Linux Backdoor Abuses STUN Protocol, Exploits Dozens of Flaws

FortiGuard Labs uncovered ClingSTUN, a Linux backdoor that turns infected devices into STUN-based proxies and includes exploits for self-propagation across many vulnerable products. It also uses persistence, architecture-specific payloads, and remote command capabilities while abusing legitimate public STUN servers for NAT connectivity. #ClingSTUN #FortiGuardLabs #STUN #Avtech #EnGenius #DLink #Ivanti #TPLink…

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Google Narrows Open Source Bug Bounty Amid Wave of Invalid Automated Reports

Google has temporarily paused product vulnerability submissions to its Open Source Software Vulnerability Reward Program after a surge in automated reports, most of which were invalid. The pause does not affect supply chain reports or pending submissions, and Google plans to provide an update in Q1 2027. #Google #OSSVRP #CloudVRP #PatchRewardsProgram…

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Fake brand discounts on social media prey on shoppers’ fear of missing out – Help Net Security

Group-IB has warned that cybercriminals are using fake discount ads on Facebook and TikTok to drive shoppers to phishing sites that steal payment card details and one-time passwords. The Milk Dragon phishing kit, also known as NaiLong, has linked thousands of fake shopping pages across 66 countries by impersonating brands such as LEGO, Calvin Klein, and Aeon Malaysia. #GroupIB #MilkDragon #NaiLong #Facebook #TikTok #LEGO #CalvinKlein #AeonMalaysia

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CISA flags new exploited NetScaler flaw as attackers crash appliances (CVE-2026-88779) – Help Net Security

CISA has added CVE-2026-88779, a Citrix NetScaler memory overflow flaw, to its Known Exploited Vulnerabilities catalog after reports of targeted attacks causing denial of service and repeated crashes on vulnerable appliances. Citrix says the issue affects service availability on on-prem deployments using SAML with Gateway or AAA functionality, while advisories urge upgrades, IOC checks, and use of Global Deny List signatures. #CVE-2026-88779 #Citrix #NetScaler #CVE-2026-88771 #CVE-2026-88772 #watchTowr #BishopFox #Geico

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The US needs a real plan to defend its water systems

Iranian hackers’ attacks on water systems in 12 U.S. states exposed serious weaknesses in America’s critical water infrastructure and showed how a broader campaign could trigger a nationwide public health crisis. The article argues that the U.S. must urgently strengthen defenses with zero-trust architecture, formal methods, and AI-enabled cybersecurity support for utilities of all sizes. #IranianHackers #WaterSystems #ZeroTrustArchitecture #VoltTyphoon #ClaudeMythos

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AI slop submissions force Google to freeze its open-source bug bounty – Help Net Security

Google has stopped accepting new product vulnerability reports through its Open Source Software Vulnerability Reward Program after a surge of automated, AI-generated submissions overwhelmed reviewers. Reports submitted before October 1 remain valid, and researchers are being redirected to other reward programs while Google plans an update in Q1 2027. #Google #OSSVRP #CloudVRP #PatchRewardsProgram

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doxx.net opens Agentic Defined Networking public beta, raises  million – Help Net Security

doxx.net has launched the open beta of its Agentic Defined Networking (ADN) platform, giving users and AI agents a private, serverless network with built-in threat protection and no personal information required. The company also announced $38 million in Series A funding led by Andreessen Horowitz to expand its parallel, sovereign internet for private browsing, direct communications, and agent-driven networking. #doxxnet #AgenticDefinedNetworking #AndreessenHorowitz #BarrettLyon

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Apple tightens macOS disk access as AI agents become more powerful – Help Net Security

Apple plans new Full Disk Access controls in macOS to reduce privacy risks as AI agents become more autonomous, requiring users to take explicit action before granting apps this permission. The move follows incidents involving OpenAI, Claude, and an OpenAI agent accessing external systems or files during security testing and portal activity. #OpenAI #Claude #HuggingFace #Medicare

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Exploitation of Citrix NetScaler Zero-Day Hits Appliances Patched Days Earlier

Citrix NetScaler administrators rushed to respond after a new zero-day, CVE-2026-88779, was actively exploited against NetScaler ADC and NetScaler Gateway deployments configured as SAML SP or SAML IdP. Citrix and security researchers also linked the activity to prior exploited flaws and suspicious attack tooling that may have included malware delivery and…

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Citrix patches NetScaler SAML zero-day exploited in attacks

Citrix has released emergency updates for CVE-2026-88779, a zero-day NetScaler memory buffer flaw that is being exploited in targeted attacks to cause denial of service, with researchers also probing whether it can lead to remote code execution. The issue affects NetScaler ADC and NetScaler Gateway appliances using SAML authentication, and CISA has added it to its Known Exploited Vulnerabilities catalog. #Citrix #NetScaler #CVE-2026-88779 #CISA

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Threat Research | Weekly Recap [04 Oct 2026]

Cybersecurity Threat Research ‘Weekly’ Recap. Attackers abused fake installers, developer-platform lures, and AI-driven tooling to deliver loaders and steal credentials, including campaigns tied to Silver Fox, GlassWorm, JSCEAL, TA419, Remcos, and Vidar. Alongside these tradecraft shifts, the roundup highlighted active zero-day exploitation in Citrix NetScaler and PaperCut MF, plus supply-chain and exposed-credential risks involving MALFEX and leaked GitHub datasets.
#SilverFox #GlassWorm #JSCEAL #TA419 #Remcos #Vidar #CitrixNetScaler #CVE-2026-88771 #CVE-2026-88772 #PaperCutMF #AdaptixC2 #MALFEX #TIKTOUK #Jewelbug #Warlock

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The US needs a real plan to defend its water systems

President Donald Trump named Jay Clayton to lead a new government task force on artificial intelligence called the “Super Intelligence Force.” The group will coordinate federal efforts and engage with industry, consumers, and critical infrastructure providers to advance US leadership in AI. #JayClayton #DonaldTrump #SuperIntelligenceForce…

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