MPOWERHealth
June 29, 2025
•[ ransomware, leak, hack ]
WorldLeaks, a criminal ransomware group, claimed responsibility for a June 29, 2025 cyberattack on MPOWERHealth in Addison, Texas. The attackers exfiltrated roughly 1.5 TB of data (over 1.6 million files), including PHI, insurance claims, internal documents, login credentials, and cyber-insurance records. While negotiations began, the company ceased responding, after which WorldLeaks leaked the stolen files. Reports indicate data theft and exposure but no confirmed operational outage.
Operation Endgame 2.0
June 23, 2025
•[ ransomware, malware, government ]
In May 2025, a coalition of law enforcement agencies took down the criminal infrastructure behind the malware used to launch ransomware attacks in a new phase of "Operation Endgame". This followed the first Operation Endgame exercise a year earlier, with the latest action resulting in 15.3M victim email addresses being provided to HIBP by law enforcement. A further 43.8M victim passwords were also provided for HIBP's Pwned Passwords service.
Unnamed hotels in Brazil
June 13, 2025
•[ phishing, financial, malware ]
TA558 used LLM-generated JS/PowerShell loaders in phishing emails (Portuguese/Spanish) to deploy Venom RAT against hotels (Brazil/Spanish-speaking markets), aiming to siphon guest credit-card data from hotel systems/OTAs; observed in summer 2025, with no named victims or outages.
Manassas Park City Schools
June 12, 2025
•[ ransomware, malware, education ]
The MPCS network was infiltrated and encrypted via ransomware around June 12, 2025; data may have been accessed including full names paired with SSNs, passport numbers, or financial account details. No group has claimed responsibility. Investigation ongoing and FBI notified.
Undisclosed Ukrainian Energy Organization
June 6, 2025
•[ malware, apt, data destruction ]
PathWiper malware associated with a pro-Russian APT destroyed data at an undisclosed Ukrainian energy organization on June 6, 2025; Cisco Talos and CERT-UA confirmed data destruction; no data theft reported.
Ingonyama Trust Board
June 1, 2025
•[ ransomware, malware, government ]
On June 1, 2025, the NightSpire ransomware group attacked the Ingonyama Trust Board in South Africa, stealing around 30 GB of potentially sensitive organizational data. Reports confirm exfiltration but no encryption or disruption of systems. The incident became public on August 29, 2025.
WhatsApp/Apple
June 1, 2025
•[ espionage, malware, technology ]
A zero-click spyware campaign exploited WhatsApp and Apple zero-day flaws, infecting fewer than 200 civil society individuals globally between June and August 2025. Attackers likely state-sponsored.
At least one Ukrainian grain producer
June 1, 2025
•[ malware, wiper attack, state-sponsored attack ]
Russian state-backed threat group Sandworm, also known as APT44, used several data-wiping malware families in a series of destructive attacks against Ukrainian organizations in 2025, including newly reported operations targeting the countrys grain sector. An ESET APT activity report cited by BleepingComputer says that in June and September Sandworm deployed wipers like ZEROLOT and Sting against entities in the governmental, energy, logistics, and grain industries, with the grain sector highlighted as a less frequent but strategically important target. The wipers corrupt files, disk partitions, and master boot records in ways that prevent recovery, likely aiming to weaken Ukraines war economy by disrupting a critical export industry.
Undisclosed Kyrgyzstan organization
June 1, 2025
•[ phishing, malware, state-sponsored ]
A nation-state actor known as Bloody Wolf conducted spearphishing impersonating the Kyrgyz Ministry of Justice to deploy JAR loaders and install NetSupport RAT for persistent access to organizational systems; no data theft was reported.
Eastern Idaho College
May 30, 2025
•[ malware ]
Malware infection discovered around May 30, 2025 forced College of Eastern Idaho to shut down all computer systems, including internet and email services, for several days; operations gradually restored; no data theft or encryption reported.
West Texas Oral Facial Surgery
May 29, 2025
•[ hack, ransomware, leak ]
West Texas Oral Facial Surgery suffered a cyberattack beginning May 29, 2025, when INC RANSOM gained unauthorized access to its systems. Patient files including names, imaging data, and treatment reasons were exfiltrated, but no encryption of systems was reported. SSNs, financial information, and the electronic medical records system were not affected. The breach impacted over 11,000 individuals and was reported to HHS-OCR on August 2 and to the Texas Attorney General on August 4.
Multiple Thai bank ATMs
May 28, 2025
•[ skimming, malware ]
Police arrested a Bulgarian for allegedly installing devices/malware on ATMs; article cites arrests rather than a confirmed disruptive/theft effect on a named victim org. Not coded as a cyberattack event.
Operation Endgame 2.0
May 23, 2025
•[ ransomware, malware, government ]
In May 2025, a coalition of law enforcement agencies took down the criminal infrastructure behind the malware used to launch ransomware attacks in a new phase of "Operation Endgame". This followed the first Operation Endgame exercise a year earlier, with the latest action resulting in 15.3M victim email addresses being provided to HIBP by law enforcement. A further 43.8M victim passwords were also provided for HIBP's Pwned Passwords service.
ApolloMD (Business Associate to 11 Physician Practices)
May 22, 2025
•[ ransomware, malware, healthcare ]
ApolloMD confirmed unauthorized access to its network on May 2223 2025 affecting 11 affiliated physician practices. The Qilin ransomware group claimed to have stolen approximately 238 GB of data, including patient and insurance information. ApolloMD did not confirm encryption or ransom payment.
Independent film makers
May 21, 2025
•[ espionage, malware, government ]
While detained in May 2025, filmmakers phones were allegedly infected with FlexiSPY; forensic analysis ties installation to police custody (May 21). Devices were returned July 10. CPJ/Citizen Lab publicly detailed findings on Sept 1012; The Standard reported the allegations Sept 10.
Union County (Ohio) government / county systems
May 18, 2025
•[ ransomware, malware, government ]
A ransomware attack on Union County, Ohios public administration systems led to both encryption and data exfiltration. Data was stolen from internal government databases containing personal, financial, and biometric records of 45,487 individuals. Approximately 12 systems were encrypted, causing partial disruption for several days. No ransomware group has claimed responsibility.
PDI Health
May 14, 2025
•[ ransomware, leak, malware ]
On May 14, 2025, PDI Health discovered a cyberattack when the Everest ransomware group infiltrated its internal systems and exfiltrated sensitive patient records. The group leaked samples and claimed responsibility on the dark web, revealing more than 373,000 records stolen. No evidence of encryption or service disruption was confirmed.
Undisclosed U.S. government agency (reported as “Department of Government Efficiency”)
May 8, 2025
•[ infostealer, malware, credential leak ]
Ars Technica reports a government software engineers workstation was infected with info-stealing malware, with login credentials appearing in multiple stealer-log dumps since 2023; investigation centers on credential exposure rather than confirmed enterprise compromise.
KazMunaiGas
May 5, 2025
•[ social, hack, phishing ]
A spear-phishing campaign disguised as internal HR communications delivered multi-stage malware to KMG employees. Attackers used a compromised business email, LNK downloader, PowerShell (DOWNSHELL), and DLL implant to establish reverse shell access. KMG later labeled it a phishing test.
Alcaldía de Cáchira
May 2, 2025
•[ malware, theft ]
Authorities arrested suspects accused of using malware to access municipal accounts and steal $1.935 million COP from the Cchira mayors office.
