Hamilton County Sheriff’s Office
April 14, 2025
•[ ransomware, data leak ]
Ransomware attack by the Qilin group encrypted internal systems and took the Hamilton County (Tennessee) Sheriffs Office website offline; attackers demanded $300,000 and claimed data theft, but no exfiltration has been verified; systems fully restored by early May 2025.
MacKay Memorial Hospital
February 6, 2025
•[ ransomware, data leak ]
Ransomware attack by Chinese actor CrazyHunter encrypted hospital systems and exfiltrated 32.5 GB of patient data; over 500 computers crashed, disrupting clinical services for several days; attacker linked to other Taiwanese targets.
SK Group (SK Inc.)
April 10, 2025
•[ ransomware, data leak ]
Qilin listed sk.com on its leak site on April 10 2025, claiming it stole approximately 1 TB of SK Group corporate data. SK has not publicly confirmed the breach or the claimed data volume, and no encryption or operational disruption has been reported.
Sensata Technologies
March 28, 2025
•[ ransomware, data leak ]
A ransomware attack between March 28 and April 6 2025 disrupted Sensata Technologies manufacturing, shipping, and support operations worldwide. The company confirmed that threat actors viewed and obtained internal files containing employee and personal data, including names, addresses, Social Security numbers, and financial and health information. Regulatory filings indicate at least 362 affected individuals (Maine AG notice). No ransomware group has claimed responsibility.
WK Kellogg Company
December 7, 2024
•[ ransomware, data leak ]
WK Kellogg Company filed a data breach notification with the Maine Attorney General on April 7 2025 after discovering unauthorized access to its systems on December 7 2024. According to the company and BleepingComputer, threat actors affiliated with the Cl0p ransomware group exploited a MOVEit Transfer vulnerability to exfiltrate employee data containing names and Social Security numbers. No evidence of encryption or operational disruption was reported.
Everest Ransomware Leak Site
April 6, 2025
•[ ransomware, website defacement, hacktivism ]
The Everest ransomware groups dark web leak site was defaced on April 6 2025 by an unidentified anti-ransomware actor who replaced its content with the message Dont do crime. CRIME IS BAD. xoxo from Prague. Following the defacement, the Everest operators took the site offline. No data theft or encryption occurred.
Pacific Residential Mortgage
February 10, 2025
•[ ransomware, data leak ]
Pacres reported ransomware that locked systems and exposed consumer information.
National Faster Payments System (Sbp)
March 26, 2025
•[ ransomware, denial of service ]
A large-scale hacker attack has hit Lukoil and its Faster Payment System. Users are complaining that they can't transfer money, and Lukoil employees have been unable to access their work computers since early morning.
Berkeley Research Group
March 1, 2025
•[ ransomware, data leak ]
BRG suffered a ransomware intrusion detected in March 2025 that led to data theft and encryption activity. Subsequent disclosures and DOJ statements indicate exposure of sensitive information relating to survivors involved in multiple Catholic diocesan bankruptcy cases; the firm engaged external responders and notified affected parties.
Raymond Lifestyle Ltd
February 20, 2025
•[ ransomware ]
Raymond reported a cybersecurity incident on Feb 20, 2025 that impacted some IT assets. In its Q4 FY25 results on May 13, the firm cited the ransomware attack and weak demand as factors weighing on total income and profit, indicating a disruptive event without confirmed exfiltration details.
City of Sheboygan
October 31, 2024
•[ ransomware, data leak ]
67,000+ residents PII including SSNs, state IDs, license plate numbers were accessed during an Oct 31, 2024 ransomware incident; breach letters filed May 2025.
Biopharma Company, Hinjewadi (Pune)
April 27, 2025
•[ ransomware, data leak ]
A ransomware attack discovered on April 27 2025 disrupted a biopharmaceutical company in Hinjewadi (Pune) after an unknown actor accessed internal servers, exfiltrated and encrypted data, and demanded USD 80,000 for decryption; the incident affected 15 on-premises research systems and is under investigation by Pune Cyber Cell.
Doctors Hospital Cayman Islands
April 28, 2025
•[ ransomware ]
On April 28 2025, Doctors Hospital in the Cayman Islands contained a ransomware incident that encrypted portions of its administrative IT environment. The hospital reported that its patient-record platform, hosted on a separate proprietary system, was unaffected. Operations continued with minimal disruption, and no evidence of data exfiltration was found.
Intendencia de Paysandú
July 24, 2024
•[ ransomware ]
On July 24 2024, the Paysand Department (Uruguay) suffered a ransomware attack that encrypted all servers and backups, paralyzing municipal operations for several days. Hackers demanded about USD 650 000 in bitcoin; AGESICs forensic investigation confirmed no evidence of data exfiltration or intellectual-property theft.
Uncle Henry’s
March 11, 2025
•[ ransomware, data breach ]
On March 11 2025, Maine-based classified ads publisher Uncle Henrys suffered a ransomware-style attack that deleted its primary website database and took the site offline until April 15. Attackers demanded Bitcoin. Management stated only a few advertisement entries were copied and no personal data compromise was confirmed.
Epicentr K
April 28, 2025
•[ ransomware ]
On April 28 2025, Ukraines largest home improvement retailer Epicentr K suffered a ransomware attack that fully encrypted servers and back-office systems, taking down cash registers, accounting, and logistics across its nationwide network. Operations were halted for at least 24 hours before gradual restoration began. No data theft has been confirmed, and the attacker remains unidentified.
Bell Ambulance
February 13, 2025
•[ ransomware, data leak, healthcare ]
Bell Ambulance detected a network intrusion on Feb 13, 2025. Medusa ransomware claimed responsibility and data theft; HHS/state filings list ~114,000 impacted.
DuPage County Government (Justice Systems)
April 1, 2025
•[ ransomware, data leak ]
Cyberattack on DuPage County, Illinois in early April 2025 encrypted servers supporting court, probation, and clerk operations, forcing justice-system portals offline for several days. Officials confirmed encryption but found no evidence of data theft or leak as of April 10 2025.
Oregon Department of Environmental Quality (DEQ)
April 1, 2025
•[ ransomware, data leak ]
On April 1 2025, the Oregon Department of Environmental Quality experienced a ransomware attack attributed to the Rhysida group. The incident encrypted internal servers and disabled key systems, including statewide vehicle inspection services, email, web portals, and internal databases. Rhysida claimed to have exfiltrated over 1 million files and demanded a $2.5 million ransom, though DEQ has not confirmed data theft.
Hitachi Vantara
April 26, 2025
•[ ransomware, data leak ]
Akira ransomware infiltrated Hitachi Vantaras internal network, stealing corporate data and encrypting parts of its IT environment, prompting incident response and system restoration efforts.
