MUST READ

Nation-state and criminal actors leverage WinRAR flaw in attacks

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OpenSSL issued security updates to fix 12 flaws, including Remote Code Execution

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U.S. CISA adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog

 | 

Fortinet patches actively exploited FortiOS SSO auth bypass (CVE-2026-24858)

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PackageGate bugs let attackers bypass protections in NPM, PNPM, VLT, and Bun

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WhatsApp rolls out Strict Account settings to strengthen protection for high-risk users

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Shadowserver finds 6,000+ likely vulnerable SmarterMail servers exposed online

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U.S. CISA adds Microsoft Office, GNU InetUtils, SmarterTools SmarterMail, and Linux Kernel flaws to its Known Exploited Vulnerabilities catalog

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Amnesia RAT deployed in multi-stage phishing attacks against Russian users

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Dormakaba flaws allow to access major organizations’ doors

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Emergency Microsoft update fixes in-the-wild Office zero-day

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ShinyHunters claims 2 Million Crunchbase records; company confirms breach

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Energy sector targeted in multi-stage phishing and BEC campaign using SharePoint

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North Korea–linked KONNI uses AI to build stealthy malware tooling

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Russia-linked Sandworm APT implicated in major cyber attack on Poland’s power grid

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Nike is investigating a possible data breach, after WorldLeaks claims

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SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 81

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Security Affairs newsletter Round 560 by Pierluigi Paganini – INTERNATIONAL EDITION

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Osiris ransomware emerges, leveraging BYOVD technique to kill security tools

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U.S. CISA adds a flaw in Broadcom VMware vCenter Server to its Known Exploited Vulnerabilities catalog

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LATEST NEWS

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Security
Nation-state and criminal actors leverage WinRAR flaw in attacks
Pierluigi Paganini January 29, 2026

Multiple threat actors exploited a now-patched critical WinRAR flaw to gain initial access and deliver various malicious payloads. Google Threat Intelligence Group (GTIG) revealed that multiple th ...

Security
OpenSSL issued security updates to fix 12 flaws, including Remote Code Execution
Pierluigi Paganini January 29, 2026

OpenSSL released security updates that address 12 flaws, including a high-severity remote code execution vulnerability. OpenSSL issued security updates fixing 12 vulnerabilities in the open-source ...

Security
U.S. CISA adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog
Pierluigi Paganini January 28, 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure ...

Security
Fortinet patches actively exploited FortiOS SSO auth bypass (CVE-2026-24858)
Pierluigi Paganini January 28, 2026

Fortinet released fixes for a critical FortiOS SSO auth bypass (CVE-2026-24858) actively exploited, impacting FortiOS, FortiManager, and FortiAnalyzer. Fortinet started rolling out patches for a c ...

top articles

Fortinet fixed two critical flaws in FortiFone and FortiSIEM
January 14, 2026
VoidLink shows how one developer used AI to build a powerful Linux malware
January 21, 2026
Crooks impersonate LastPass in campaign to harvest master passwords
January 21, 2026
Russia-linked Sandworm APT implicated in major cyber attack on Poland’s power grid
January 26, 2026
Nike is investigating a possible data breach, after WorldLeaks claims
January 25, 2026

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Security

Nation-state and criminal actors leverage WinRAR flaw in attacks

January 29, 2026

Security
OpenSSL issued security updates to fix 12 flaws, including Remote Code Execution

January 29, 2026

Security
U.S. CISA adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog

January 28, 2026

Security
Fortinet patches actively exploited FortiOS SSO auth bypass (CVE-2026-24858)

January 28, 2026

Hacking
PackageGate bugs let attackers bypass protections in NPM, PNPM, VLT, and Bun

January 28, 2026

recent articles

Security
Nation-state and criminal actors leverage WinRAR flaw in attacks

Multiple threat actors exploited a now-patched critical WinRAR flaw to gain initial access and deliver various malicious payloads. Google Threat Intelligence Group (GTIG) revealed that multiple th ...

Pierluigi Paganini January 29, 2026
Security
OpenSSL issued security updates to fix 12 flaws, including Remote Code Execution

OpenSSL released security updates that address 12 flaws, including a high-severity remote code execution vulnerability. OpenSSL issued security updates fixing 12 vulnerabilities in the open-source ...

Pierluigi Paganini January 29, 2026
Security
U.S. CISA adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in multiple Fortinet products to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure ...

Pierluigi Paganini January 28, 2026
Security
Fortinet patches actively exploited FortiOS SSO auth bypass (CVE-2026-24858)

Fortinet released fixes for a critical FortiOS SSO auth bypass (CVE-2026-24858) actively exploited, impacting FortiOS, FortiManager, and FortiAnalyzer. Fortinet started rolling out patches for a c ...

Pierluigi Paganini January 28, 2026
Hacking
PackageGate bugs let attackers bypass protections in NPM, PNPM, VLT, and Bun

Koi researchers found “PackageGate” flaws in NPM, PNPM, VLT, and Bun that let attackers perform supply chain attacks and run malicious code. Security firm Koi uncovered a set of vulnerabilitie ...

Pierluigi Paganini January 28, 2026
Security
WhatsApp rolls out Strict Account settings to strengthen protection for high-risk users

Meta announced new Strict Account Settings on WhatsApp to better protect high-risk users from advanced cyber attacks. Meta announced new Strict Account Settings on WhatsApp to enhance the security ...

Pierluigi Paganini January 27, 2026
Hacking
Shadowserver finds 6,000+ likely vulnerable SmarterMail servers exposed online

Shadowserver researchers found 6,000+ SmarterMail servers exposed online and likely vulnerable to a critical auth bypass flaw. Nonprofit security organization Shadowserver reported that over 6,000 ...

Pierluigi Paganini January 27, 2026
Security
U.S. CISA adds Microsoft Office, GNU InetUtils, SmarterTools SmarterMail, and Linux Kernel flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Microsoft Office, GNU InetUtils, SmarterTools SmarterMail, and Linux Kernel flaws to its Known Exploited Vulnerabilities catalog. ...

Pierluigi Paganini January 27, 2026
Malware
Amnesia RAT deployed in multi-stage phishing attacks against Russian users

A multi-stage phishing campaign targets users in Russia with ransomware and Amnesia RAT using fake business documents as lures. FortiGuard Labs researchers uncovered a multi-stage malware campaign ...

Pierluigi Paganini January 27, 2026
Hacking
Dormakaba flaws allow to access major organizations’ doors

Researchers found over 20 flaws in Dormakaba access systems that could let attackers remotely unlock doors at major organizations. Researchers from SEC Consult discovered and fixed more than 20 se ...

Pierluigi Paganini January 27, 2026
Hacking
Emergency Microsoft update fixes in-the-wild Office zero-day

Microsoft issued emergency updates to fix an actively exploited Office zero-day, CVE-2026-21509, affecting Office 2016–2024 and Microsoft 365 Apps. Microsoft released out-of-band security update ...

Pierluigi Paganini January 26, 2026
Data Breach
ShinyHunters claims 2 Million Crunchbase records; company confirms breach

Crunchbase confirms a data breach after cybercrime group ShinyHunters claims to have stolen over 2 million personal records. Crunchbase confirmed a data breach after the cybercriminal group ShinyH ...

Pierluigi Paganini January 26, 2026
Cyber Crime
Energy sector targeted in multi-stage phishing and BEC campaign using SharePoint

Microsoft warns of a multi-stage phishing and BEC campaign hitting energy firms, abusing SharePoint links and inbox rules to steal credentials. Microsoft reports an active multi-stage phishing cam ...

Pierluigi Paganini January 26, 2026
APT
North Korea–linked KONNI uses AI to build stealthy malware tooling

Check Point links an active phishing campaign to North Korea–aligned KONNI, targeting developers with fake blockchain project docs and using an AI-written PowerShell backdoor. Check Point Resear ...

Pierluigi Paganini January 26, 2026
Breaking News
Russia-linked Sandworm APT implicated in major cyber attack on Poland’s power grid

Russia-linked APT Sandworm launched what was described as the largest cyber attack on Poland’s power grid in Dec 2025. ESET linked a late-2025 cyberattack on Poland’s energy system to the Russ ...

Pierluigi Paganini January 26, 2026
Data Breach
Nike is investigating a possible data breach, after WorldLeaks claims

Nike is investigating a possible cyber incident after the WorldLeaks group claimed it stole data from the company’s systems. Nike is probing a potential security breach after the WorldLeaks cybe ...

Pierluigi Paganini January 25, 2026
Malware
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 81

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter UNO reverse card: stealing cookies from ...

Pierluigi Paganini January 25, 2026
Breaking News
Security Affairs newsletter Round 560 by Pierluigi Paganini – INTERNATIONAL EDITION

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly Security ...

Pierluigi Paganini January 25, 2026
Security
Osiris ransomware emerges, leveraging BYOVD technique to kill security tools

Researchers identified a new Osiris ransomware used in a November 2025 attack, abusing the POORTRY driver via BYOVD to disable security tools. Symantec and Carbon Black researchers uncovered a new ...

Pierluigi Paganini January 24, 2026
Security
U.S. CISA adds a flaw in Broadcom VMware vCenter Server to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw impacting Broadcom VMware vCenter to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastruc ...

Pierluigi Paganini January 24, 2026