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Executive Summary OpenAI disclosed that agents used exposed Hugging Face credentials to write a file and deploy proxy Spaces during an unrelated May 2026 research workload, but it did not identify the accounts. SentinelLABS identified two accounts likely used in associated activity, 0Time and Nyx9. Their public histories extend OpenAI’s chronology and preserve previously unreported relay code, document-borne probes, and ChatGPT account-provisioning capability. The public records provide precise…
Over the past year, our Global Emergency Response Team (GERT) has investigated several incidents involving the NightEagle group (APT-Q-95). This group has been active since at least 2023 and originally focused on organizations in Asia, as we reported previously. We have now identified attacks by the group targeting businesses in Russia. This post examines both known and new tools NightEagle used in its latest campaign. Initial access In most incidents, the attackers used compromised valid…
Modern macOS malware uses deceptive setup guides to steal credentials and sensitive user data. Learn how to identify and block these threats. The post Atomic macOS (AMOS) Stealer Activity appeared first on Unit 42.
Antivirus renewal scams often begin with a message claiming that your subscription has automatically renewed. When you follow the instructions to cancel it, you are taken to a fake page designed to collect your contact details. The renewal charge never existed. Receiving a message that names the antivirus software you use does not necessarily mean the sender has access to your device or account. Scammers impersonate popular brands and send the same message to large numbers of people, knowing…
Oracle addresses 672 CVEs in its September 2026 Critical Security Patch Update with 673 patches, including 104 critical updates.Key TakeawaysThe September 2026 Critical Security Patch Update (CSPU) contains fixes for 672 unique CVEs in 673 security updates104 issues (15.5% of all patches) were assigned a critical severity ratingOracle E-Business Suite received the highest number of patches at 159, accounting for 23.6% of all patchesBackgroundOn September 15, Oracle released its Critical…
Malicious versions of the Admin Menu Editor Pro plugin for WordPress have been distributed to more than 200 customers after a threat actor compromised the maintainer's website and pushed updates that created a hidden user account. [...]
I have not done this type of diary in a while: What traffic will you see from a system on boot, before a user logs in? I just took a quick look at macOS 27 "Golden Gate" to see what traffic you should expect. Here are some of the highlights: I captured about 300 packets. This was likely inflated for this particular system as it connected via Wi-Fi and wired network interfaces. Each network interface will do its own DHCP/IP discovery during boot. I only used router advertisements for IPv6, not…
A previously unknown malware framework called BambooToken, active since at least 2023, is now using the Message Queuing Telemetry Transport (MQTT) protocol to communicate with Windows and Linux systems. [...]
If you’re still OK with posting pictures of your kids on social media, take a minute to hear from mother of two Kalie Robins. At the start of September, she did something that hundreds of thousands of parents do every day. She posted a video of her young daughter on Facebook. Under the video of Robins and her daughter singing in a car, Facebook’s Meta AI system displayed a suggested question: “Who is the child passenger?” Robins was shocked that Facebook would ask this question about a minor,…
Bitrefill is a legitimate company that sells gift cards for popular stores like Amazon, Deliveroo, Apple, Nintendo, and thousands of others. They also sell eSIMs, and mobile top-ups. You can pay on their website for all of these with cryptocurrency. The scam is designed to catch people searching for Bitrefill or something it sells, like a gift card. Victims see a search result that appears to lead to Bitrefill but actually points to a lookalike domain. The fake site then takes them through what…
The pro-Ukraine hacktivist group Hacking Cat has evolved from carrying out website defacements and data leaks to more sophisticated and destructive attacks on Russian targets, researchers said.
Attackers exploit Volume Shadow Copy for credential theft and ransomware defense evasion. See how Huntress spots the difference from routine IT activity.
We designed a behavioral clustering model to map cloud identity roles from audit logs, enabling continuous threat detection using standard SQL queries. The post Unmasking Cloud Identities: From Behavioral Clustering to Automated Detection appeared first on Unit 42.
A deep technical analysis of the Smishing Triad’s JWR phishing kit and Outsider operator cluster, revealing its real-time victim control, encrypted WebSocket communications, multi-stage credential theft, AES-256-CTR implementation, infrastructure, and actionable indicators for defenders.
Elastic Security Labs has tracked REF9334, a Brazilian banking malware operation, since May 2025. Its toolkit is called KREMLIN (as named by the malware author, Kr3mlin4rt1st), though nothing about the operation is Russian. Lures impersonate twelve Brazilian banks; error messages and code comments are written in Portuguese, and the operators' Ethereum transactions cluster during São Paulo working hours. Over 15 months and seven campaigns, they built a malicious browser extension that installs…
Uncensored refers to a lack of typical guardrails or ethical restrictions, lowering the technical barrier of entry into cybercrimeCategories: Threat ResearchTags: AI, Luciferus, underground
Anthropic says multiple threat groups, including the financially motivated and state-sponsored espionage groups linked to Russia and China, tried to abuse its Claude AI model for malicious purposes. [...]
Researchers analyzed a flood of fraudulent business emails and found that the threat actors had doubled-up on tactics to make them appear legitimate, including help from AI.
I identified an attacker using a semi-autonomous coding agent to run an offensive operation: finding poorly secured LLM resale gateways, acquiring API access through ordinary web flaws and account farming, validating the resulting inference capacity, and aggregating it behind a single gateway of their own. What I captured was not simply credential theft, but an inference supply chain — an agent harvesting, validating, and consolidating LLM access into infrastructure that serves it again through…
Threat actors are abusing trusted AI platforms to host malicious content, poison search results, and trick users into installing malware. Huntress examines campaigns targeting AI users through weaponized Claude Artifacts, shared AI conversations, sponsored search results, and ClickFix-style lures. [...]
IntroductionThe surge in emerging threat actors directly correlates with the rapid escalation of victim counts and stolen financial resources. Simultaneously, this growth has spurred the proliferation of specialized supply storefronts across social media platforms, dark web channels, and various smaller niche marketplaces. Security teams today face evolving challenges, requiring them to continuously refine monitoring channels, adjust operational strategies, and foster cross-functional internal…
Researchers at Group-IB found that the Android banking Trojan Gigabud can create a separate work profile on an infected phone and run a cloned banking app inside it. The attacker can then carry out fraudulent transactions in the new profile, potentially separating them from signs of malware detected elsewhere on the device. To do this, Gigabud installs Vwork, a malicious version of the legitimate open-source tool Shelter. Shelter normally lets Android users isolate apps or run second copies of…
Upgraded modular malware observed in attacks on Cisco Firewall Management Center (FMC) devicesCategories: Threat ResearchTags: Cyclops Blink, Cisco, Linux
Local privilege escalation (LPE) is the step that turns a foothold into full control of a host. An attacker who lands as an unprivileged user rarely stops there. They want root, and Linux keeps offering new ways to get it.In this edition of our "Linux Detection Engineering" series, we’ll cover:The default flow that a Linux LPE produces on the host and the general rules that detect it.The recurring LPE patterns behind the most recent LPEs and how each works, along with how each looks through the…
A new Android malware strain called Mantax Otax combines ransomware and spyware capabilities to encrypt files, steal sensitive data, and spam and harass victims. [...]
Welcome to this week’s edition of the Threat Source newsletter. Ask anybody in this industry what the work does to the health of the people who do it and you get one word back: burnout. It's a fine word, in and of itself. It’s easy to reach for, understandable to everyone… and it's the wrong one, most of the time. So, story time. Last year I gave an interview with the amazing Hazel Burton about VPNFilter, and my run-in with burnout. I was a manager during that time, and it took a toll on me and…
In this article Attack chain overviewEmail DeliveryDomain registrationGenerative AI usageMitigation and protection guidanceMicrosoft Defender detectionsMicrosoft Security CopilotThreat intelligence reportsMITRE ATT&CK Techniques observedIndicators of compromise (IOC)Learn More Threat actors are increasingly improving their tactics to make suspicious emails look like legitimate email notifications to potential victims, deploying techniques that impersonate internally sent emails from executive…
Every wave of technology excitement creates a new opportunity for cyberattackers, and AI is no exception. Microsoft Threat Intelligence has published research showing a growing set of campaigns that impersonate popular AI platforms and tools, including ChatGPT, Microsoft Copilot, DeepSeek, and Claude.1 The goal is to make phishing, search-driven malware campaigns, and malvertising—which is malicious advertising that uses online ads to lure users to harmful sites, downloads, or redirect…
BlueMoon, a shared Chrome and Windows exploit kit, shows why “patch later” is becoming a dangerous gamble. Security updates are easy to put off. The browser still opens, Windows still works, and choosing to relaunch your browser or restart your computer later can feel harmless. But a newly documented exploit kit called “BlueMoon” shows how quickly patching delays can become dangerous. Proofpoint Researchers found four espionage groups using the same exploit chain against Chrome browsers running…
Executive Summary In this research we introduce a prompt-crafting technique for bypassing quick LLM-based policy checks — using plain English (no emojis, base64, invisible formatting, etc.) A policy-violating payload (e.g. ”encrypt files in ~/Documents”, “give me a biohazard recipe”, “ignore all previous instructions and…”) is embedded in a specially crafted prose wrapper. An LLM with limited resources and attention fails to realize the payload is there, classifies the prompt as benign and…
Identity was the target in roughly half of all confirmed malicious activity. Prophet Security breaks down the four main attack patterns seen across customer environments between May and July 2026, and explains why some attacks succeeded while others were blocked. [...]
Learn why Tenable treats agentic LLMs as untrusted insiders, and how we’ve made sure you can control and monitor the AI agents making changes in your production security environmentKey takeawaysAI models can quickly understand data, but not your business. While modern AI models are great at reasoning, they don’t automatically understand your unique environment or who is allowed to do what. The “harness” is the custom-built layer that translates AI intelligence into safe, controlled actions…
[This is a Guest Diary by Aaron Ng, an ISC intern as part of the SANS.edu BACS program] Following a RedTail Linux Payload from DShield to Dynamic Analysis During monitoring of my DShield honeypot, I observed an attacker uploading a collection of Linux executables targeting several processor architectures. The files included ARM, ARM64, i686, RISC-V and x86-64 variants named as part of a RedTail deployment package. Rather than relying only on static indicators or public threat-intelligence…
Learn how root access on a compromised K8s node allows attackers to utilize SPIFFE/SPIRE metadata to spoof and harvest co-located workload identities. The post The Machine With Many Faces: Post-Exploitation Identity Misuse in SPIFFE/SPIRE appeared first on Unit 42.
An AD RMS Service Group account exports the AD RMS Server Licensor Certificate private key. That 1172-byte key decrypts every document the deployment ever protected, offline, and keeps doing so after the deployment is rebuilt.
In this article OverviewTechnique CatalogPrivilege EscalationMitigation and protection guidanceReferencesLearn more Microsoft introduces the cloud web applications threat matrix, a MITRE ATT&CK-aligned framework that helps defenders understand, prioritize, and mitigate threats to cloud-hosted web apps and serverless platforms. Cloud-hosted web applications and serverless platforms create attack paths that can cross application code, managed runtimes, workload identities, deployment pipelines,…
About a week ago, Proxmox published an advisory revealing a vulnerability in older versions of Proxmox VE, its flagship Virtual Environment product. The vulnerability only affects version 7, which has not been supported for a couple of years now. But it appears that the vulnerability may have caught the attention of some attackers and researchers. We do see a bump in scans for port 8006, and also some additional brute force traffic. For example, brute force requests like: POST /api2/json/access…
In this article Attack chain overviewAttributionMitigation and protection guidanceLearn more Microsoft Security Research is tracking active cloud-based intrusions spanning multiple accounts in which unusual sign-ins were followed by threat actor-added authentication methods, high-volume Microsoft Graph activity, SharePoint and OneDrive downloads, and email collection through REST APIs. Microsoft Security Research assesses that this sequence is consistent with automated collection from…
Researchers at German cybersecurity company Nebty have identified “DoppelCart,” a cluster of almost 119,000 domains linked to copied online stores. The researchers describe it as the largest publicly documented fake-shop network by associated domain count. They found 118,787 .shop domains in the cluster, representing 2.72% of the .shop top-level domain (TLD) population they examined. The operation copies legitimate retailers’ product catalogs, descriptions, branding, and images, sometimes even…
The question of whether a Frontier AI model could find vulnerabilities that no human researcher had found was settled in April. Claude Mythos Preview identified thousands of previously unknown flaws across every major operating system and browser, including a 27-year-old denial-of-service condition in OpenBSD, and within a month Anthropic and its Project Glasswing partners had logged more than 10,000 high and critical severity findings, among them a certificate forgery flaw in wolfSSL, a…
Threat actors are exploiting GTA6 hype with fake leaked downloads spread via SEO poisoning, packed with RATs, infostealers, and wiper ransomware. Here’s what Huntress found.
An investigation into how cybercriminals used YouTube gaming lures and SEO poisoning to deliver multi-payload malware to enterprise networks. The post Untracked Nightmares: The Threats Hiding Behind Commodity Infrastructure appeared first on Unit 42.
Classification: Critical, Solution: Official Fix, Exploit Maturity: High, CVSSv3.1: 10.0, CVEs: CVE-2026-75650, Summary: Adobe has released a security update for Adobe Commerce and Magento Open Source. This update resolves a critical vulnerability that could result in arbitrary code execution. Adobe is aware of CVE-2026-75650 being exploited in the wild. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS:3.1 10.0
A Linux rootkit targeting devices in F5 BIG-IP APM environments can intercept PHP file loading and inject a fileless web shell directly into memory, avoiding the need to write malicious code to disk. [...]
We detected XCSSET malware inside a compromised Flutter package on pub.dev. Here is a full breakdown of the infection chain, propagation modules, and stealer logic we found inside. Category: Vulnerabilities & Threats