Silent Ransom Group
Russia-linked extortion gang escalates from phone calls to physical office visits. Silent Ransom Group (UNC3753 / Luna Moth / Chatty Spider) poses as IT support to breach US law firms and professional services. 38 firms leaked.
Data exfiltration within hours of initial contact. New Mandiant report covers Jan–May 2026 campaign.
Source: BleepingComputer / Mandiant / FBI FLASH
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C0XMO Botnet
New Gafgyt variant spreads via a 5-year-old DD-WRT router flaw, then kills rival malware to monopolize the device.
C0XMO exploits CVE-2021-27137 a stack buffer overflow in the UPnP service for unauthenticated access. Cross-platform, moving between architectures. FortiGuard Labs discovered it.
Source: BleepingComputer / FortiGuard Labs
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Miasma Worm Hits Microsoft GitHub
1/2⚠️The Miasma supply chain worm has hit 73 Microsoft GitHub repositories across four orgs Azure, Azure-Samples, Microsoft, and MicrosoftDocs. GitHub disabled access to the impacted repos. The worm re-compromised the "durabletask" PyPI package, previously targeted by TeamPCP last month for Linux credential theft.
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2/2 Miasma is an evolved variant of Mini Shai-Hulud, mutating rapidly new poisoned repos created daily with slight description variations. The worm steals secrets from developer environments and self-propagates via compromised CI/CD pipelines. This is the most significant enterprise-grade supply chain escalation to date.
Source: The Hacker News / OpenSourceMalware
Full analysis → @VulnerabilityNw
AI Agent 21 FFmpeg Zero-Days
1/2🔓An autonomous AI agent from RevEng AI discovered 21 confirmed zero-days in FFmpeg each with a reproducible PoC after scanning the project's 1.5M lines of C. Claude Mythos also pulled a 16-year-old H.264 flaw from FFmpeg for $10K. In the same week, Google shipped Chrome 149 with patches for 429 security bugs the most in a single release.
2/2 Chrome's worst: CVE-2026-10881, CVSS 9.6 an out-of-bounds read/write in ANGLE that escapes the sandbox. Google paid $97K for it. The trend is accelerating: AI agents are finding bugs faster than teams can patch. The February benchmark had an agent reproduce PoCs for 50%+ of 100 Linux kernel N-days.
Source: The Hacker News / RevEng AI
Full analysis → @VulnerabilityNw
Smart TV Proxies for AI Scraping
Researcher reverse-engineers Bright Data's iOS SDK embedded in free apps, it turns always-on smart TVs into exit nodes for AI web-scraping traffic. The successor to Luminati (the Hola VPN scandal), Bright Data sells residential proxy access to AI companies bypassing datacenter IP blocks. The SDK's peer tunnel has fewer security checks than most malware.
Source: The Hacker News / Lowpass
Full analysis → https://t.co/Slr9YmI7KM
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ChatGPT Lockdown Mode
OpenAI rolls out Lockdown Mode for ChatGPT an optional security setting that kills live browsing, canvas networking, image retrieval, and file downloads to block URL-based data exfiltration via prompt injection. Not intended for everyone, but a meaningful hardening option for orgs handling sensitive data.
Source: The Hacker News / OpenAI
Full analysis → https://t.co/Slr9YmI7KM
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Everest Forms Pro RCE
WordPress Everest Forms Pro under active attack.
CVE-2026-3300, CVSS 9.8 unauthenticated RCE via crafted file upload. Wordfence blocked 29,300+ exploitation attempts since April 13. 4,000 active
installs exposed.
Source: BleepingComputer / Wordfence
Full analysis → https://t.co/Slr9YmI7KM
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Five Eyes: Chinese Spy Recruitment
Five Eyes agencies warn Chinese operatives are posing as recruiters on professional platforms to target government and military personnel.
Goal: compromise individuals with access to classified or privileged information. Tailored fake job offers serve as the initial vector.
Source: SecurityWeek
Full analysis → https://t.co/Slr9YmI7KM
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Claude Code GH Action Prompt Injection
Microsoft Threat Intelligence found a prompt injection pathway in Claude Code's GitHub Action that could exfiltrate workflow secrets under specific conditions.
Anthropic patched after coordinated disclosure. Research includes attack chain analysis and CI/CD hardening guidance.
Source: Microsoft Security Blog
Full analysis → https://t.co/Slr9YmI7KM
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Chinese APT UNC5221
Chinese espionage group UNC5221 deployed three malware families to persist in compromised Microsoft 365 environments.
Brickstorm backdoor paired with previously undocumented Plenet and AgentPSD cloud-focused persistence tools targeting tenant credentials post-breach.
Source: BleepingComputer
Full analysis → https://t.co/Slr9YmI7KM
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IronWorm + Miasma npm Supply Chain
Two concurrent npm supply chain attacks. IronWorm — a Rust-built stealer that hides behind an eBPF kernel rootkit and phones home over Tor. A new Miasma worm variant self-replicates across poisoned packages. JFrog: 50+ packages compromised across both campaigns. ⚠️
Source: The Hacker News / JFrog
Full analysis → https://t.co/Slr9YmI7KM
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Android Spyware Asin
Android spyware Asin targets Arabic-speaking users through decoy sites posing as news portals, PDF tools, and war map apps.
ESET tracked multiple campaigns since early 2025 each wave uses distinct C2 infrastructure.
Capabilities: SMS interception, call logging, file exfiltration.
Source: The Hacker News / ESET
Full analysis → https://t.co/Slr9YmI7KM
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Cisco SD-WAN Zero-Day
1/2: Cisco's 7th SD-WAN zero-day of 2026 is under active exploit.
CVE-2026-20245 enables unauthenticated root command execution on Catalyst SD-WAN Manager.
No patch available Cisco confirmed in-the-wild exploitation Thursday. 🔓
2/2: Seven zero-days in one product line over six months signals a deeply compromised attack surface.
Defenders: restrict SD-WAN Manager access to trusted IPs immediately. Monitor mgmt-plane for anomalous activity.
CISA notification likely imminent.
Full analysis → https://t.co/Slr9YmI7KM
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Poisoned WhatsApp, Slack, or SMS notifications can hijack Google Gemini voice assistant on Android no malicious app install required.
Researchers demonstrated smart home control via Google Home, initiating Zoom calls, and reading messages aloud, all triggered through crafted notification content.
Source: SecurityWeek
Full analysis → https://t.co/Slr9YmI7KM
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