Cybersecurity Brief – 2025-11-26

Wed, 26 Nov 2025 00:00:00 +0000

Major Incidents or Breaches

Dartmouth College disclosed a data breach after the Clop extortion gang leaked data allegedly stolen from Oracle E-Business Suite servers.
The OnSolve CodeRED platform suffered a cyberattack disrupting emergency notification systems used by state and local governments, police departments, and schools across the US.
Major US banks were impacted by a hack of SitusAMC, resulting in the theft of corporate data such as accounting records and legal agreements. No ransomware was deployed.
Harvard University confirmed a compromise of a system containing alumni, donor, student, and staff information, following a phone phishing attack.
Researchers identified that years of credential leaks-including passwords and API keys-originated from organizations pasting sensitive data into public online tools like JSONFormatter and CodeBeautify, affecting banks, governments, and tech firms.

Newly Discovered Vulnerabilities

Five vulnerabilities in Fluent Bit, an open source logging tool, were disclosed, potentially enabling path traversal, remote code execution, denial-of-service, and tag manipulation attacks against cloud services.
A hardware module was demonstrated that can bypass AMD and Intel memory encryption, undermining confidential computing protections.
WhatsApp closed an API loophole that previously allowed researchers to scrape data on 3.5 billion accounts, including profile photos and “about” text.

Notable Threat Actor Activity

The Clop ransomware gang was responsible for the Dartmouth College data breach via exploitation of Oracle E-Business Suite.
ToddyCat, a known threat actor, deployed new tools including TCSectorCopy to steal Outlook emails and Microsoft 365 access tokens from corporate targets.
DPRK-linked actor “FlexibleFerret” continued to refine social engineering and credential theft campaigns targeting macOS users, notably in the “Contagious Interview” campaign.
Chinese state-linked hackers targeted Russian IT organizations using commercial cloud services for command and control to evade detection.
Russian threat actors targeted a US engineering firm due to its work for a Ukrainian sister city, but the attack was detected before causing operational impact.
Iranian cyber operations were linked to “cyber-enabled kinetic targeting,” aiding real-world missile strikes by providing targeting support.
CISA issued warnings about spyware campaigns focusing on high-value messaging app users.
A new ClickFix variant, dubbed “JackFix,” leveraged fake Windows update pop-ups on adult sites and images to deliver multiple stealers, circumventing previous mitigations.
A campaign was observed where Blender Foundation 3D asset files were weaponized to deliver StealC V2 information-stealing malware.
The “Shai-Hulud” supply chain attack infected 640 npm packages with a self-replicating worm capable of erasing home directories if propagation fails.

Trends, Tools, or Tactics of Interest

The FBI reported a surge in account takeover (ATO) fraud, with cybercriminals impersonating bank support teams and stealing over $262 million since January 2025.
Researchers and the FBI cite a rise in AI-driven phishing and holiday-themed scams, with threat actors leveraging AI to scale attacks, automate reconnaissance, and craft highly convincing lures.
Malicious large language models (LLMs) such as WormGPT 4 and KawaiiGPT are being used by cybercriminals for phishing, malware development, and reconnaissance.
Sophisticated phishing attacks continue to bypass advanced enterprise security measures.
The new ClickFix/JackFix campaigns utilize psychological pressure and technical evasion to increase infection rates, including hiding malware in PNG images and faking Windows updates.
The use of public code beautifier and formatter tools as inadvertent credential leak vectors is a persistent issue across multiple sectors.
Threat actors are increasingly exploiting supply chain weaknesses, as seen in the 2025 systemic ransomware events affecting Jaguar Land Rover and other automotive manufacturers.

Regulatory or Policy Developments Affecting the Security Industry

Tor announced the adoption of the new Counter Galois Onion (CGO) relay encryption algorithm, replacing the older tor1 design to improve circuit traffic security.
US Immigration and Customs Enforcement (ICE) raised the cap on its immigrant-tracking program, offering up to $280 million to private surveillance firms, expanding the scope of surveillance-related contracts.

Cybersecurity Brief – 2025-11-25

Tue, 25 Nov 2025 00:00:00 +0000

Major Incidents or Breaches

SitusAMC, a major real-estate finance services provider, disclosed a data breach impacting customer data.
Harvard University reported a compromise of its Alumni Affairs and Development systems via a voice phishing attack, resulting in exposure of personal data of students, alumni, donors, and staff.
Delta Dental of Virginia suffered a breach affecting 146,000 individuals, with names, Social Security numbers, ID numbers, and health information stolen from a compromised email account.
Spanish airline Iberia notified customers of a data breach following claims of 77GB of stolen data.
Multiple organisations, including Canon, Cox, and Mazda, have been named as victims in the Oracle E-Business Suite (EBS) extortion campaign, with Cox confirming over 1.6 TB of data was stolen and Canon confirming subsidiary impact. Mazda reported no data leakage or operational impact.
Illegal streaming devices (e.g., Superbox, modded Amazon Fire TV Sticks) have been implicated in widespread scams, data theft, and integration into botnets.
Russian-linked threat actors are distributing StealC V2 infostealer malware via malicious Blender 3D model files uploaded to online marketplaces.
CISA issued a warning about active spyware campaigns targeting high-value Signal and WhatsApp users, leveraging commercial spyware and remote access trojans (RATs).

Newly Discovered Vulnerabilities

Five vulnerabilities have been identified in Fluent Bit, a widely used open-source telemetry agent, which can be chained to achieve remote code execution and stealthy intrusions into cloud infrastructure.
A critical flaw in Oracle Identity Manager (CVE-2025-61757) is under active exploitation and has been added to CISA’s Known Exploited Vulnerabilities catalog.
New Chrome and Fortinet zero-day vulnerabilities were reported as being actively exploited.
Microsoft confirmed a critical bug in Windows 11 24H2 causing File Explorer and Start Menu crashes when provisioning systems with cumulative updates.
Issues with URL mapping and URL-based access control continue to present high-profile vulnerabilities, notably in Oracle Identity Manager.
The Ray framework, used in AI clusters, has an exploitable flaw being used to hijack infrastructure for cryptomining and data theft.

Notable Threat Actor Activity

A new wave of Shai-Hulud malware attacks is targeting the npm registry, infecting over 500 packages (including well-known names like Zapier and Postman) and leaking secrets on GitHub. The campaign now executes malicious code during the preinstall phase, increasing exposure risks in build and runtime environments.
Threat actors are exploiting Black Friday by distributing phishing emails, scams, and malware targeting online shoppers and gamers. They are also selling stolen data and compromised accounts on the dark web.
The “ClickFix” attack uses a fake Windows Update animation in browsers to trick users and deliver malware, with the payload hidden in image files.
Matrix Push C2 is abusing browser push notifications to deliver realistic phishing and malware alerts.
CrowdStrike terminated an insider who aided hackers in falsely claiming a system breach by sharing internal screenshots.
The “Scattered LAPSUS$ Hunters” group continues to be active, according to recent threat intelligence reporting.

Trends, Tools, or Tactics of Interest

Vision language models are being advanced for physical security applications, enhancing employee safety monitoring.
Amazon has deployed an Autonomous Threat Analysis system using specialised AI agents for automated bug detection and remediation.
Research shows that the Chinese DeepSeek-R1 AI model generates insecure code, particularly when prompted with topics related to Tibet or Uyghurs.
Microsoft highlighted security risks introduced by new agentic AI features, warning that AI agents could perform malicious actions without proper controls.
Increased use of cloud-native patching is being advocated due to limitations and deprecation of traditional tools (SCCM and WSUS) in hybrid work environments.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft announced the removal of Windows Internet Name Service (WINS) support from Windows Server releases starting November 2034.
CISA’s alert and addition of Oracle Identity Manager’s CVE-2025-61757 to the KEV catalog increases urgency for remediation across affected organisations.

Fluent Bit on DanSec Daily

Cybersecurity Brief – 2025-11-26

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments Affecting the Security Industry

Cybersecurity Brief – 2025-11-25

Major Incidents or Breaches

Newly Discovered Vulnerabilities

Notable Threat Actor Activity

Trends, Tools, or Tactics of Interest

Regulatory or Policy Developments Affecting the Security Industry