Cyber Defense Advisors

Month: May 2025

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Malicious npm Package Leverages Unicode Steganography, Google Calendar as C2 Dropper

Cybersecurity researchers have discovered a malicious package named “os-info-checker-es6” that disguises itself as an operating system information utility to stealthily drop a next-stage payload onto compromised systems. “This campaign employs clever Unicode-based steganography to hide its initial malicious code and utilizes a Google Calendar event short link as a dynamic dropper for its final payload,” […]

Cyber News

New Chrome Vulnerability Enables Cross-Origin Data Leak via Loader Referrer Policy

Google on Wednesday released updates to address four security issues in its Chrome web browser, including one for which it said there exists an exploit in the wild. The high-severity vulnerability, tracked as CVE-2025-4664 (CVSS score: 4.3), has been characterized as a case of insufficient policy enforcement in a component called Loader. “Insufficient policy enforcement […]

Cyber News

Smashing Security podcast #417: Hello, Pervert! – Sextortion scams and Discord disasters

Don’t get duped, doxxed, or drained! In this episode of “Smashing Security” we dive into the creepy world of sextortion scams, and investigate how crypto wallet firm Ledger’s Discord server was hijacked in an attempt to phish for cryptocurrency recovery phrases. All this and more is discussed in the latest edition of the award-winning “Smashing […]

Cyber News

Samsung Patches CVE-2025-4632 Used to Deploy Mirai Botnet via MagicINFO 9 Exploit

Samsung has released software updates to address a critical security flaw in MagicINFO 9 Server that has been actively exploited in the wild. The vulnerability, tracked as CVE-2025-4632 (CVSS score: 9.8), has been described as a path traversal flaw. “Improper limitation of a pathname to a restricted directory vulnerability in Samsung MagicINFO 9 Server version […]

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BianLian and RansomExx Exploit SAP NetWeaver Flaw to Deploy PipeMagic Trojan

At least two different cybercrime groups BianLian and RansomExx are said to have exploited a recently disclosed security flaw in SAP NetWeaver, indicating that multiple threat actors are taking advantage of the bug. Cybersecurity firm ReliaQuest, in a new update published today, said it uncovered evidence suggesting involvement from the BianLian data extortion crew and […]

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Upcoming Speaking Engagements

This is a current list of where and when I am scheduled to speak: I’m speaking (remotely) at the Sektor 3.0 Festival in Warsaw, Poland, May 21-22, 2025. The list is maintained on this page.  

Cyber News

Xinbi Telegram Market Tied to $8.4B in Crypto Crime, Romance Scams, North Korea Laundering

A Chinese-language, Telegram-based marketplace called Xinbi Guarantee has facilitated no less than $8.4 billion in transactions since 2022, making it the second major black market to be exposed after HuiOne Guarantee. According to a report published by blockchain analytics firm Elliptic, merchants on the marketplace have been found to peddle technology, personal data, and money […]

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CTM360 Identifies Surge in Phishing Attacks Targeting Meta Business Users

A new global phishing threat called “Meta Mirage” has been uncovered, targeting businesses using Meta’s Business Suite. This campaign specifically aims at hijacking high-value accounts, including those managing advertising and official brand pages. Cybersecurity researchers at CTM360 revealed that attackers behind Meta Mirage impersonate official Meta communications, tricking users into handing over sensitive details like […]

Cyber News

Patch Tuesday, May 2025 Edition

Microsoft on Tuesday released software updates to fix at least 70 vulnerabilities in Windows and related products, including five zero-day flaws that are already seeing active exploitation. Adding to the sense of urgency with this month’s patch batch from Redmond are fixes for two other weaknesses that now have public proof-of-concept exploits available. Microsoft and […]

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