Agency and FBI are aiding Nevada after a cyberattack disabled state services, exposing how local governments - amid surging ransomware, IT shortfalls and federal funding cuts - are increasingly reliant on strained national cyber defense resources.

Nova Scotia Power confirms it suffered a data breach after threat actors stole sensitive customer data in a cybersecurity incident discovered last month. [...]

House of Dior, the French luxury fashion brand commonly referred to as Dior, has disclosed a cybersecurity incident that has exposed customer information. [...]

Treasury Tells Lawmakers Chinese Threat Actor Remotely Breached Agency WorkstationsThe U.S. Treasury Department notified lawmakers Friday that the agency was the victim of a major cyberattack in which Chinese-linked hackers gained access to unclassified documents after gaining access to remote workstations through a third-party software provider, BeyondTrust.

Experts Advise Health Sector to Take Steps as UnitedHealth Group Cleans Up MessUnitedHealth Group's admission that information for "a substantial portion" of the American population was compromised in its Change Healthcare cyberattack sets into motion the likelihood the incident will become the largest health data breach ever reported in U.S. What other details are emerging?

Nearly 342,000 Affected; Health Data Incident Isn't Covered by HIPAA RulesA cyberattack on a Boston-based consulting firm that provides litigation support services to the U.S. Department of Justice in its investigations has potentially compromised Medicare numbers and other health insurance and medical information of nearly 342,000 individuals.

The International Monetary Fund (IMF) disclosed a cyber incident on Friday after unknown attackers breached 11 IMF email accounts earlier this year. [...]