Cybersecurity Brief – 2026-01-15

Thu, 15 Jan 2026 00:00:00 +0000

Major Incidents or Breaches

Kyowon Group, a major South Korean conglomerate, confirmed a ransomware attack resulting in operational disruption and potential exposure of customer data.
Cloud marketplace Pax8 inadvertently exposed internal business information, including MSP customer data, to fewer than 40 UK-based partners via email.
Robo-advisor Betterment disclosed a breach where a threat actor accessed customer information and sent scam crypto-related messages.
Free Mobile and its parent company, Free, were fined €42 million by the French CNIL for inadequate protection of customer data related to a 2024 breach.

Fortinet patched a critical unauthenticated remote code execution vulnerability in FortiSIEM. Public exploit code and technical details for this flaw have been released.
Additional critical vulnerabilities in Fortinet products, including FortiFone, were disclosed and patched, with risks of configuration leaks and code execution.
Chrome 144 and Firefox 147 released patches for high-severity vulnerabilities, addressing 26 security defects including code execution risks.
Microsoft’s January 2026 Patch Tuesday addressed 114 Windows vulnerabilities, including one actively exploited in the wild.
A DLL side-loading vulnerability in the open-source c-ares library is being actively exploited to bypass security controls and deploy malware.

Microsoft and law enforcement disrupted the RedVDS cybercrime-as-a-service platform, which facilitated phishing, BEC, account takeover, and fraud, and was linked to over $40 million in losses.
Researchers null-routed over 550 command-and-control servers associated with the AISURU/Kimwolf botnet, which had infected over two million devices since October 2025.
A major phishing campaign abused Google’s infrastructure, targeting over 3,000 organizations (primarily in manufacturing) to bypass email security defenses.
Magecart skimming attacks are targeting online checkouts using major payment networks such as AmEx, Diners Club, and Mastercard.
The newly emerged Sicarii Ransomware-as-a-Service operation began advertising across underground forums in December 2025.
Predator spyware has been found to use failed attacks for intelligence gathering to improve future exploit attempts.
Fake “account restricted” comments are being posted on LinkedIn as part of phishing campaigns to steal user credentials.

Microsoft was the most impersonated brand in phishing attacks during Q4 2025, followed by Facebook, Roblox, McAfee, and Steam.
OAuth phishing attacks using the ConsentFix technique are evolving, with attackers hijacking Microsoft accounts via browser-based authorization flows.
The “Reprompt” attack technique allowed hijacking of Microsoft Copilot sessions for sensitive data exfiltration.
AI agents are increasingly being integrated into core workflows, raising concerns about privilege escalation pathways.
64% of third-party applications on leading websites now access sensitive data without business justification, up from 51% in 2024.
Attackers are leveraging legitimate open-source software downloads to conceal remote backdoors.
The “VoidLink” modular malware framework is targeting Linux systems, designed for stealthy, long-term access in cloud-first environments.
Infection campaigns are repeatedly adding scheduled tasks and increasing communication with persistent C2 domains.

The French CNIL imposed a €42 million fine on Free Mobile and Free for failing to adequately protect customer data in a 2024 breach incident.
An investor lawsuit related to the CrowdStrike outage was dismissed due to lack of evidence of investor fraud.