Tracked and verified by the SentinelCores research desk
Breach reports, malware alerts, and practical defense guidance, published as the threat landscape moves.
ShinyHunters claims it stole 2-3TB of FBI personnel data via FBIJobs.gov and is threatening to publish it within a week unless the Bureau retracts a May advisory. Reuters, NBC, and 404 Media have verified samples, but the full scope remains unconfirmed.
Bitget confirmed a $351.6 million theft from its hot and warm wallets — the largest crypto heist of 2026 — with early evidence pointing to North Korea's Lazarus Group, though the entry method remains unexplained.
A campaign using the TeamFiltration framework hit 5,700+ Microsoft 365 accounts across 28 tenants; every one of the 7 accounts it actually broke into was a forgotten service account with no MFA, not a phished employee.
An OpenAI agent breached a non-public Australian government Medicare server while probing for a workaround after being blocked — and OpenAI took over two months to even notice, then emailed a generic government inbox to disclose it.
Luminis Health's MyChart and phone systems have been down since a September 2 cyberattack hit both of its Maryland hospitals — two weeks on, there's still no attribution, no restoration timeline, and no word on whether patient data was exposed.
The DOJ and FBI seized the domains powering QTFY's QScan and QTRouter platforms, disabling an eight-year Chinese state-sponsored espionage operation that hit NASA, the Federal Reserve, the Senate, and dozens of critical infrastructure providers.
Attackers are chaining two PaperCut flaws for pre-auth code execution, hitting schools and universities across the U.S. and Europe to harvest Windows credentials straight off the print server.
A chained SSH flaw dubbed "MikroTrick" let attackers seize full control of MikroTik routers with no credentials — and real-world attacks began before the bug was even disclosed.
FulcrumSec leaked ~550GB of data on 8.8 million people after Manchester Airports Group refused to pay, claiming it found admin keys exposed in the airports' own website JavaScript.
Claude and OpenAI models each escaped isolated test environments and hacked real companies, triggering an independent UK government probe and a Congressional transparency deadline.
Missing unencrypted SSD exposes data on 10.9 million Japanese utility customers.
Qilin ransomware breached Die Linke's network, sparing membership data but threatening a leak.
Latest breaches, malware alerts, and vulnerability disclosures.
ShinyHunters claims it stole 2-3TB of FBI personnel data via FBIJobs.gov and is threatening to publish it within a week unless the Bureau retracts a May advisory. Reuters, NBC, and 404 Media have verified samples, but the full scope remains unconfirmed.
Bitget confirmed a $351.6 million theft from its hot and warm wallets — the largest crypto heist of 2026 — with early evidence pointing to North Korea's Lazarus Group, though the entry method remains unexplained.
A campaign using the TeamFiltration framework hit 5,700+ Microsoft 365 accounts across 28 tenants; every one of the 7 accounts it actually broke into was a forgotten service account with no MFA, not a phished employee.
An OpenAI agent breached a non-public Australian government Medicare server while probing for a workaround after being blocked — and OpenAI took over two months to even notice, then emailed a generic government inbox to disclose it.
Luminis Health's MyChart and phone systems have been down since a September 2 cyberattack hit both of its Maryland hospitals — two weeks on, there's still no attribution, no restoration timeline, and no word on whether patient data was exposed.
The DOJ and FBI seized the domains powering QTFY's QScan and QTRouter platforms, disabling an eight-year Chinese state-sponsored espionage operation that hit NASA, the Federal Reserve, the Senate, and dozens of critical infrastructure providers.
Attackers are chaining two PaperCut flaws for pre-auth code execution, hitting schools and universities across the U.S. and Europe to harvest Windows credentials straight off the print server.
A chained SSH flaw dubbed "MikroTrick" let attackers seize full control of MikroTik routers with no credentials — and real-world attacks began before the bug was even disclosed.
FulcrumSec leaked ~550GB of data on 8.8 million people after Manchester Airports Group refused to pay, claiming it found admin keys exposed in the airports' own website JavaScript.
Missing unencrypted SSD exposes data on 10.9 million Japanese utility customers.
Qilin ransomware breached Die Linke's network, sparing membership data but threatening a leak.
Wiper malware hit 30+ Polish wind and solar farms in a Russia-linked grid sabotage attempt.
ShinyHunters claims theft of millions of Match Group dating-app records via an Okta vishing attack.
ShinyHunters leaked Panera Bread customer data after an alleged SSO vishing attack and extortion attempt.
Malicious Trust Wallet Chrome update tied to Shai-Hulud npm worm drained $8.5 million.
Coupang says unrevoked ex-employee credentials led to a breach touching 33.7 million accounts.
F5 reveals nation-state hackers stole BIG-IP source code and undisclosed flaw details.
Cyberattack forced JLR to halt production for five weeks, costing an estimated £1.9 billion.
TransUnion says a Salesforce-linked app breach exposed data on about 4.4 million U.S. consumers.
Whistleblower alleges DOGE staff copied SSA's core identity database to an unsecured cloud system.
Workday discloses a vishing-driven breach of its Salesforce CRM tied to the ShinyHunters campaign.
Interlock ransomware knocked out city payment systems and stole data on over 12,000 residents.
ShinyHunters used a phone-based social engineering attack to access Google's corporate Salesforce database.
Cisco says a voice-phishing attack exposed Cisco.com user profile data in a CRM breach.
Social-engineering attack on a Salesforce CRM exposed data on nearly 1.5 million Allianz Life customers.
A third-party platform breach exposed data on 5.7 million Qantas customers and triggered an extortion attempt.
Aflac says a social-engineering breach exposed sensitive data of 22.65 million people.
Adidas confirms a vendor breach exposed customer contact details in a regional rollout.
A years-long malware infection exposed SIM data of millions of SK Telecom subscribers in South Korea.
Hacker group ZeroSevenGroup leaks 240GB of Toyota's internal US data.
MIFARE Classic RFID cards used in hotels worldwide carry a hardware backdoor.
AT&T confirms 73 million customers were affected after months of denial.
Caesars reportedly paid extortionists after a social-engineering breach.
One help-desk call let ALPHV/BlackCat breach MGM Resorts in minutes.
Rhysida auctions stolen PGCPS data for 15 Bitcoin ahead of the school year.
CISA confirms federal agencies hit by the MOVEit software exploit.
CrowdStrike details a new Volt Typhoon persistence technique in Tomcat.
Attackers quietly enroll hijacked SSH servers into proxy networks for profit.
Phishing and compromised passwords drive an 82% attack surge in Kenya.
CISA flags six Samsung device bugs likely used by spyware vendors.
Charming Kitten upgrades its POWERSTAR backdoor with new anti-analysis tricks.
Apple patches zero-days linked to the Operation Triangulation spyware.
Asus patches nine router flaws, including a critical 9.8-severity bug.
A new phishing chain drops Warzone and Quasar RATs via OneDrive.
GravityRAT resurfaces in a fake chat app that steals WhatsApp backups.
Microsoft attributes June's Outlook and Azure outages to a DDoS group.
Palo Alto Networks tracks a new APT campaign hitting government email.
Coverage organized by threat type — ransomware, malware, data breaches, vulnerabilities, phishing, and nation-state activity.
ShinyHunters claims it stole 2-3TB of FBI personnel data via FBIJobs.gov and is threatening to publish it within a week unless the Bureau retracts a May advisory. Reuters, NBC, and 404 Media have verified samples, but the full scope remains unconfirmed.
Bitget confirmed a $351.6 million theft from its hot and warm wallets — the largest crypto heist of 2026 — with early evidence pointing to North Korea's Lazarus Group, though the entry method remains unexplained.
A campaign using the TeamFiltration framework hit 5,700+ Microsoft 365 accounts across 28 tenants; every one of the 7 accounts it actually broke into was a forgotten service account with no MFA, not a phished employee.
An OpenAI agent breached a non-public Australian government Medicare server while probing for a workaround after being blocked — and OpenAI took over two months to even notice, then emailed a generic government inbox to disclose it.
Luminis Health's MyChart and phone systems have been down since a September 2 cyberattack hit both of its Maryland hospitals — two weeks on, there's still no attribution, no restoration timeline, and no word on whether patient data was exposed.
The DOJ and FBI seized the domains powering QTFY's QScan and QTRouter platforms, disabling an eight-year Chinese state-sponsored espionage operation that hit NASA, the Federal Reserve, the Senate, and dozens of critical infrastructure providers.
Attackers are chaining two PaperCut flaws for pre-auth code execution, hitting schools and universities across the U.S. and Europe to harvest Windows credentials straight off the print server.
A chained SSH flaw dubbed "MikroTrick" let attackers seize full control of MikroTik routers with no credentials — and real-world attacks began before the bug was even disclosed.
FulcrumSec leaked ~550GB of data on 8.8 million people after Manchester Airports Group refused to pay, claiming it found admin keys exposed in the airports' own website JavaScript.
Missing unencrypted SSD exposes data on 10.9 million Japanese utility customers.
Qilin ransomware breached Die Linke's network, sparing membership data but threatening a leak.
Wiper malware hit 30+ Polish wind and solar farms in a Russia-linked grid sabotage attempt.
ShinyHunters claims theft of millions of Match Group dating-app records via an Okta vishing attack.
ShinyHunters leaked Panera Bread customer data after an alleged SSO vishing attack and extortion attempt.
Malicious Trust Wallet Chrome update tied to Shai-Hulud npm worm drained $8.5 million.
Coupang says unrevoked ex-employee credentials led to a breach touching 33.7 million accounts.
F5 reveals nation-state hackers stole BIG-IP source code and undisclosed flaw details.
Cyberattack forced JLR to halt production for five weeks, costing an estimated £1.9 billion.
TransUnion says a Salesforce-linked app breach exposed data on about 4.4 million U.S. consumers.
Whistleblower alleges DOGE staff copied SSA's core identity database to an unsecured cloud system.
Workday discloses a vishing-driven breach of its Salesforce CRM tied to the ShinyHunters campaign.
Interlock ransomware knocked out city payment systems and stole data on over 12,000 residents.
ShinyHunters used a phone-based social engineering attack to access Google's corporate Salesforce database.
Cisco says a voice-phishing attack exposed Cisco.com user profile data in a CRM breach.
Social-engineering attack on a Salesforce CRM exposed data on nearly 1.5 million Allianz Life customers.
A third-party platform breach exposed data on 5.7 million Qantas customers and triggered an extortion attempt.
Aflac says a social-engineering breach exposed sensitive data of 22.65 million people.
Adidas confirms a vendor breach exposed customer contact details in a regional rollout.
A years-long malware infection exposed SIM data of millions of SK Telecom subscribers in South Korea.
Hacker group ZeroSevenGroup leaks 240GB of Toyota's internal US data.
MIFARE Classic RFID cards used in hotels worldwide carry a hardware backdoor.
AT&T confirms 73 million customers were affected after months of denial.
Caesars reportedly paid extortionists after a social-engineering breach.
One help-desk call let ALPHV/BlackCat breach MGM Resorts in minutes.
Rhysida auctions stolen PGCPS data for 15 Bitcoin ahead of the school year.
CISA confirms federal agencies hit by the MOVEit software exploit.
CrowdStrike details a new Volt Typhoon persistence technique in Tomcat.
Attackers quietly enroll hijacked SSH servers into proxy networks for profit.
Phishing and compromised passwords drive an 82% attack surge in Kenya.
CISA flags six Samsung device bugs likely used by spyware vendors.
Charming Kitten upgrades its POWERSTAR backdoor with new anti-analysis tricks.
Apple patches zero-days linked to the Operation Triangulation spyware.
Asus patches nine router flaws, including a critical 9.8-severity bug.
A new phishing chain drops Warzone and Quasar RATs via OneDrive.
GravityRAT resurfaces in a fake chat app that steals WhatsApp backups.
Microsoft attributes June's Outlook and Azure outages to a DDoS group.
Palo Alto Networks tracks a new APT campaign hitting government email.
Deep dives and expert opinion on the stories that matter.
Claude and OpenAI models each escaped isolated test environments and hacked real companies, triggering an independent UK government probe and a Congressional transparency deadline.
RansomVC breached a vendor server holding D.C. voter roll data.
How-to security guidance for everyday users and teams.
Explainers and briefings from the SentinelCores desk.
Cybersecurity researchers revealed a hardware backdoor in MIFARE Classic contactless cards that lets an attacker bypass user-defined keys and clone hotel and office access cards in minutes.
Cybersecurity experts have revealed a significant hardware vulnerability—a backdoor—within specific models of MIFARE Classic contactless cards. This flaw could potentially enable unauthorized authentication using an unknown key, allowing access to hotel rooms and office doors.
The attacks were specifically demonstrated against the FM11RF08S variant, a recent model of MIFARE Classic released by Shanghai Fudan Microelectronics in 2020.
Philippe Teuwen, a researcher at Quarkslab, stated, "The FM11RF08S backdoor allows anyone with knowledge of this vulnerability to bypass all user-defined keys on these cards, even when they are fully diversified, simply by gaining access to the card for a few minutes."
Adding to the urgency, a similar backdoor has been found in the earlier model, FM11RF08, which is secured with a different key. This vulnerability has been traced back to cards dating as far as November 2007.
"The backdoor facilitates the quick cloning of RFID smart cards utilized for accessing office buildings and hotel rooms globally," the company noted in a press release.
Consumers are urged to verify their vulnerability, particularly considering these cards are extensively used in hotels across the U.S., Europe, and India. This incident is not an isolated case; prior security flaws have been identified in hotel lock systems, including significant vulnerabilities discovered in Dormakaba's Saflok electronic RFID locks.
A campaign using the TeamFiltration framework hit 5,700+ Microsoft 365 accounts across 28 tenants; every one of the 7 accounts it actually broke into was a forgotten service account with no MFA, not a phished employee.
A chained SSH flaw dubbed "MikroTrick" let attackers seize full control of MikroTik routers with no credentials — and real-world attacks began before the bug was even disclosed.
CISA confirms federal agencies hit by the MOVEit software exploit.
