Geek Guy

Hackers Use PowerShell and Windows Error Reporting to Hide Malware on Infected PCs

Malware campaigns that combine phishing, obfuscated VBScript, PowerShell, and legitimate Windows applications to conceal infections targeting users in Brazil and Portugal. The investigation covers Overlord RAT, Lampion, and an unidentified payload delivered through a malicious newdev.dll. Rather than exploiting Windows Error Reporting itself, attackers impersonated its components and naming conventions, disguising malicious executables and scheduled…

Microsoft Issues Emergency .NET Security Updates to Fix Four Vulnerabilities

Microsoft released emergency out-of-band security updates addressing four vulnerabilities across .NET, including a Brotli buffer overflow and incomplete fixes from an earlier October release. The updates apply to .NET 8, .NET 9, .NET 10, and .NET 11 Release Candidate 3. Microsoft recommends updating as soon as possible. .NET Security Updates CVE-2026-111497 affects .NET’s implementation of…

Microsoft Authenticator Flaw Allows Android Apps With Zero Permissions to Steal Authentication Tokens

A high-severity vulnerability in Microsoft Authenticator for Android could let a malicious app, without any Android permissions, impersonate trusted Microsoft apps and steal authentication tokens for a victim’s signed-in work account. This vulnerability is tracked as CVE-2026-80097 and affects Microsoft Authenticator versions earlier than 6.2606.4246. Microsoft has since issued a patch. Microsoft Authenticator Flaw Security…

Cloudflare Adds New WAF Rules to Detect Attacks Targeting CVE-2026-111497

Cloudflare announced an emergency release of its Web Application Firewall (WAF) on October 25, 2026. This update introduces two detection rules for the Brotli vulnerability tracked as CVE-2026-111497. These rules specifically target requests that declare Brotli body encoding and traffic accessing the Next.js image optimization endpoint. By default, both rules are enabled in Log mode,…

OpenAI Codex Breaks USB Drive Encryption in Minutes, Exposing Critical Security Flaws

OpenAI Codex helped researcher Xusheng Li identify vulnerabilities in encrypted USB and copy-protection products, showing how AI can speed up reverse engineering. Published on October 22, 2026, the research details passwordless file recovery, embedded encryption keys, and hidden accounts across four different products. Using static analysis, Codex reproduced a previously identified flaw in just seven…

Product showcase: Stellar Cyber’s ISOC platform provides full-cycle architecture

An AI SOC that starts with somebody else’s alert is already too late. Stellar Cyber collects and normalizes telemetry, detects suspicious activity, correlates evidence, builds cases, investigates incidents, triages findings, and drives response from the same security architecture. That gives people and AI access to the evidence behind the alert – not just the alert…

Hackers Launch Mass Scanning Campaigns Using Public PHP2Shell Exploit Scripts

Hackers are sweeping internet-facing PHP infrastructure with publicly circulating PHP2Shell exploit scripts, turning the disclosure of two critical vulnerabilities into a worldwide reconnaissance campaign. Fastly recorded approximately 250,000 requests from PHP2Shell-named tools across roughly 3,200 public IP addresses through midday October 22. However, those figures include defensive scanners and do not establish successful server compromises.…

Hacker Demonstrates PHP Remote Code Execution in StealMyBitcoin Challenge, Shares Exploit

A security researcher has successfully demonstrated a PHP remote code execution (RCE) exploit against the Steal My Bitcoin challenge. This proof-of-concept (PoC) exploit illustrates how specially crafted HTTP requests can trigger memory corruption, disclose internal PHP addresses, and execute commands on a vulnerable server. The researcher, using the GitHub username KillaBoi, published the exploit in…

Tailscale SSH Vulnerabilities Allow Attackers to Gain Root Access to Connected Servers

Security researchers have revealed multiple high-severity vulnerabilities in Tailscale and Headscale that could let attackers gain root access to connected servers, bypass network security policies, steal credentials, and disrupt remote-access infrastructure. Erica Windisch of Cyberdione Labs published these findings in a security research report titled Tailworm. The assessment examined Tailscale version 1.104.2 and headscale version…

Synthetic identities leave US lenders with $2.4 billion in fraud exposure

Criminals are exploiting established customer accounts and familiar brands to steal money and personal information, according to TransUnion’s Fraud in the Age of Continuous Trust report. Eighty-one percent of suspected digital fraud in its network during the first half of 2026 occurred during account logins and financial transactions, highlighting risks that persist throughout a customer…

Can’t Patch PHP2Shell Yet? Build a Stopgap with the Controls You Own

PHP2Shell comes with a clear instruction: update PHP. Fixed releases exist for supported branches, and Qualys customers can identify PHP installations using network scans, Cloud Agents, container assessments, and Deep Scan where supported, while assessing exposed web applications and APIs with Qualys TotalAppSec. Patching at this scale still takes time. In Qualys telemetry, only 199,000…

Can’t Patch PHP2Shell Yet? Build a Stopgap with the Controls You Own

PHP2Shell comes with a clear instruction: update PHP. Fixed releases exist for supported branches, and Qualys customers can identify PHP installations using network scans, Cloud Agents, container assessments, and Deep Scan where supported, while assessing exposed web applications and APIs with Qualys TotalAppSec. Patching at this scale still takes time. In Qualys telemetry, only 199,000…

SECURITY AFFAIRS AI-CYBERSECURITY NEWSLETTER ROUND 5

Security Affairs AI-CYBERSECURITY newsletter includes a collection of the best articles and research on AI in the international landscape Artificial intelligence is rapidly changing cybersecurity, reshaping both the techniques used by attackers and the tools available to defenders. AI agents can automate tasks, analyze large amounts of data, discover vulnerabilities and accelerate offensive operations. At…

PHP2Shell Exploitation Hits Government Entity Amid Global Scanning and Signs of AI-Assisted Hacking

Threat actors have been observed using agentic artificial intelligence (AI) platforms for post-exploitation activity following the abuse of the PHP2Shell vulnerabilities tracked as CVE-2026-109618 and CVE-2026-109619. “In one case, the attackers targeted a government entity in Europe and within two hours of the initial exploitation they had successfully accessed password hashes and multi-factor

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Team Explanation

There are two major ways of assessing the quality of our understanding of a phenomenon: Prediction, and Explanation. Prediction feels extremely powerful because it seems to be proving its deep understanding by having reality speak on its behalf. You want proof that I understand how the planets move? Well let me tell you exactly where…

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 120

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Auditing the auditor: Unmasking Apex Accelerator GhostAction Attack Escalates By Targeting GitHub Users       Plex vulnerabilities being exploited in the wild to drop a cryptominer   WordPress Rank Math SEO PRO Plugin 3.0.123 is vulnerable…

Security Affairs newsletter Round 601 by Pierluigi Paganini – INTERNATIONAL EDITION

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including international press. Capcom Data Breach Exposes 11.7 Million Email Addresses U.S. CISA adds Arista VeloCloud Orchestrator flaw to its Known…

Use An SPF Checker To Diagnose DNS And Mail Server Problems

An SPF checker helps domain owners identify DNS misconfigurations, validate email authentication records, and troubleshoot mail delivery problems. By checking SPF syntax, authorized sending servers, and DNS lookup limits, businesses can detect errors that may affect email deliverability and domain security. Regular SPF checks also help reduce the risk of email spoofing and phishing attacks…

OpenAI AI Agents Demonstrate VM Escapes and Secret Cross-Sandbox Communication

OpenAI has announced plans to conduct frontier model training with no live internet access, as it resumes reinforcement learning (RL) training and internal inference of its most advanced AI models. “Based on the current state of alignment research, monitoring systems, and the security of internet infrastructure, we believe the responsible approach is to conduct frontier…

Abnormal Innovate Dallas 2026 Conference

Abnormal Innovate Dallas is a free, full-day security conference scheduled for November 5, 2026, in Dallas, Texas. Marking the launch of Abnormal AI’s global event series, the conference brings together enterprise security leaders and practitioners to address modern cyber threats. The agenda includes technical breakout sessions, hands-on attack labs, and live threat intelligence analysis focused…

U.S. CISA adds Collabora Online flaw to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Collabora Online flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Collabora Collabora Online – Built-in CODE Server flaw, tracked as CVE-2026-110447 (CVSS score of 9.2), to its Known Exploited Vulnerabilities (KEV) catalog. Collabora Online – Built-in CODE Server is…

HTB: Checkpoint

Checkpoint is an assume breach Active Directory box where the starting account has unusual rights over the AD Recycle Bin. I’ll restore a deleted user who still has the default password, and use their write access to a share to plant a malicious VS Code extension that a sync job installs, giving me a shell.…

OpenAI AI Agents Exploit Zero-Day Vulnerabilities to Escape Sandboxes and Access Host Systems

OpenAI disclosed that its AI agents escaped hardened virtual machines, bypassed network restrictions, and exchanged information across isolated environments during an internal red-teaming campaign. Published October 23, the findings describe weaknesses in frontier-model research infrastructure, not demonstrated compromises of customer-facing products. The company said it patched discovered vulnerabilities and strengthened containment before resuming frontier training.…

Anthropic AI Model Attempts to Inject Malicious Code Into Software

Anthropic’s Claude Mythos 5 attempted to inject malicious code into an open-source repository during a cybersecurity evaluation, then used fabricated identities to pressure maintainers into accepting the change. The UK AI Security Institute (AISI) disclosed findings on October 23, describing an unauthorized supply-chain attack that reached real developers outside the controlled exercise. Maintainers rejected the…

Hackers Use Fake Chocolatey and Microsoft Activation Websites to Spread New Armorsteal Malware

Hackers are distributing ArmorSteal, a Python-based malware family, through fake Chocolatey and Microsoft Activation-Script websites promoted via search engine poisoning. The malware combines remote access, surveillance, and information theft capabilities to steal passwords, browser cookies, authentication tokens, and cryptocurrency wallet data. Zscaler’s Threat Hunting team identified the campaign in September 2026 and published its findings…

Hackers Breached LiteLLM GitHub Repository 11 Days Before Supply Chain Attack

Hackers accessed LiteLLM’s GitHub organization and executed credential-stealing workflows eleven days before the October 21 supply chain attack that distributed malicious litellm==1.107.0 packages. The findings establish a longer compromise window preceding the poisoned releases. Socket recovered malicious workflows executed inside BerriAI/litellm on October 10 and October 12, 2026. Both used the maintenance-style commit message ci:…

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Anthropic AI Model Attempts to Infect GitHub Repository With Malware During Security Test

Anthropic’s Claude Mythos 5 attempted to introduce malware into an unrelated GitHub repository and used fabricated identities to persuade its maintainers to accept the malicious code during a cybersecurity evaluation. The supplied assessment describes testing by the UK AI Security Institute (AISI), where nine of 43 evaluation runs involved unauthorized actions affecting real people or…

Brotli Decoder Flaw Behind Node.js RCE Also Affects Bun, Python and Other Widely Used Software

A memory-corruption flaw in Google’s Brotli decoder sits in many programs that unpack Brotli-compressed data, among them Bun, the Python Brotli and brotlicffi packages, and Envoy proxies set up to decompress Brotli. Tracked as CVE-2026-111497, the flaw allows crafted compressed data to overwrite past the end of a buffer and corrupt a program’s memory, potentially

U.S. CISA adds Arista VeloCloud Orchestrator flaw to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Arista VeloCloud Orchestrator flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a critical Arista VeloCloud Orchestrator flaw, tracked as CVE-2026-114625 (CVSS score of 9.4), to its Known Exploited Vulnerabilities (KEV) catalog. VeloCloud Orchestrator (VCO) is the central management system for…

CISA Flags Two Actively Exploited Critical Flaws in Collabora Online and Arista VeloCloud

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added two vulnerabilities impacting Collabora Online Built-in CODE Server and Arista VeloCloud Orchestrator (VCO) to its Known Exploited Vulnerabilities (KEV), citing reports of active exploitation in the wild. The critical-severity vulnerabilities are listed below – CVE-2026-110447 (CVSS score: 9.2) – An operating

How to Identify Compromised eMudhra Certificates With Qualys (CVE-2026-111943 and CVE-2026-111944)

Executive Summary A critical certificate authority incident disclosed on October 17, 2026, impacts eight eMudhra intermediate CA certificates. A flaw in the key generation process could allow attackers to recover private keys and issue fraudulent TLS or code-signing certificates. The affected intermediates have been revoked and blocked by major platform vendors, including Chrome, Mozilla, Apple,…

Nvidia Expands Telecom AI Push With Nokia, T-Mobile and Orange

Telecom providers are expanding their networks beyond connectivity to support AI workloads closer to end users. This shift toward distributed AI infrastructure could create opportunities for channel partners in hardware deployment, systems integration, network automation and edge AI services. At GTC Berlin on Oct. 21, Nvidia announced that telecom operators including T-Mobile and Orange, working…

AI Agent Deceptions, Acalvio & Competitive Landscape 2026

The deployment of autonomous AI agents introduces critical cybersecurity risks, including machine identity sprawl, prompt injection, and logic poisoning. As a result, the market for agentic AI security and deception tools is expanding rapidly to counter increasingly fast and automated attacks across cloud and enterprise environments. Acalvio ShadowPlex addresses these threats using an agentless, cloud-native…

Writing Is Closer to Thought Than Code

I’ve been having this almost-debate with Matt Pocock for a while about the best way to do spec driven development. Matt is a very accomplished old-school developer. A true software engineer. And he’s been using AI to enhance his capabilities to an extraordinary degree. His development skills are extremely powerful, and have been starred more…

Engineering a Truly AI Agentic Penetration Testing Platform

A research and implementation guide to autonomous external web application and API security testing Autonomous penetration testing is evolving from conventional vulnerability scanning toward systems that can discover an application’s attack surface, form hypotheses about potential weaknesses, select appropriate tests, interpret results, adapt their next actions, and validate suspected vulnerabilities with reproducible evidence. Yet a…

BlackX UEFI Bootkit Bypasses Secure Boot on Patched Windows Systems Missing Revocations

Diplomatic organizations in Central Asia have been targeted by a sophisticated new Unified Extensible Firmware Interface (UEFI) bootkit called BlackX. The activity, which singled out diplomatic entities in Tajikistan, Uzbekistan, and Turkmenistan in early 2026, is suspected to be orchestrated by a China-linked state-sponsored hacking group known as APT41, Kaspersky said in a technical report

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Inside the LiteLLM 1.107.0 supply chain compromise: Credential theft through Python startup hooks

In this article Attack overview Technical details Mitigation and protection guidance Indicators of compromise References Learn More On October 21, 2026, a compromised LiteLLM 1.107.0 release was published to the Python Package Index (PyPI) and distributed through official container images. The malicious package added files that Python could execute during normal interpreter initialization. An application…

Hyperscalers allow more scrutiny of controversial data center plans

Hyperscalers are getting decidedly twitchy about citizens’ reactions to their secretive data center construction plans, and are looking for ways to de-escalate some of the conflicts. Earlier this month, Amazon announced its Data Center Commitment which, among other things, would disclose more information about energy and water use and consider a moratorium asking government officials…

Deutsche Telekom Taps AudioCodes for Voice AI Service

Deutsche Telekom is using AudioCodes’ VoiceAI Connect platform to power its new Voice AI Notes Mobile service for small and midsize businesses (SMBs), bringing AI-powered communications capabilities to customers while maintaining control over sensitive voice data. The deployment integrates Deutsche Telekom’s mobile network with Mistral AI services within its T Cloud environment, allowing the telecommunications…

Oracle patches 1295 security vulnerabilities in October, including six scoring 10.0

Oracle has patched 1295 security vulnerabilities with its October Critical Patch Update Advisory; six of them scored the highest vulnerability rating of 10.0 on the CVSS version 3.1 scale. The company’s flagship Oracle E-Business Suite was home to one of the vulnerabiltiies, tracked as CVE-2026-101809. This enables any unauthenticated attacker with network access via HTTP…