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New Gaslight macOS Malware Uses Prompt Injection to Disrupt AI-Assisted Analysis

New Gaslight macOS Malware Uses Prompt Injection to Disrupt AI-Assisted Analysis

Ravie LakshmananJun 25, 2026AI Security / Malware A previously undocumented Rust-based macOS implant and information stealer has been found to embed a prompt injection payload designed to trick a malware analyst’s artificial intelligence (AI) tools… 

New Mistic Backdoor Linked to KongTuke in ClickFix and ModeloRAT Campaigns

New Mistic Backdoor Linked to KongTuke in ClickFix and ModeloRAT Campaigns

Ravie LakshmananJun 25, 2026Initial Access Broker / Ransomware A new, stealthy backdoor named Mistic has been deployed as part of suspected financially motivated attacks aimed at multiple organizations spanning insurance, education, IT, and professional services… 

Cisco Catalyst SD-WAN Zero-Day CVE-2026-20245 Exploited to Gain Root Access

Cisco Catalyst SD-WAN Zero-Day CVE-2026-20245 Exploited to Gain Root Access

Ravie LakshmananJun 25, 2026Vulnerability / Threat Intelligence An unknown threat actor exploited a recently disclosed high-severity security flaw impacting Cisco Catalyst SD-WAN as a zero-day at least two months before it was publicly disclosed, according… 

CISA Warns Critical Lantronix EDS5000 Flaw Is Being Actively Exploited

CISA Warns Critical Lantronix EDS5000 Flaw Is Being Actively Exploited

Ravie LakshmananJun 24, 2026Vulnerability / Network Security The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday warned of active exploitation of a critical security flaw impacting Lantronix EDS5000 Series devices, urging Federal Civilian Executive… 

Amadey and StealC Malware Network Disrupted, 27M Stolen Credentials Recovered

Amadey and StealC Malware Network Disrupted, 27M Stolen Credentials Recovered

A coordinated law enforcement operation, in partnership with private sector companies, including Bitdefender, Bitsight, ESET, and Microsoft, has resulted in the takedown of criminal infrastructure powering Amadey and StealC. “The main common goal was to… 

Cordyceps CI/CD Flaws Expose 300+ GitHub Repositories to Supply-Chain Attacks

Cordyceps CI/CD Flaws Expose 300+ GitHub Repositories to Supply-Chain Attacks

Ravie LakshmananJun 24, 2026Open Source / Supply Chain Security Cybersecurity researchers have flagged a new class of CI/CD workflow weakness that allows attackers to hijack workflows and compromise open-source supply chains. The “critical exploitable pattern”… 

Cisco Unified CM Flaw Exploited After PoC Reveals File-Write Path to Root

Cisco Unified CM Flaw Exploited After PoC Reveals File-Write Path to Root

Ravie LakshmananJun 24, 2026Vulnerability / Network Security Threat actors have begun to exploit a recently disclosed critical security flaw impacting Cisco Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM… 

FortiBleed Targeted FortiGate Firewalls in 110 Million-Credential Harvesting Operation

FortiBleed Targeted FortiGate Firewalls in 110 Million-Credential Harvesting Operation

Ravie LakshmananJun 23, 2026Initial Access Broker / Firewall Security A Russian-speaking initial access broker (IAB) driven by financial gain is assessed to be behind a large-scale credential-harvesting operation known as FortiBleed that has targeted over…