Latest cybersecurity reporting from selected sources.

Also, Arch Linux Attack, Estonia Quarantines Russian Emails, Joomla FlawThis week, ShinyHunters leaked alleged Madison Square Garden data, a U.S. senator pressed CISA on regional staffing cuts, an Arch Linux supply-chain attack, Mackay Sugar began recovery from a ransomware attack, Novo Nordisk faced dueling breach claims - and more compelling cybersecurity news.

Internal Communications Dumped Online, Revealing Fresh Victims, Repeat TacticsRansomware group The Gentlemen, a relative newcomer to the cybercrime scene, suffered a leak of its internal communications, revealing previously non-public victims, a variety of tactics, techniques and tools, and a relentless focus on popping backup and storage infrastructure.

Cybercrime Gang Claims to Have 108-Gbyte Trove of Insurer's Files, FoldersRansomware gang Everest Group claims to have stolen more than 108 gigabytes of data- including policyholder details - belonging to insurer Liberty Mutual. The cybercrime group began leaking the company's alleged data on Monday afternoon, saying the insurer "failed" to respond to the gang's demands.

Also, Eurail Breach, ChipSoft Hospital Disruptions, W3LL Phishing TakedownThis week, a "Raccoon"-linked actor hit help desks, Eurail exposed 308K users, Fortinet patched critical flaws, Pushpaganda scams, major data leaks hit healthcare and China, ransomware and phishing ops surged, and multiple breaches impacted firms and hospitals.

Also, Lloyds Data Leak, Dutch Treasury Breach, Citrix Bug Exploit, Pay2Key ActivityThis week, Lloyds data leak hits 450K, Dutch treasury breach, Citrix flaw exploited, Iran-linked ransomware ops, TrueConf zero-day, Russian fraud ring sentenced, Romania targeted, patch gaps persist, and U.S. hospital breach affects 257K.

Bitcoin Joining Fee for Affiliates and No Proven Victims Cited by ResearchersNewcomer ransomware group 0APT is being branded a "likely scam operation," not least after a list of over 200 supposed victims turned out to be bogus, if not entirely AI-generated - never mind a 1 bitcoin joining fee for would-be affiliates and outdated crypto-locking malware.

Ransomware Gang Everest Claims It Has Leaked All Stolen DataA revenue cycle management software firm is notifying an undisclosed number of patients of several medical diagnostic labs that their sensitive information, including diagnoses and treatments, was stolen in a November hack. Ransomware gang Everest Group claims it has leaked all the data.

Revenue From Supply-Chain Attacks by Clop Group Sharply Fell, Report InvestigatorsOnce lucrative steal-and-leak campaigns pioneered by Russian ransomware group Clop look set to go the way of the dinosaurs. While an estimated 25% of victims paid a ransom in the inaugural campaign five years ago, the number of victims that paid fell to zero by 2023, report ransomware responders.

Russia-Linked Ransomware Group Dumps Customer Data After Failed Extortion AttemptUnder Armour may trade on the "blood, sweat, respect" slogan, but a Russia-linked ransomware group hasn't been abiding, after they stole data pertaining to 72.7 million of the athleisure giant's customers, then leaked it on darkweb sites after saying the retailer refused to pay a ransom.

More Than 100,000 Affected by Hack Detected on Dec. 30The New Zealand government is probing a year-end ransomware hack of private healthcare service provider Manage My Health that impacted thousands of patients. Digital extortion group Kazu has claimed responsibility and threatened to leak the data on Jan. 15 unless it receives a $60,000 ransom.

Also: SudamericaData Leak, RaccoonO365 Arrest and Nefilim Conspirator Pleads GuiltyThis week: Spotify metadata scraped, Nissan disclosed third-party breach, millions of Argentines exposed to data leak, African police arrested hundreds in a cybercrime sweep, Nigeria nabbed a phishing operator, the U.S. DOJ charged ATM jackpotting ring and Nefilim ransomware affiliate pleaded guilty.

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."

Cybercrime Gang Rhysida Still Lists the Practice on Its Leak Site Among Its VictimsA Kansas medical group will pay $1.2 million to settle proposed class action litigation involving an attack that compromised the sensitive data of nearly 256,000 individuals. The Rhysida ransomware operation claimed responsibility and said it stole 3 terabytes.

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.

Clop Ransomware Group Targeted NHS Barts Health in AugustA National Health Service hospital is seeking assistance from the U.K. High Court to stymie a potential data leak tied to a ransomware hack. The hospital, NHS Barts, said ransomware group Clop targeted its network in August.

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.

Criminals Claim Leak of Customer Data From Six Victims, Including Qantas AirlinesA ransomware group that's been extorting Salesforce customers leaked some stolen data, following the FBI disrupting its shakedown sites. ShinyHunters, part of the rebranded Scattered Lapsus$ Hunters group, after leaking data from six victims, declared its Salesforce customer shakedown over.

Deploy Emergency Patch for Zero-Day Flaw, Hunt for Signs of Intrusion, Warn ExpertsOracle patched a zero-day vulnerability in Oracle E-Business Suite and urged customers to immediately install the fix. The flaw has been exploited since August by the Clop ransomware group, and with exploit code now having leaked, experts expect to see many more attackers join the fray.

Scattered Lapsus$ Hunters Claims 1 Billion Stolen Records, Pressures Victims to PayContinuing its ongoing extortion of Salesforce customers, the Scattered Lapsus$ Hunters ransomware operation has launched a data leak site, claiming to have stolen 1 billion records from hundreds of organizations that integrated Salesforce with the Salesloft Drift AI chatbot.