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GitHub access sales, leaked repositories, and stolen API keys can all become supply-chain attack footholds. Flare explores how underground forums expose early signals tied to software supply-chain risk. [...]
An information-stealing malware operation named Arkanix Stealer, promoted on multiple dark web forums towards the end of 2025, was likely developed as an AI-assisted experiment. [...]
Eurail B.V., the operator that provides access to 250,000 kilometers of European railways, confirmed that data stolen in a breach earlier this year is being offered for sale on the dark web. [...]
Newcomer 'Insomnia' Appears to Favor US Healthcare-Related EntitiesA new cybercriminal gang, Insomnia, appears to have its eyes wide open for potential healthcare-related targets. Since surfacing on the darkweb in recent weeks, the apparent data theft group has chalked up 18 alleged victims on its data leak site, with more than half having ties to healthcare.
A Slovakian national admitted on Tuesday to helping operate a darknet marketplace that sold narcotics, cybercrime tools and services, fake government IDs, and stolen personal information for more than two years. [...]
PLUS: Veeam patches critical vuln; Crims bribing dark web insiders; UK school takedown; And more infosec in brief Meta has fixed a flaw in its Instagram service that allowed third parties to generate password reset emails, but denied the problem led to theft of users’ personal information.…
Every year, cybercriminals find new ways to steal money and data from businesses. Breaching a business network, extracting sensitive data, and selling it on the dark web has become a reliable payday. But in 2025, the data breaches that affected small and medium-sized businesses (SMBs) challenged our perceived wisdom about exactly which types of businesses cybercriminals are targeting. 
Ransomware Gang Rhysida Leaks 3.7TB of Data Stolen From Maryland Hospital SystemMaryland-based MedStar Health, which operates 10 hospitals, is notifying patients about a data theft incident affecting their personal information. Ransomware group Rhysida claims on its darkweb leak site to have 3.7 terabytes of MedStar's data, including "over 7 million pieces of patient data."
Class Members Can Claim Up to $5K Each for Documented Losses Tied to BreachA small, rural county-owned Georgia community hospital has agreed to settle consolidated class action litigation involving a 2024 hacking incident in which ransomware gang Embargo claimed to have stolen 1.15 terabytes of the organization's data and leaked it on the darkweb.
Dartmouth College has disclosed a data breach after the Clop extortion gang leaked data allegedly stolen from the school's Oracle E-Business Suite servers on its dark web leak site. [...]
Atroposia is a newly discovered modular RAT that uses encrypted channels and advanced theft capabilities to target credentials and crypto wallets
Ransomware Group Lynx Reportedly Stole 4TB of DataThe U.K. Ministry of Defense is investigating an apparent data breach by Russian-speaking ransomware hackers of a building facilities contractor with ties to the military. The Lynx ransomware group posted on its darkweb site samples of what it says is 4 terabytes of data stolen from the Dodd Group.
2022 Ransomware Attack, Data Theft Affected 3.4 Million PatientsA California-based network of nine affiliated physician practices will pay nearly $50 million to settle consolidated class action litigation involving a 2022 ransomware and data theft attack that affected more than 3.4 million patients. Plaintiffs claimed their data was leaked on the darkweb.
Cybercriminals Demanded Ransom Payments Directly From Some Affected PatientsAn Oklahoma health system will pay $30 million to settle class action litigation involving a 2023 data theft hack that affected 2.4 million people. Some of the patients - including minors - have received blackmail demands directly from cybercriminals threatening to sell their data on the darkweb.
Medusa Group Tied to Attack on SimonMed and Threats to Leak Stolen DataTwo radiology practices are notifying nearly 1.5 million people of separate hacking incidents compromising their sensitive health information. Cybercrime gang Medusa claimed credit for attacking Arizona-based SimonMed Imaging in January and threatened to leak the stolen data of nearly 1.3 million patients on the darkweb.
Medusa Group Tied to Attack on SimonMed and Threats to Leak Stolen DataTwo radiology practices are notifying nearly 1.5 million people of separate hacking incidents compromising their sensitive health information. Cybercrime gang Medusa claimed credit for attacking Arizona-based SimonMed Imaging in January and threatened to leak the stolen data of nearly 1.3 million patients on the darkweb.
Stolen DaVita Data Leaked on Dark Web by Ransomware Gang InterlockMonths after cybercriminal gang Interlock claimed to have stolen more than 1.5 terabytes of patient data from kidney dialysis chain DaVita, the company told federal regulators that the cyberattack first disclosed in April has affected nearly 2.7 million people.
Colt customers can request a list of filenames posted on the dark web via a dedicated call center
Worried about your data? Not to worry, we'll check the dark web for you! Yes really A week after its services were disrupted by a cyberattack, UK telco Colt Technology Services has gone back on its initial statement to confirm that data has indeed been stolen.…
A Dark Web antihero has been stealing and then reselling credentials from unsavory online characters. Their motives are questionable, but the schadenfreude is irresistible.