Cybersecurity Brief – 2025-12-03

Wed, 03 Dec 2025 00:00:00 +0000

Major Incidents or Breaches

Coupang, a major South Korean e-commerce platform, suffered a data breach compromising the personal information (names, addresses, email addresses, and phone numbers) of 33.7 million users over a five-month period.
The University of Pennsylvania confirmed a data breach after attackers stole documents containing personal information from Oracle E-Business Suite servers in August.
Korean authorities arrested four individuals for hacking over 120,000 IP cameras and selling intimate footage to a foreign adult site.
The Shai-Hulud 2.0 npm malware attack exposed up to 400,000 developer secrets after infecting hundreds of npm packages and publishing stolen data in 30,000 GitHub repositories.
Five Chrome and Edge browser extensions, with over 4 million installs, turned malicious after years of benign operation, acting as spyware and tracking users.
Microsoft Defender XDR portal experienced a prolonged outage, disrupting access to security alerts and threat hunting capabilities for over 10 hours.
OpenAI’s ChatGPT service suffered a global outage, with users unable to access conversations.
Yearn Finance’s yETH pool on Ethereum was exploited for approximately $9 million via a critical vulnerability.

Google’s December 2025 Android security update patched 107 vulnerabilities, including two zero-days (CVE-2023-40088 and CVE-2023-40089) actively exploited in targeted attacks.
A vulnerability in OpenAI’s Codex CLI (CVE-2025-61260) could allow command execution, potentially facilitating attacks on developers using the coding agent.
Microsoft released KB5070311 for Windows 11, addressing File Explorer freezes and search issues, but also introduced a bug causing bright white flashes in dark mode.
Malicious npm package eslint-plugin-unicorn-ts was discovered using hidden prompts and scripts to evade AI-driven security scanners.
Chrome and Edge extensions were caught creating backdoors, profiling users, and reading cookie data to generate unique identifiers.
The Raptor framework, an open-source AI tool, was demonstrated to generate both vulnerability exploits and patches using agentic workflows.

North Korean threat actors (DPRK/Lazarus) were observed luring engineers to rent their identities for fraudulent IT work and distributing over 197 malicious npm packages since October 10, targeting software developers.
The GlassWorm supply chain campaign resurfaced, infiltrating Microsoft Visual Studio Marketplace and Open VSX with 24 malicious extensions impersonating popular developer tools.
Iran-linked MuddyWater group deployed a new backdoor, MuddyViper, in targeted attacks against Israeli sectors, including academia, engineering, government, manufacturing, technology, transportation, and utilities. The new Fooder loader and memory-only tactics indicate a shift to more stealthy espionage operations.
An ongoing phishing campaign is spoofing top brands via fake Calendly invites to hijack Google Workspace and Facebook business accounts.
Researchers reported that cybercrime has shifted to a full subscription model, with phishing kits, Telegram OTP bots, infostealer logs, and RATs now offered as “crime-as-a-service”.

Kaspersky Security Bulletin 2025 highlighted a significant increase in AI-driven biometric attacks, with 1 in 5 biometric attacks now leveraging AI-generated deepfakes.
Researchers demonstrated that presenting prompts to AI models in poetic form increased jailbreak success rates from 8% to 43%.
Attackers are leveraging supply chain attacks via malicious npm and Visual Studio extensions targeting developers.
Crime-as-a-service offerings continue to proliferate, making advanced cybercrime tools and infrastructure more accessible.
Tools like SecAlerts are emerging to streamline vulnerability management amid increasing software sprawl.
The Raptor AI framework exemplifies the dual-use nature of generative AI in both offensive and defensive security contexts.

India’s Department of Telecommunications mandated that messaging apps may only be used with active SIM cards linked to user identities, aiming to reduce fraud and misuse.
The US FTC reached a settlement with Illuminate Education, requiring deletion of unnecessary student data and improved security practices following allegations of inadequate data protection.
New York enacted a law requiring retailers to disclose if consumer data influences the pricing of basic goods.