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Three Microsoft Defender Zero-Days Actively Exploited; Two Still Unpatched

Three Microsoft Defender Zero-Days Actively Exploited; Two Still Unpatched

Ravie LakshmananApr 17, 2026Vulnerability / Endpoint Security Huntress is warning that threat actors are exploiting three recently disclosed security flaws in Microsoft Defender to gain elevated privileges in compromised systems. The activity involves the exploitation of… 

NIST Limits CVE Enrichment After 263% Surge in Vulnerability Submissions

NIST Limits CVE Enrichment After 263% Surge in Vulnerability Submissions

Ravie LakshmananApr 17, 2026Vulnerability Management The National Institute of Standards and Technology (NIST) has announced changes to the way it handles cybersecurity vulnerabilities and exposures (CVEs) listed in its National Vulnerability Database (NVD), stating it… 

Operation PowerOFF Seizes 53 DDoS Domains, Exposes 3 Million Criminal Accounts

Operation PowerOFF Seizes 53 DDoS Domains, Exposes 3 Million Criminal Accounts

Ravie LakshmananApr 17, 2026DDoS / Cybercrime An international law enforcement operation has taken down 53 domains and arrested four people in connection with commercial distributed denial-of-service (DDoS) operations that were used by more than 75,000… 

Apache ActiveMQ CVE-2026-34197 Added to CISA KEV Amid Active Exploitation

Apache ActiveMQ CVE-2026-34197 Added to CISA KEV Amid Active Exploitation

Ravie LakshmananApr 17, 2026Vulnerability / Enterprise Security A recently disclosed high-severity security flaw in Apache ActiveMQ Classic has come under active exploitation in the wild, per the U.S. Cybersecurity and Infrastructure Security Agency (CISA). To that end,… 

Newly Discovered PowMix Botnet Hits Czech Workers Using Randomized C2 Traffic

Newly Discovered PowMix Botnet Hits Czech Workers Using Randomized C2 Traffic

Ravie LakshmananApr 16, 2026Botnet / Cryptomining Cybersecurity researchers have warned of an active malicious campaign that’s targeting the workforce in the Czech Republic with a previously undocumented botnet dubbed PowMix since at least December 2025. “PowMix employs… 

Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories

Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories

Ravie LakshmananApr 16, 2026Hacking News / Cybersecurity News You know that feeling when you open your feed on a Thursday morning and it’s just… a lot? Yeah. This week delivered. We’ve got hackers getting creative in ways that… 

[Webinar] Find and Eliminate Orphaned Non-Human Identities in Your Environment

[Webinar] Find and Eliminate Orphaned Non-Human Identities in Your Environment

Mohit KumarApr 16, 2026Artificial Intelligence / Enterprise Security In 2024, compromised service accounts and forgotten API keys were behind 68% of cloud breaches. Not phishing. Not weak passwords. Unmanaged non-human identities that nobody was watching. For every employee… 

Cisco Patches Four Critical Identity Services, Webex Flaws Enabling Code Execution

Cisco Patches Four Critical Identity Services, Webex Flaws Enabling Code Execution

Ravie LakshmananApr 16, 2026Vulnerability / Network Security Cisco has announced patches to address four critical security flaws impacting Identity Services and Webex Services that could result in arbitrary code execution and allow an attacker to… 

Obsidian Plugin Abuse Delivers PHANTOMPULSE RAT in Targeted Finance, Crypto Attacks

Obsidian Plugin Abuse Delivers PHANTOMPULSE RAT in Targeted Finance, Crypto Attacks

Ravie LakshmananApr 16, 2026Application Security / Threat Intelligence A “novel” social engineering campaign has been observed abusing Obsidian, a cross-platform note-taking application, as an initial access vector to distribute a previously undocumented Windows remote access…