Attorney General’s Office of the State of Guanajuato (FGEG)
November 13, 2025
•[ ransomware, data leak, double-extortion ]
Mexico Business News reports Guanajuatos Attorney Generals Office confirmed a cybersecurity incident after a ransomware attack attributed to Tekir APT. Attackers claim they stole 250GB+ of confidential data, including judicial files and internal databases. Officials are reviewing controls, without confirming attribution or ransom payment. Hackmanac alleges subdomain encryption and double-extortion.
Eurofiber
November 13, 2025
•[ data leak ]
In November 2025, Eurofiber France disclosed a data breach of its ticket management platform. Data containing 10k unique email addresses and a smaller number of names and phone numbers was subsequently leaked. A threat actor claiming responsibility for the breach alleges to have additional, more sensitive data including screenshots, VPN configuration files, credentials, source code, certificates, archives, and SQL backup files.
Operation Endgame 3.0
November 13, 2025
•[ infostealer, remote access trojan, botnet ]
Between 10 and 13 November 2025, the latest phase of Operation Endgame was coordinated from Europol's headquarters in The Hague. The actions targeted one of the biggest infostealer Rhadamanthys, the Remote Access Trojan VenomRAT, and the botnet Elysium, all of which played a key role in international cybercrime. Authorities took down these three large cybercrime enablers and provided 2 million impacted email addresses and 7.4 million passwords to HIBP.
SitusAMC
November 12, 2025
•[ data leak ]
Real-estate finance services provider SitusAMC, headquartered in New York, disclosed that on November 12, 2025 it detected a breach affecting internal systems used to support back-office services for major lenders; investigations indicate that corporate data on some clients and unspecified data about their customers were accessed, though SitusAMC reports no impact on business operations and says no encrypting malware was deployed.
Mikord
November 12, 2025
•[ data leak, sabotage, hacktivism ]
The Record reported that an anonymous hacker group allegedly breached Mikords servers and provided a trove of internal documents to an anti-war human rights group, including source code, technical and financial records, and internal correspondence. The report stated the hackers claimed months-long access and said they destroyed parts of Mikords infrastructure; Mikords website was reportedly offline for days and had been defaced earlier in December. While the company did not publicly acknowledge involvement in Russias military registry, investigative verification cited in the article indicated the leaked materials supported its participation, suggesting the breach had both data-theft and disruptive/destructive elements.
French Ministry of the Interior
November 12, 2025
•[ government, data leak, email compromise ]
Frances Interior Minister confirmed that the Ministry of the Interior experienced a cyberattack affecting its email servers. The intrusion was detected overnight between 12/11/2025 and 12/12/2025 and enabled the threat actors to access the ministrys email infrastructure and some document files. At the time of public confirmation, officials had not confirmed whether data was exfiltrated. In response, the ministry reported implementing standard containment procedures, tightening security protocols, and strengthening access controls. French authorities opened an investigation to determine the origin, intent, and full scope of the breach; possible explanations cited publicly included foreign interference, activists, or cybercriminals. The ministry is a high-value target given its responsibility for police forces, internal security, and immigration services.
International Kiteboarding Organization
November 11, 2025
•[ data leak ]
In November 2025, the International Kiteboarding Organization suffered a data breach that exposed 340k user records. The data was subsequently listed for sale on a hacking forum and included email addresses, names, usernames and in many cases, the user's city and country.
Princeton University
November 10, 2025
•[ phishing, data leak ]
A phone phishing scam enabled unauthorized access to Princeton Universitys Advancement database containing alumni, donor, student, parent, and some faculty information; the breach lasted under 24 hours and the university has not determined what data was viewed or extracted.
Knownsec
November 9, 2025
•[ data leak, cyber espionage, malware ]
According to coverage in The Register of research by Chinese blog MXRN, attackers breached the systems of Beijing linked security company Knownsec and leaked more than twelve thousand classified documents describing Chinese state cyber weapons, internal tools and global targeting lists, along with code for remote access trojans that can compromise major desktop and mobile operating systems; the cache also reportedly includes a spreadsheet of 80 successfully attacked overseas targets and massive datasets such as Indian immigration records, South Korean telecom call logs and Taiwanese road planning information that Knownsec had previously obtained in offensive operations, some of which were briefly published to GitHub before being removed.
OpenAI (Mixpanel Incident)
November 9, 2025
•[ data leak ]
OpenAI reported that on November 9 an attacker accessed Mixpanels analytics application server and exported limited customer-identifiable metadata including names, emails, coarse location, browser and operating system information, referring websites, and account identifiers; no credentials, API keys, chat content, or service disruption occurred.
Beckett Collectibles
November 9, 2025
•[ data leak ]
In November 2025, Beckett Collectibles experienced a data breach accompanied by website content defacement. The stolen data was later advertised for sale on a prominent hacking forum, with portions subsequently released publicly. The publicly circulating data included more than 500k email addresses reportedly belonging to North American customers, along with a smaller subset containing names, usernames, phone numbers and physical addresses.
Beckett Collectibles
November 9, 2025
•[ data leak, website defacement ]
In November 2025, Beckett Collectibles experienced a data breach accompanied by website content defacement. The stolen data was later advertised for sale on a prominent hacking forum, with portions subsequently released publicly. The publicly circulating data initially included more than 500k email addresses reportedly belonging to North American customers, before a larger corpus of over 1M addresses was published the following month. The impacted data included names, usernames, phone numbers and physical addresses.
Logitech
November 8, 2025
•[ ransomware, data leak ]
Swiss outlet watson.ch, citing Tribune de Genve and 24 Heures, reports that Swiss peripherals maker Logitech was listed on the Clop ransomware gangs dark web leak site, with extortionists claiming to have stolen data and threatening to publish it unless a ransom was paid; subsequent regulatory filings and security reporting confirm t
Protei
November 8, 2025
•[ data leak, hack, website defacement ]
Surveillance-technology and telecom systems provider Protei, founded in Russia and now headquartered in Jordan, was hacked by an unidentified actor who defaced its public website around November 8, 2025 and stole the contents of its web server, including about 182 GB of historical emails and files related to its deep packet inspection and lawful intercept products used by telecoms across dozens of countries.
Salesforce customers via Gainsight-published applications
November 8, 2025
•[ data leak, supply chain attack, API abuse ]
A large-scale supply-chain campaign abused OAuth tokens linked to Gainsight-published applications integrated with Salesforce, enabling unauthorized API calls that accessed certain customers Salesforce data; according to Salesforce and multiple security advisories, suspicious activity began around November 8, 2025, and may have affected more than 200 Salesforce instances before tokens were revoked and the apps were pulled from the AppExchange.
Georgia Superior Court Clerks’ Cooperative Authority
November 8, 2025
•[ ransomware, data leak ]
The Devman ransomware group attacked the Georgia Superior Court Clerks Cooperative Authority beginning November 8, 2025. GSCCCA voluntarily restricted access to its systems while investigating a credible cyber threat. Devman claimed to have exfiltrated 500 GB of organizational data from GSCCCAs application servers and demanded a $400,000 ransom by November 27.
U.S. Congressional Budget Office
November 6, 2025
•[ data leak ]
The U.S. Congressional Budget Office confirmed a cybersecurity incident after a suspected foreign hacker breached its network, potentially exposing sensitive internal information. A CBO spokesperson told BleepingComputer that the agency identified the intrusion, immediately contained it, and deployed additional monitoring and new security controls while the investigation continues. Reporting based on U.S. officials indicates that emails and exchanges between congressional offices and CBO analysts may have been accessed, raising concerns that draft reports, economic forecasts, and other confidential communications could be at risk, although the extent of any data exfiltration has not yet been established and CBOs work for Congress is continuing.
Checkout.com
November 6, 2025
•[ extortion, unauthorized access, data leak ]
Checkout.com reported that an extortion actor accessed a legacy cloud file storage system and claimed to have obtained data; the company confirmed unauthorized access but no operational disruption or verified data theft.
Mower County
November 6, 2025
•[ ransomware, data leak, government ]
Mower County reported that it detected a ransomware attack on June 18, 2025 and investigated with cybersecurity and data forensics consultants. The county said unauthorized access to its systems occurred sometime between June 11 and June 18, 2025 and that sensitive personal data collected by the county was stolen. Reported affected data types include Social Security numbers, birthdates, names, ID card numbers, fingerprints, financial account information, medical/health insurance information, and payment card information. As of Dec. 3, 2025, the county said it had no indication the stolen information had been released or offered for sale; it also noted approximately 27,064 notification letters were being sent.
Zilvia.net
November 6, 2025
•[ data leak ]
In November 2025, data breached from the Zilvia.net Nissan 240SX Silvia and Z Fairlady car forum was leaked. The breach exposed 288k unique email addresses along with usernames, IP addresses and salted MD5 password hashes sourced from the vBulletin based platform. Attempts to contact Zilvia.net about the incident were unsuccessful.
