Daily threat intelligence and vulnerability analysis from our security team. We publish expert breakdowns of critical CVEs, active exploits, and emerging attack campaigns as they happen.
Our analysts monitor vendor advisories, CISA alerts, and underground threat activity to give you actionable guidance you can use the same day. Filter by severity below to find what matters most to your environment.
Updated October 4, 2026 — all 221 published advisories are browsable here. The four drawing the most attention right now: a Cisco Catalyst SD-WAN Manager flaw that hands an attacker full admin control of your wide-area network with no password (CVE-2026-76504, rated 9.8 out of 10) — there is no workaround, the CISA federal deadline passed on October 3, and one compromised manager pushes settings to every branch router you own, so upgrade and then check the logs; a FortiMail email-gateway flaw being exploited before any fix exists (CVE-2026-104286) — there is no patch yet, so affected systems rely on Fortinet’s workaround; two Citrix NetScaler flaws exploited for weeks before the September 27 fix (CVE-2026-88771 and CVE-2026-88772) — a patched box can still be hosting a webshell (a hidden back door left behind in the software itself); and a Roundcube webmail flaw that lets an attacker tamper with the mail database before anyone logs in (CVE-2026-48842), still exploited because it ships inside hosting control panels most firms forget they run. Three of the four were attacked before most owners heard about them, so what decides the cost is how fast someone notices. If you are not sure who is reading the alerts at 2 a.m., our 24/7 staffed security operations center handles the detection and the response.
Two Chrome Featured extensions, QuickLens and ShotBird, turned malicious after ownership transfer. Attackers stripped security headers, injected C2 payloads via 1x1 pixel images, and deployed ClickFix-style attacks for full endpoint compromise. Extension supply chain attacks are accelerating.
Iranian APT MuddyWater deploys Dindoor backdoor against US banks, airports, and defense contractors using Deno JavaScript runtime. Detect and defend.
Read moreCritical Veeam Backup flaw lets attackers delete backup repos without credentials. Ransomware gangs exploiting CVE-2026-29849 to eliminate recovery options.
Read moreCISA confirmed active exploitation of CVE-2017-7921 (Hikvision cameras) and CVE-2021-22681 (Rockwell Automation controllers), both CVSS 9.8. Federal agencies must patch by March 26, 2026. Legacy vulnerabilities remain potent weapons in attacker arsenals.
Read moreCISA added CVE-2026-22719 (CVSS 8.1) to the Known Exploited Vulnerabilities catalog after confirming active exploitation. The command injection flaw in VMware Aria Operations allows unauthenticated RCE. Federal agencies must patch by March 24, 2026.
Read moreAkamai confirms APT28 (Fancy Bear/GRU) was actively exploiting CVE-2026-21513 (CVSS 8.8) in the MSHTML Framework before Microsoft's February patch. The attack uses crafted LNK files to bypass Mark-of-the-Web and execute malicious payloads as trusted local content.
Read moreAkamai confirmed Russia's APT28 was exploiting CVE-2026-21513 in Windows MSHTML before Microsoft released the February patch. The attack chains crafted LNK files to bypass Mark-of-the-Web and IE Enhanced Security, delivering payloads without user interaction.
Read moreShadowserver reports 900+ Sangoma FreePBX instances worldwide remain infected with web shells exploiting CVE-2025-64328 (CVSS 8.6). The INJ3CTOR3 threat actor deploys EncystPHP web shells for command execution and fraudulent outbound calls. US leads with 401 compromised systems.
Read moreZscaler ThreatLabz discovered ScarCruft (APT37) running the "Ruby Jumper" campaign that bridges air-gapped networks using weaponized USB drives. The operation abuses Zoho WorkDrive for C2 and deploys multiple malware families including THUMBSBD, FOOTWINE, and BLUELIGHT for surveillance and data exfiltration.
Read moreCisco disclosed CVE-2026-20127 (CVSS 10.0), an authentication bypass in Catalyst SD-WAN that sophisticated threat actor UAT-8616 has exploited since 2023. The attack chain creates rogue peers, downgrades software to exploit older CVEs, and achieves root persistence. CISA issued Emergency Directive 26-03 requiring 24-hour patching.
Read moreFormer L3Harris contractor Peter Williams sentenced to 87 months for selling eight zero-day exploits to Russian broker Operation Zero for $4 million. The U.S. government simultaneously sanctioned Operation Zero, its leader Sergey Zelenyuk, and connected entities for acquiring cyber tools harmful to national security.
Read moreAnthropic revealed that DeepSeek, Moonshot AI, and MiniMax ran industrial-scale distillation attacks using 24,000 fraudulent accounts to systematically extract Claude's reasoning, coding, and agentic capabilities across 16 million exchanges. Google disclosed similar attacks on Gemini weeks earlier.
Read moreAmazon Threat Intelligence reveals a Russian-speaking actor with limited skills compromised 600+ FortiGate devices using DeepSeek and Claude. The campaign exploited exposed management interfaces and weak credentials, demonstrating how AI has democratized sophisticated attack capabilities.
Read moreAmazon Threat Intelligence documents a Russian-speaking threat actor who compromised 600+ FortiGate devices across 55 countries using AI-assisted tools. No zero-days were exploited—just exposed management interfaces and weak credentials, with generative AI helping an unsophisticated attacker scale their operations.
Read moreUnit 42 documents active exploitation of CVE-2026-1731 (CVSS 9.9) in BeyondTrust Remote Support and PRA. Attackers are deploying web shells, VShell, Spark RAT, and exfiltrating PostgreSQL dumps. CISA confirms ransomware campaigns are leveraging this vulnerability.
Read moreESET researchers discovered PromptSpy, an Android malware that uses Google's Gemini AI to dynamically navigate device interfaces and maintain persistence. The malware sends screen captures to Gemini, which responds with tap instructions, effectively solving Android fragmentation for attackers.
Read moreA maximum-severity zero-day in Dell RecoverPoint for Virtual Machines (CVSS 10.0) has been exploited by Chinese state-sponsored hackers since mid-2024. The flaw involves hard-coded Tomcat credentials enabling root access. CISA has added it to the KEV catalog with a 3-day patch deadline.
Read moreFour of the most popular VS Code extensions with over 125 million combined installs contain critical vulnerabilities that could let attackers steal files, execute code, and compromise entire organizations from a developer workstation. Three remain unpatched.
Read moreGoogle released emergency updates to patch CVE-2026-2441, a high-severity use-after-free vulnerability in Chrome's CSS handling that attackers are actively exploiting. All Chromium-based browsers are affected.
Read moreGoogle patches CVE-2026-2441, a high-severity use-after-free in Chrome actively exploited in the wild. This is Chrome first zero-day of 2026. Update immediately.
Read moreOur CyberOne MobileAssess platform performs deep static analysis, source code decompilation, and runtime security testing for iOS and Android apps. From one-time assessments to year-long continuous testing, we find what surface-level scanners miss.
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