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Hazmat: Open-source containment for AI agents
Hazmat: Open-source containment for AI agents Hazmat is an open-source tool that runs AI coding agents inside a separate account on your own machine. It wraps the harnesses people use: Claude Code, Codex, OpenCode, Cursor Agent, and several more, plus any script you write yourself. An agent launched the ordinary way runs as you, which means it can read anything you can read. That includes SSH keys, cloud credentials, and the pile of configuration in your home directory that has accumulated over years. Hazmat gives the agent a home of its own and shares only the project directory you point it at. Your keys and credential folders sit outside what the session can reach. Read the terms before the agent starts Before anything launches, one command shows you the terms of the session. It lists the directory the agent can write to, the paths it only gets to read, whether it can reach the network or any services, and whether a backup runs first. Take the ten seconds and read it. That printout is the last moment you get a look at what the agent can touch, and everything after it happens while you are not watching. On macOS the launch does four things in order: back up the project, build a sandbox policy for that one session, switch to the agent account, then start the harness. A firewall rule is already in force by then. Linux runs natively, and a backend using Apple’s container tooling sits behind an experimental flag. A demo you can run yourself You can test the boundary in about a minute. A demo script creates a throwaway project, switches networking off, and runs a single contained command that writes a file into that project and reaches for a private key in your real home directory. The write lands. The key comes back unreadable, and the comparison afterward lists one new file in the project and nothing else touched. About 5.5 percent of the code is a formal specification written in TLA+, a language for describing how a system should behave so the description can be checked by machine. The project calls its design verified on that basis. What got checked is the containment model on paper, and the Go binary you install is a separate piece of work with its own bugs. Hazmat is available for free on GitHub. Must read: 20 open-source cybersecurity tools to keep your team ready for anything GitHub CISO on security strategy and collaborating with the open-source community Subscribe to the Help Net Security ad-free monthly newsletter to stay informed on the essential open-source cybersecurity tools. Subscribe here!
helpnetsecurity.comAug 17, 2026extracted
Critical SimpleHelp flaw exploited to deploy new stealer malware
Hackers are exploiting a recently disclosed critical vulnerability (CVE-2026-48558) in SimpleHelp to deploy Djinn Stealer, a previously undocumented cross-platform information stealer targeting Windows, macOS, and Linux. The SimpleHelp platform is primarily used by managed service providers (MSPs), IT departments, helpdesks, and system administrators for remote monitoring and management (RMM). Earlier this month, offensive security company Horizon3.ai published details about CVE-2026-48558, saying that the flaw could be leveraged to create highly privileged technician accounts without authentication. Exploiting the vulnerability is possible on servers using the OpenID Connect (OIDC) authentication protocol. According to the researchers, around 1,000 SimpleHelp servers exposed online were running a vulnerable configuration at the time of the disclosure. In an incident investigated by managed detection and response (MDR) provider Blackpoint, a threat actor exploited the critical authentication bypass vulnerability to establish an authenticated technician session on an internet-facing SimpleHelp server before deploying the TaskWeaver malware loader and the Djinn Stealer. Based on the findings from the Adversary Pursuit Group (APG), the company's threat intelligence and research team, both pieces of malware are new and have not been documented before. "The compromised RMM platform provided the operator with a trusted administrative channel capable of transferring files and executing commands on systems managed through the server," Blackpoint says. The investigation revealed that TaskWeaver was downloaded in the form of an obfuscated JavaScript file named ‘jquery.js’ from a temporary Cloudflare domain. TaskWeaver is a generic malware loader that fingerprints the compromised device and communicates with the command-and-control (C2) infrastructure to receive new JavaScript modules for execution. The loader then installs Djinn Stealer to collect in a single pass all the sensitive data it can find on a developer's machine, be it Windows, macOS, or Linux. Blackpoint mentions that Djinn Stealer has a particular focus on AI development tools, but targets a broad collection of developer and infrastructure credentials: Cloud provider credentials, identity services, deployment platforms, and cloud management tools. Git configuration, GitHub CLI, SSH keys, Docker credentials, Helm, infrastructure-as-code tools (Terraform, Pulumi), secrets management solutions (HashiCorp Vault), and package manager credentials. Authentication data for package registries and build tools (npm, Yarn, pnpm, Cargo, Maven, Gradle, pip, NuGet), potentially enabling access to private packages or malicious package publication. Local configuration files, authentication tokens, session data, and Model Context Protocol (MCP) configuration for AI coding assistants (Claude, Gemini, Codex, Cline, OpenCode, and Kilo). Cryptocurrency wallets and keystores associated with multiple desktop cryptocurrency clients (Bitcoin, Litecoin, Dogecoin, Dash, Ethereum, Monero, Zcash, Exodus, Atomic Wallet, and Electrum). Browser data, shell history, SSH configuration, PGP keys, database client configuration, operating system information, and other user files. On Linux, the malware also attempts to read the /proc/ /cmdline and /proc/ /environ virtual files that contain information about a running process, including secrets (e.g., API keys, credentials, session tokens, file paths, URLs). Blackpoint researchers warn that stealing credentials for AI development tooling, which is widely used for coding and software development, could allow attackers to inherit the AI assistant's authorized access to repositories, cloud resources, databases, and APIs. “Many of these tools rely on the Model Context Protocol (MCP) to connect an AI assistant to external tools and data on the developer's behalf, including source repositories, databases, cloud accounts, and internal APIs,” explain the researchers. “The settings and tokens for those connections are stored locally in files such as ~/.claude/mcp.json. Stealing them can grant an attacker the same downstream access the developer extended to their AI agent, reaching well beyond the AI service itself.” Before exfiltrating the sensitive data to the C2 server, Djinn Stealer packs it into a TAR archive, then compresses it with GZIP, and encrypts it with an AES-256-GCM key protected by an RSA-2048 public key embedded in TaskWeaver. Active exploitation of CVE-2026-48558 should serve as an urgent call for system administrators to prioritize updating SimpleHelp instances to the latest versions. It is also recommended to invalidate technician sessions that they don’t recognize. If breached, rotate all credentials and API keys. Blackpoint's report provides indicators of compromise (IoCs) observed in the investigated intrusion, which include hashes for the TaskWeaver loader and Djinn Stealer, network infrastructure, host and behavioral indicators. Overall prevention scores can hide what happens after initial access. Once attackers are using valid credentials, prevention drops sharply. The Blue Report 2026 measures defenses technique by technique across 338 million simulations run in customer production environments. Get the report
bleepingcomputer.comJun 29, 2026extracted
Week in review: Fortibleed campaign’s impact on orgs, Cisco Unified CM flaw exploited
Week in review: Fortibleed campaign’s impact on orgs, Cisco Unified CM flaw exploited Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Encrypted DNS still tells an eavesdropper where to look Encrypted DNS runs across much of the Internet. DNS over TLS, HTTPS, and QUIC keep the contents of a query away from anyone watching a network link. The encryption covers the message inside each packet. The packet still carries plaintext headers, and those values mark a flow as DNS. Agent Beacon: Open-source telemetry layer for AI agents AI coding agents such as Claude Code, Codex CLI, Cursor, and Claude Cowork run on developer laptops, CI jobs, cloud environments, where they edit files, run commands, and call outside tools. Beacon, an open-source project from Asymptote Labs, configures telemetry for those runtimes and writes a normalized record of what each agent does across local, CI, and cloud-agent surfaces. Who pays when you gate cyber-capable AI models? In this interview with Help Net Security, Jaya Baloo, COO & CISO at Aisle, examines the debate over restricting access to cyber-capable AI models. She lays out the strongest argument for gating these tools, then explains where it breaks down for security teams who depend on the same capabilities for defense. A $1,400 experiment in AI security auditing outperformed OpenAI’s Codex Security A research team has built a system that teaches AI agents to hunt for software bugs by writing the audit method down as plain text. The system, called EVOHUNT, keeps the underlying AI model fixed and improves only an external “playbook” that tells the agent how to work. GTA 6 early access offers are taking gamers’ crypto Scam websites are circulating across the internet with a pitch aimed at millions of gamers: a way to play Grand Theft Auto VI before its release. The pages promise early access for a few hundred dollars in cryptocurrency, ask buyers to enter a payment code, and claim the game will then unlock. Praxen: Open-source AI agent behavior verification Praxen is an open-source tool with a simple job: it checks whether an AI agent does what it claims to do. The tool takes an agent’s declared policy, looks at how the agent operates, and points out every spot where the two drift apart. Where IT meets OT and railway cybersecurity gets harder In this interview with Help Net Security, Jorge Aldegunde, Global Head of Railway Services at DNV, talks through what happens when old operational technology meets newer IT in monorail systems. He explains why open networks widened the attack surface, how teams decide whether to patch a signalling flaw without stopping trains, and who carries the liability. Scoring AI hackers when there is no answer key AI models are solving an increasing number of offensive cybersecurity benchmarks, making those tests less useful for evaluating the most advanced systems. Many rely on vulnerabilities that have already been publicly documented, allowing models to draw on existing knowledge. FrontierCyber, a benchmark from AI security lab Irregular, takes a different approach. It places models on real systems and measures how far they progress toward a security objective. The uptime questions every engineering leader should ask this week In this interview with Help Net Security, Mattias Geniar, CTO at Oh Dear, explains why most outages start quietly, as creeping latency or a slow rise in errors. He argues teams alert on the wrong things: absolute numbers instead of changes, isolated endpoints instead of real user outcomes. Healthcare leaders see a fatal cyber incident as inevitable Healthcare practices run on a chain of outside vendors. An EMR system holds clinical records, a billing platform processes claims, a telehealth tool supports remote visits, and a cloud provider stores data. Every one of those connections gives an outside company a path into the practice, and any one of them can break. According to Omega Systems’ 2026 Healthcare IT Landscape Report, the large majority of practices dealt with at least one operational disruption that traced back to a vendor or a vendor’s own supplier. Two CEOs on why security and AI readiness belong together SuperOps and Guardz are bundling PSA, RMM, MDM, and agentic SecOps into one offering for MSPs. In this Help Net Security Q&A, SuperOps CEO Arvind Parthiban and Guardz CEO Dor Eisner explain how a connected stack cuts the time and context lost to tool-switching, lowers costs against multi-vendor setups, and helps close the gap between average MSP margins of 8% and the 18% top performers reach. What the Fortibleed campaign means for organizations running FortiGate firewalls A massive credential-harvesting campaign targeting FortiGate firewalls has exposed thousands of organizations to potential network compromise, and a trove of attacker tools, scripts, and credentials left inadvertently exposed on a server has given researchers an unusually detailed look at how the operation worked. Cisco Unified CM flaw actively exploited to drop webshells (CVE-2026-20230) CVE-2026-20230, a server-side request forgery (SSRF) vulnerability affecting Cisco’s Unified Communications Manager (Unified CM), is being exploited to drop webshells and achieve remote code execution capability on the underlying server. Law enforcement hits StealC and Amadey malware networks Operation Endgame, the largest international law enforcement operation aimed at disrupting ransomware and cybercrime infrastructure across the world, has claimed its latest targets: StealC and Amadey. Mystery hackers use novel SharkLoader dropper against governments, software devs Kaspersky researchers have uncovered a previously unknown cyberattack campaign that has compromised government organizations and software development companies in multiple countries. Synology issues critical fix for MailPlus Server vulnerabilities Synology has has fixed critical vulnerabilities in MailPlus Server, a software package used to run private email infrastructure on Synology NAS devices. Details about the vulnerabilities are still under wraps. Product showcase: How to evaluate AI SOC platforms and where Prophet AI leads The agentic SOC market is crowded with vendors promising to automate alert triage, investigation, and response. The challenge is separating measurable operational gains from marketing claims. Prophet Security is an agentic AI SOC platform that autonomously triages, investigates, and responds to security alerts. It also helps strengthen detection and response programs by identifying tuning opportunities, uncovering detection gaps, and enabling natural-language threat hunting. 23 ClawHub plugins squatting official scopes expose AI registry security gaps In this Help Net Security video, Ax Sharma, Head of Research at Manifold Security, breaks down how 23 code-executing plugins ended up under ClawHub’s official @openclaw and @clawhub scopes while owned by unrelated accounts, why an official-looking scope is a supply chain risk even when the code isn’t malicious, and what the registry changed after the disclosure. What your next cyber insurance renewal will demand In this Help Net Security video, Michael Loewy, co-founder, Tide Foundation, explains how cyber insurance is rewriting security programs at renewal time. Hundreds of AI-powered iOS apps found exposing credentials Mobile app developers are packing AI features into everything from writing assistants to productivity tools and lifestyle apps. New research shows that securing access to those services remains a challenge. Researchers from Wake Forest University analyzed 444 iOS applications with LLM features and found 282 that exposed exploitable credentials or backend access mechanisms. Free, no-signup World Cup streams serve scams instead of football Researchers at Malwarebytes identified dozens of websites claiming to offer free access to FIFA World Cup matches. Instead of streaming games, the sites directed visitors through a chain of advertising pages designed to generate revenue for their operators. Phishing hides in routine Microsoft 365 workflows Attackers are abusing Outlook Groups and Microsoft 365 collaboration features to make phishing campaigns appear routine, according to Fortra. The attack begins when a target is added to or invited into an attacker-controlled Microsoft 365 Group. The group’s name, description, or welcome message is designed to create urgency, often using themes such as payroll updates, contract renewals, supplier requests, or mandatory training notices. Two Scattered Spider hackers plead guilty over Transport for London cyberattack Two members of the notorious hacker group Scattered Spider have pleaded guilty to charges related to a 2024 cyberattack on Transport for London (TfL) that resulted in £29 million in loss and recovery costs. Using Reddit to manipulate AI search results is surprisingly easy A Reddit comment that takes only a few seconds to write can end up influencing the answers generated by AI research tools. A Cornell Tech study found that a short snippet of user-generated text, sometimes as little as 13 words, was enough to affect the output of deep-research agents, AI systems that search the web, gather information from multiple sources, and generate reports with citations. LastPass customer data exposed through Klue supply chain attack LastPass disclosed that attackers used OAuth tokens compromised in a supply chain attack on Klue, a market intelligence platform that integrates with CRM and sales tools across organizations, to access customer data stored in its Salesforce environment. Phishing attack on healthcare firm Xsolis impacts 1.4 million people Healthcare technology company Xsolis confirmed that a phishing attack resulted in unauthorized access to its network. The company develops AI-powered software for hospitals, health systems, and health plans and serves more than 600 hospitals and health insurers. Algerian national accused of running cybercrime marketplaces extradited to US An Algerian national accused of running online marketplaces that sold phishing kits and fraud tools has been extradited from Spain to the United States to face bank fraud conspiracy charges. WhatsApp will warn users before they message a potential scammer WhatsApp is rolling out a warning screen on Android and iOS that appears before users open chats with unfamiliar phone numbers. Meta hopes that this new feature will help users avoid scammers. Hacker gets 18 months for attack that compromised 60,000 betting accounts A 21-year-old man known online as “Snoopy” was sentenced to 18 months in prison for his role in a scheme that hacked user accounts on a fantasy sports and betting website and sold access to them, causing hundreds of thousands of dollars in losses. Stealthy new backdoor surfaces in attacks on multiple sectors A relatively new backdoor called Mistic has been deployed in multiple attacks since April 2026 targeting organizations in the insurance, education, IT, and professional services sectors, according to Symantec. A privacy-first take on local malware analysis Submitting a suspicious file to VirusTotal or MalwareBazaar uploads a copy to a searchable public repository. While these platforms help analysts quickly identify malicious files, they also allow threat actors to see when their tools have been detected by monitoring for matching hashes. In targeted attacks, uploaded samples may also contain sensitive victim data, exposing it to third-party systems. Burnyard, a research project from The Ohio State University takes aim at this condition. It runs suspicious binaries on the analyst’s own hardware and keeps each sample local for the duration of the analysis. Microsoft gives Windows 10 users an unexpected extra year of free security updates Microsoft has given Windows 10 users another year of free security updates, extending its consumer Extended Security Updates (ESU) program until October 12, 2027. SIM-swapping gang busted in international police operation Officers from Poland’s Central Bureau for Combating Cybercrime (CBZC) arrested four suspected members of an organized cybercrime group accused of SIM swap attacks, cryptocurrency theft, and money laundering. Mirage2FA phishing kit uses HTML smuggling to steal Microsoft 365 credentials Mirage2FA, a phishing kit that combines short-lived HTML smuggling with obfuscated JavaScript loaders to deliver fake Microsoft 365 login pages and steal credentials during MFA prompts, has been identified by researchers at Fortra. The systemd 261 release brings a software TPM, new OS installer Linux distributions that ship systemd as their init system now have a new version to track. The systemd 261 update adds a cloud metadata subsystem, carries process state through kexec reboots, and continues a long-running effort to load external libraries on demand. Product showcase: Avira Security for iOS blends security, privacy, and device optimization Avira Mobile Security for iOS combines security, privacy, and device optimization tools in a single application. The app is also available for Android, macOS, and Windows devices. Only 7% of companies are ready for the AI agents they deployed Most organizations now run or pilot AI agents that operate on company data with limited human direction at each step, a share that reaches 88% in Veeam Software’s Data and AI Trust Gap report. The systems that are supposed to keep an eye on them have not caught up. Residential proxy SDKs are hiding in LG and Samsung smart TV apps Smart TVs in living rooms run small apps that show fish tanks, clocks, solitaire games, and slideshows of puppies. A share of those apps can also send other people’s internet traffic out through the home connection. Spur Intelligence scanned 6,038 apps across LG webOS and Samsung Tizen and found 2,058 that contain residential proxy software. OpenAI wants AI to fix vulnerabilities, not just find them OpenAI expanded Daybreak, its cybersecurity initiative that combines AI models, Codex Security, security researchers, maintainers, industry partners, and access controls to support vulnerability discovery and remediation. Organizations can use the initiative to identify, validate, and fix software vulnerabilities, while developers, maintainers, and security teams can use its tools to strengthen defensive security capabilities. Security testing was built for a slower world Software teams are pushing code into production faster than security testing can keep up. AI is accelerating development cycles and adding pressure to security programs that rely on periodic validation and manual penetration testing. The 2026 State of AI Security Testing report from Aikido Security found that 76% of organizations have had to stop, restrict, or roll back AI-driven behavior in the past 12 months. Google Workspace expands password reset alerts to all admins Google’s Alert Center, a dashboard in the Google Admin console that displays security and administrative alerts and helps administrators identify, investigate, and respond to issues affecting their organization, is expanding the “Super Admin password reset” alert into the “Admin password reset” alert. The feature is rolling out gradually and will be available to all Google Workspace customers. Anthropic’s Claude Tag gives AI agents independent identities Anthropic introduced an agent identity model for Claude Tag, its AI assistant designed for team collaboration in shared workspaces. The model gives Claude its own identity, permissions, and tool access, configured by administrators and tied to a workspace or channel. Most teams will ship AI-written infrastructure code with little review AI-assisted development has settled into everyday practice across software organizations, and developers using it move from idea to working code in hours. That code does not stay with the developers who prompt it. It flows downstream to the DevOps and platform teams who deploy and maintain it, and those teams are not getting the same speed boost. Best practices for AI in open-source work Free and open source software developers us AI coding assistants such as Claude Code, Copilot CLI, Antigravity, and OpenCode in their daily work. The Software Freedom Conservancy responded to that trend with a set of recommendations for contributors who use these tools, which it groups under the label LLM-gen-AI, meaning generative AI systems backed by LLMs. LLM security advice looks solid until you check the hard cases Plenty of people now type their security worries straight into a chatbot. A hacked account, a suspicious email, a stalker who might be tracking a phone, all of it lands in the same window someone would use to ask about dinner. A benchmark called HelpBench tests how well chatbots handle those moments, and the results give security professionals something to watch in what their users are being told. Google Wallet adds TSA Touchless ID for faster airport screening Google Wallet has joined the Transportation Security Administration’s (TSA) PreCheck Touchless ID program, allowing travelers to pass through security checkpoints using the TSA’s facial comparison technology. The system verifies identity by matching a live photo taken at a checkpoint with identity and flight information, reducing the need to present a physical ID. Modelplane: Open-source control plane for AI inference Organizations that run open-weight models on hardware they own operate GPU fleets spread across clouds, neoclouds, and on-premise data centers. Each fleet handles model placement, replica scaling, infrastructure provisioning, weight distribution, and traffic routing. Teams have built this coordination layer by hand, one operator at a time. Upbound, the company behind the Crossplane project, released Modelplane, an open-source control plane that manages fleet-wide coordination for AI inference. Ransomware gangs find Europe’s weakest link in third-party suppliers Ransomware attacks against European organizations increased during the first months of 2026, with third-party suppliers becoming a major entry point for attackers. Black Kite examined 2,066 ransomware incidents across 31 countries between January 2025 and April 2026 in its 2026 European Cyber Risk Report. Critical open-source projects get a new security framework Open source software projects are getting a new framework for handling security vulnerabilities as AI shortens the time between flaw discovery and exploitation. The Linux Foundation has launched Akrites, an industry initiative that brings together technology companies, financial institutions, security vendors, AI companies, and open source projects to support the remediation and disclosure of vulnerabilities affecting widely used open source software. Cybersecurity jobs available right now: June 24, 2026 We’ve scoured the market to bring you a selection of roles that span various skill levels within the cybersecurity field. Check out this weekly selection of cybersecurity jobs available right now. New infosec products of the month: June 2026 Here’s a look at the most interesting products from the past month, featuring releases from AISLE, Asimily, Blue Planet, depthfirst, Diligent, Drata, Elastic, Filigran, Flip, Hyland, IDnow, Legit Security, MazeBolt, Noma, Qodo, Ridge Security, Tigera, and WitnessAI.
helpnetsecurity.comJun 28, 2026extracted
Tool updates: lots of security and logic fixes, (Mon, Mar 23rd)
So, I've been slow to get on the Claude Code/OpenCode/Codex/OpenClaw bandwagon, but I had some time last week so I asked Claude to review (/security-review) some of my python scripts. He found more than I'd like to admit, so I checked in a bunch of updates. In reviewing his suggestions, he was right, I made some stupid mistakes, some of which have been sitting in there for a long time. It was nothing earth-shattering and it took almost no time for Claude, it took longer for me to read through the updates he wanted to make, figure out what he was seeing, and decide whether to accept them or tweak them. Here are a few of them. a logic inversion error with the -f switch, and some unhandled errors in convert-ts-bash-history.py a TOCTOU (time of check/time of use) possible race condition, and a comment about some ambiguity with the -c switch when deciding which hash was used based solely on the length of the hash in sigs.py some overly permissive permissions, a possible symlink attack, and an encoding issue in ficheck.py a possible header injection issue via the -s switch with mail_stuff.py Most of these are issues I should have caught myself given how long I've been programming/scripting, but all of these started out as quick and dirty scripts to solve a problem I had, and then I made them available to the public through my github repo without taking any time to really ensure they were ready for public consumption. Taking a few minutes to setup Claude without much in the way of guidance (my CLAUDE.md is still very much a work-in-progress) and the one in my my scripts repo was one I asked Claude to create for me after some back and forth during this review which mostly covers a couple of personal preferences. I guess the main point is I'm late to the game on using AI on a daily basis, but that needs to change. Even when I'm feeling my age and write my own scripts, I need to have that second pair of eyes give it a second look. Some of these scripts run as root out of cron or systemd timers on systems I administer and some of those issues could have been used for privilege escalation by an attacker who managed to get access. Even those of us with more grey than not in our beards need to be spending some time figuring out how to integrate this stuff into our daily routine. References: [1] https://github.com/clausing/scripts --------------- Jim Clausing, GIAC GSE #26 jclausing --at-- isc [dot] sans (dot) edu
isc.sans.eduMar 23, 2026extracted