Government Data Breaches — Page 5

A data breach affecting suffolkva.us was reported in February 2026, though official confirmation and details remain unclear.

The City of Cocoa experienced a data breach in February 2026, stemming from a ransomware attack claimed by the Inc group, which disrupted IT systems and led to unconfirmed data exfiltration.

The Warren County Sheriff's Office experienced a data breach in February 2026, discovered after a ransomware attack by RansomHouse.

The Cheyenne & Arapaho Tribes experienced a ransomware attack in late 2025 that disrupted IT systems, but the tribe has stated no data loss has been confirmed as of February 2026.

The City of Peabody, MA experienced a data breach in 2025 where unauthorized access to its systems led to the exposure of personal information. The city began notifying affected individuals in February 2026.

The "Operation Endgame" data breach in November 2025 involved various cybercrime enablers and resulted in the exposure of 2 million email addresses and 7.4 million passwords. However, this was a law enforcement operation, and no personal data exposure from affected individuals has been reported by the operation itself, only data provided to HIBP by authorities about affected credentials previously stolen by criminals.

No data breach involving the Housing Authority of the City of Vancouver occurred in 2025; security upgrades were implemented instead.

Kootenai County, Idaho experienced a ransomware data breach in March 2026, leading to the exposure of personal and sensitive information for an undisclosed number of individuals.

The City of Puyallup data breach in November 2025 involved 2,620 individuals and stemmed from a ransomware attack on the CodeRED system, a third-party vendor.

A data incident involving Medicare.gov accounts operated by the Centers for Medicare & Medicaid Services (CMS) may have impacted approximately 103,000 Medicare beneficiaries, not Aetna, with notifications sent in 2023 or 2024.

A dark web post in October 2024 alleged a data leak from the California Secretary of State Records, claiming sensitive information was compromised.

The City of Richland, Washington, reported a data breach in 2024 to the Washington State Attorney General. The affected count and compromised data types have not been established from the accessible notice text.

The City of Long Beach, CA experienced a data breach on November 14, 2023, according to a California Attorney General data breach listing. The affected count and specific data types have not been disclosed in the available source.

The Washington Department of Social and Health Services (DSHS) experienced an internal data breach in 2023, affecting approximately 8,600 individuals.