Juan F. Luis Hospital
April 26, 2025
•[ ransomware, vulnerability ]
Ransomware accessed two local servers via an overlooked vulnerability and forced the hospital into prolonged downtime, manual workflows, and a wholesale technology rebuild. CEO reports weekly cash flow impact of $750k$800k due to delayed electronic billing yet maintains no patient or staff data was stolen; operations gradually restored as systems returned.
Kintetsu World Express
April 23, 2025
•[ ransomware ]
Ransomware attack discovered April 23 2025 disrupted logistics processing across multiple global offices of Kintetsu World Express; several servers and workstations were encrypted, delaying shipments and customs documentation; no data theft confirmed.
Aigües de Mataró
April 21, 2025
•[ ransomware, encryption, service disruption ]
Ransomware encrypted Aiges de Matars corporate servers on April 21 2025, taking the website offline and delaying customer services. The utility reported no evidence of data exfiltration; water service and quality remained unaffected. No actor has claimed responsibility.
Aigües de Mataró
April 21, 2025
•[ ransomware ]
Ransomware encrypted Aiges de Matars corporate servers on April 21 2025, taking the website offline and delaying customer services. The utility reported no evidence of data exfiltration; water service and quality remained unaffected. No actor has claimed responsibility.
City of Abilene
April 18, 2025
•[ ransomware, data leak ]
On April 18 2025, the City of Abilene, Texas, detected unresponsive servers and shut down affected systems. Reports state certain systems were taken offline and none of the card systems at government offices were working; emergency services remained up and running. The Qilin ransomware group later claimed responsibility; roughly 477 GB of data were reported stolen and some data encrypted/deleted.
Pierce County Library System
April 15, 2025
•[ ransomware, data leak, service disruption ]
The Record reported that the Pierce County Library System discovered a cybersecurity incident on April 21, 2025 that forced it to shut down all systems, with an investigation later finding attackers had access between April 15 and April 21. By May 12, the library confirmed hackers breached systems and stole information on both patrons and current/former employees, and later breach notifications indicated more than 340,000 people were impacted. The report stated the INC ransomware gang claimed the attack in May, and the combination of service shutdown and confirmed data theft supports a mixed event involving disruption and data compromise.
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.
Hamilton County Sheriff’s Office
April 14, 2025
•[ ransomware, data theft, extortion ]
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.
Ontario Health atHome
April 13, 2025
•[ ransomware, data exfiltration, healthcare ]
Ontario Medical Supply (OMS), a vendor supporting Ontario Health atHomes home care supply operations, experienced a ransomware incident in 2025. Reporting described earliest observed access on March 17, 2025, followed by ransomware payload execution on April 13, 2025, after which OMS systems failed and the organization was locked out of a significant portion of servers. Internal reporting referenced impacts to roughly 200,000 patients and indicated breached data included names, contact information, and medical supplies/equipment ordered. OMS later stated only a limited amount of incomplete data was exfiltrated and said it found no evidence of misuse at the time of its statement.
DaVita Inc.
April 12, 2025
•[ ransomware, data leak ]
On April 12, 2025, DaVita reported a ransomware incident that encrypted elements of its network and disrupted some operations. Subsequent disclosures confirmed theft of personal and medical information impacting over one million individuals.
CMC Corporation
April 12, 2025
•[ ransomware, data leak ]
Ransomware group Crypto24 carried out a double-extortion attack against Vietnam-based CMC Corporation on April 12, 2025, exfiltrating roughly 2 TB of internal data and encrypting subsidiary servers for less than one day.
3P Corporation Pty Ltd
April 10, 2025
•[ ransomware, data leak ]
Melbourne-based financial and tax advisory firm 3P Corporation was listed by the Space Bears ransomware group on Apr 10 2025, which claimed to have stolen ~213 GB of corporate and client data; no encryption or service disruption confirmed; breach publicly reported Jun 2 2025.
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.
Fall River Public Schools
April 7, 2025
•[ ransomware, data leak ]
Fall River Public Schools, Massachusetts, suffered a ransomware attack by the Medusa group that encrypted internal systems and disrupted district operations for several weeks. Attackers demanded $400,000 and claimed to have exfiltrated sensitive data, though the district has not verified theft. Recovery costs exceeded $130,000.
Toppan Next Tech
April 7, 2025
•[ ransomware, data leak, third-party breach ]
A ransomware attack on DBS Bank's third-party printing vendor Toppan Next Tech in Singapore led to the potential exposure of around 8,200 DBS customer statements and related letters, mostly for DBS Vickers trading and Cashline loan accounts. The attacker compromised Toppan's systems, leaving encrypted statement files potentially accessible, but DBS' own banking infrastructure and customer funds remained unaffected. Exposed data in the printed correspondence includes customers' names, mailing addresses and details of equity holdings or loan accounts, while passwords, government ID numbers and balances were not part of the leak. Authorities and cybersecurity agencies are assisting the investigation as DBS halts work with the vendor and notifies affected customers.
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.
Department of Pensions
April 2, 2025
•[ ransomware, data theft ]
Department reported a ransomware attack first notified to CERT on April 2; officials overhauling systems and advising pensioners, with no detailed disruption reported; treated as data-theft incident pending further specifics.
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.
Bulgaria’s Permanent Representation to NATO
April 1, 2025
•[ ransomware ]
Novinite/BNR reported MP claims of an April ransomware incident at Bulgarias NATO mission.
