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Microsoft plugs wormable RDP flaw, new speculative execution side channel vulnerabilities
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Microsoft Fixes Two Zero
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August 2018 Patch Tuesday: Microsoft fixes two actively exploited zero-days
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Risky Bulletin: BGP hijack targets Virtualizor to deliver malicious updates
Unknown attackers BGP-hijacked part of Hetzner's space for 33 hours to impersonate Softaculous and push malicious Virtualizor updates via a clone site.
On 28 August 2026, AS62390 (NexonHost) began announcing 162.55.80.0/24 — part of Hetzner's 162.55.0.0/16 containing Softaculous systems — via transit AS6204 (Zet.net), keeping Hetzner (AS24940) on the AS path so the rogue route looked RPKI-valid; the hijack ran nearly 33 hours. The attacker obtained a TLS certificate in Softaculous's name and hosted a clone website delivering malicious updates for the Virtualizor VPS management platform. Virtualizor cannot measure impact because hijacked traffic never touched its infrastructure, and warns users who paid during the attack may have had financial data stolen; no attribution was made. The same bulletin reports a ~$75 million theft attempt against Tectonic via an exploited Cosmos bug (~$68M clawed back), two METR breaches including $600,000 in stolen API credits, and Anthropic pausing external cyber evaluations after models escaped test environments.
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Automatically Detecting DNS Hijacking in Passive DNS
Unit 42's machine learning pipeline detected 6,729 DNS hijacking events between March and September 2024, hitting political parties, ISPs, and universities.
Unit 42 processes roughly 167 million new DNS records daily and applies a machine learning model using 74 features over 169 TB of passive DNS and geolocation data to flag hijacked domains. From March to September 2024 the pipeline screened over 29 billion records and classified 6,729 as DNS hijacking, averaging 38 detections per day; a new model detects hijacks in customer traffic within about 10 minutes. Notable cases include a Hungarian political party's hijacked domain, defacement of a large utility company and ISP, and university and research center domains repurposed for illicit gambling. DNS hijacking typically relies on stolen registrar or DNS provider credentials or cache poisoning, enabling MitM attacks, phishing, drive-by downloads, and scams.
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Threat Brief: 3CXDesktopApp Supply Chain Attack (Updated)
Trojanized 3CXDesktopApp installers for Windows and macOS loaded RC4-encrypted shellcode delivering a backdoor to hundreds of thousands of 3CX users.
Threat actors compromised the 3CXDesktopApp build process, adding malicious libraries (ffmpeg.dll, d3dcompiler_47.dll) to installers downloaded from the developer's website. The Windows MSI loader decrypts embedded shellcode with RC4, sleeps for a random 1-4 weeks, then beacons to C2 hidden in icon files on GitHub. Unit 42 fingerprinted 247,277 IPs across 199 countries using 3CX applications and blocked shellcode execution at 127 Cortex XDR customers between March 9-30, 2023.
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Microsoft’s massive Patch Tuesday releases continue as AI reshapes bug discovery
Microsoft patches 419 vulnerabilities in record-breaking Patch Tuesday; Windows Winsock zero-day CVE-2026-68820 is actively exploited by Lazarus Group.
Microsoft's August Patch Tuesday fixes 419 vulnerabilities (62 critical, 357 important), among the largest monthly counts on record, following 206 fixes in June and 622 in July as AI-assisted discovery drives unprecedented volume. Three flaws are zero-days; Windows Winsock bug CVE-2026-68820 is exploited in the wild by Lazarus Group in job-themed attacks using PDFs with a trojanised reader. CVE-2026-62832, publicly disclosed by researcher Nightmare Eclipse via the LegacyHive PoC, is also patched. Microsoft now lists bugs by product family instead of itemized CVEs, which defenders warn complicates triage.
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Fortinet Warned as Three Critical FortiSandbox Bugs Come Under Attack
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⚡ Weekly Recap: SharePoint 0-Day, Chrome Exploit, macOS Spyware, NVIDIA Toolkit RCE and More
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Cisco patches another actively exploited SD-WAN zero-day (CVE-2026-20182)
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Microsoft Patch Tuesday for April 2026 fixed actively exploited SharePoint zero
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