ZenBusiness
March 27, 2026
•[ data breach, extortion, ransomware ]
In March 2026, the hacker and extortion group "ShinyHunters" claimed to have obtained a substantial corpus of data from ZenBusiness, a business formation and compliance platform. The group claimed the data had been exfiltrated from platforms including Snowflake, Mixpanel and Salesforce, and threatened to publish it if a ransom was not paid. The following month, after claiming payment had not been made, ShinyHunters publicly released the data. The collection amounted to many terabytes across thousands of files that appeared to originate from multiple systems and business functions, including leads, support records and other CRM-related data. The data contained approximately 5M unique email addresses, often accompanied by name and phone number depending on the source file.
LiteLLM
March 24, 2026
•[ supply chain attack, malware, credential theft ]
TeamPCP used compromised release access to publish malicious LiteLLM versions to PyPI, embedding code that exfiltrated secrets and established persistence on systems that installed the poisoned packages.
Le Centre national des œuvres universitaires et scolaires
March 23, 2026
•[ data leak, data exfiltration, personal information ]
The Cnous said data was exfiltrated from its mesrdv.etudiant.gouv.fr appointment platform, exposing personal information from student social-services and housing appointments taken over the past ten years.
The Ukrainian State Hydrology Agency
March 19, 2026
•[ phishing, vulnerability exploitation, XSS ]
BleepingComputer reported that Russia-linked APT28 (GRU) exploited a Zimbra Collaboration Suite vulnerability (CVE-2025-66376) in attacks targeting Ukrainian government entities. Researchers described a phishing operation (Operation GhostMail) where a single HTML email body triggered obfuscated JavaScript exploiting the Zimbra XSS flaw when opened in a vulnerable webmail session. The payload was described as harvesting credentials, session tokens, backup 2FA codes, browser-saved passwords, and mailbox contents going back 90 days, with exfiltration over DNS and HTTPS. One referenced target was the Ukrainian State Hydrology Agency.
The Gauteng Provincial Governmen
March 17, 2026
•[ ransomware, data leak, data exfiltration ]
Daily Maverick reported a ransomware-as-a-service syndicate calling itself XP95 claimed it stole 3.8TB of data from the Gauteng Provincial Government. The article describes the breach as a major failure of basic cybersecurity infrastructure and governance, with a massive dataset reportedly lifted/exfiltrated and allegedly offered for sale. The report did not provide a definitive public inventory of affected systems or all data elements, but characterized the exposure as potentially spanning personnel, procurement, and other government records at very large scale.
Undisclosed U.S. aerospace and defense firm
March 6, 2026
•[ backdoor, data exfiltration, nation-state actor ]
SecurityWeek summarized Broadcom Symantec/Carbon Black reporting that Iran-linked MuddyWater (also known as Seedworm/Mango Sandstorm and linked to Irans MOIS) had established presence in multiple organizations networks, including a US airport, a US bank, an NGO operating in the US and Canada, an aerospace and defense contractor, and a software company with a presence in Israel. The report said MuddyWater deployed a new backdoor called Dindoor in several environments and a Python backdoor called Fakeset in others, and attempted to exfiltrate data from the software companys Israeli branch.
Fundação Getúlio Vargas
February 19, 2026
•[ ransomware, data-extortion, data leak ]
TecMundo reported that ransomware/data-extortion group Dragonforce listed Fundao Getulio Vargas (FGV) as a purported victim and claimed a compromise of 1.52 TB of data, posting images of documents as proof and setting a countdown (typical extortion deadline) for publication if ransom is not paid. TecMundo said it reviewed sample documents that appeared to include internship registration forms, personnel/event records, and project proposals. FGV responded that it had experienced service/provider instability that was resolved and that it had no confirmation of system intrusion or data exfiltration, stating that anonymous dark web postings were not proof.
StarHub
February 10, 2026
•[ cyber espionage, state-sponsored, data exfiltration ]
Singapore confirmed that China-linked cyber espionage group UNC3886 targeted the countrys telecom infrastructure, including StarHub. The government said attackers gained limited access to parts of telecom systems, did not disrupt services, and did not access personal data, but did exfiltrate a small amount of technical (network-related) data to advance operational objectives.
Multiple organizations with exposed MongoDB databases
January 30, 2026
•[ MongoDB, data breach, ransomware ]
A threat actor actively accessed, queried, and ransacked more than 1400 publicly exposed MongoDB application servers, exfiltrating data and leaving ransom notes demanding payment in exchange for deletion or non-disclosure of the stolen information.
McDonald's India
January 20, 2026
•[ ransomware, data leak, data exfiltration ]
HackRead reported that on January 20, 2026 the Everest ransomware group claimed it breached McDonalds India and exfiltrated 861 GB of customer data and internal documents. The report described screenshots purportedly showing internal financial reports (20232026), audit trails, cost tracking, ERP migration files, pricing data, and other internal communications, as well as a Contact Database spreadsheet with investor/business-partner contact details and store-level manager contact information. Everest reportedly issued a short deadline and threatened to leak data; the article noted the claim was unverified at the time.
At least one Afghan government worker
January 20, 2026
•[ phishing, malware, data exfiltration ]
The Record reported that attackers targeted Afghan government workers with phishing emails disguised as official correspondence from the office of the countrys prime minister. Researchers said the campaign, first detected in December, used a decoy document resembling a government letter (including a forged signature) to entice recipients in ministries/administrative offices to open it. Once opened, the document delivered malware dubbed FalseCub, designed to collect and exfiltrate data from infected computers. The report is focused on the campaign and malware behavior; it does not list specific compromised agencies, confirmed infection counts, or stolen data volumes, so impacts are coded as undetermined.
Kyowon Group
January 14, 2026
•[ ransomware, service outage, data exfiltration ]
Kyowon Group, a large South Korean conglomerate with major education/publishing and digital services operations, confirmed a ransomware incident after initially describing a suspected attack that caused service outages. In a follow-up update, the company stated the incident occurred in January around 10 a.m. and that an attacker exfiltrated data from its systems. Reporting cited Korean media indicating the event may have impacted a substantial portion of Kyowons infrastructure (roughly 600 of 800 servers) and that there are millions of registered accounts, though Kyowon said it was still determining whether stolen data included customer information. The company said it notified relevant authorities (including KISA), engaged security experts, and worked to restore services while conducting a detailed investigation into scope and data exposure.
Endesa
January 13, 2026
•[ data breach, unauthorized access, data exfiltration ]
SecurityWeek reported that Spanish energy company Endesa notified customers about a data breach involving unauthorized access to its commercial platform, also impacting customers of its gas distributor Energia XXI. Endesa stated that attackers accessed and likely exfiltrated basic customer identification information, contact details, national identification numbers (DNI), contract information, and payment details including IBANs. The company said passwords were not compromised and that the incident was contained quickly, with additional safeguards implemented and notifications sent to affected customers.
Undisclosed Taiwanese healthcare organization #5
January 12, 2026
•[ ransomware, cyber intrusion, data exfiltration ]
The CrazyHunter ransomware group conducted a cyber intrusion against a healthcare organization in Taiwan by exploiting application-layer access, resulting in unauthorized access and data exfiltration. Security reporting confirms the victim as one of multiple Taiwanese healthcare entities affected, though specific organizational details were not publicly disclosed.
Langley Twigg Law
January 11, 2026
•[ cyberattack, data breach, malware ]
Langley Twigg Law (Napier, New Zealand) stated it was hit by a cyberattack on January 11, 2026. The firm said digital forensics and cyber specialists confirmed a malicious third-party launched a virus on its IT network, which was not protected by its cybersecurity software at the time. The firm reported the attacker extracted a portion of data from its file server containing internal operational information and some client documents. Langley Twigg said it disconnected its network from the internet, notified the Privacy Commissioner and police, and was working to determine exactly what information was affected before contacting impacted clients.
American Vanguard
January 10, 2026
•[ data leak, data exfiltration, unauthorized access ]
The Osiris threat group gained unauthorized access to American Vanguard systems in early January 2026 and exfiltrated corporate and financial data. Security reporting and attacker leak listings indicate data theft, though no explicit confirmation of file encryption was reported. Operational impacts appear linked to incident response and remediation activities.
UrbanX.io
January 6, 2026
•[ data leak, initial access broker, information-stealer malware ]
SecurityWeek reported that Hudson Rock linked dozens of major breaches to a single initial access broker operating under the aliases Zestix and Sentap. The actor is described as using credentials harvested via information-stealer malware (including RedLine, Lumma, and Vidar) from infected employee devices to log into enterprise file-transfer/file-sharing environments such as ShareFile, OwnCloud, and Nextcloud when MFA was missing. After gaining access, the actor allegedly exfiltrated sensitive corporate data and monetized it by selling datasets or access on closed Russian-language forums, with victim organizations spanning sectors such as aerospace, government infrastructure, legal services, and robotics.
QualDerm
December 23, 2025
•[ data breach, data leak, unauthorized access ]
SecurityWeek reported that QualDerm Partners is notifying more than 3.1 million people of a December 2025 breach discovered on Dec. 24, 2025. QualDerm said attackers had unauthorized access to its network for two days and exfiltrated data from a limited number of compromised systems. Stolen data included personal identifiers and health/insurance information such as names, addresses, dates of birth, email addresses, medical record numbers, doctor names, treatment/diagnosis information, health insurance information, dates of death, and in some cases government-issued ID information. QualDerm said its investigation is ongoing and it notified law enforcement and regulators.
National Credit Regulator (NCR)
December 12, 2025
•[ cyberattack, ransomware, data exfiltration ]
The South African National Credit Regulator confirmed it was the victim of a cyberattack in December 2025 that disrupted some of its systems. A ransomware group known as DragonForce claimed responsibility and alleged the exfiltration and publication of alleged 42 GB of data, but the regulator stated investigations were ongoing and has not confirmed data exfiltration, encryption, or the attackers identity.
Center for Life Resources
November 14, 2025
•[ unauthorized access, network intrusion, data breach ]
Center for Life Resources identified unauthorized access to its network in mid-November 2025 and determined that files containing sensitive personal and protected health information may have been accessed or copied, which was later disclosed in regulatory notifications.
