标签：#security

There's a version of dogfooding that's a slogan, and a version where your own employees can't ship code until the bug is fixed. We run the second kind. The Authagonal staff console, the one we use to manage every tenant, authenticates through Authagonal itself: SAML single sign-on from our Entra directory, with SCIM deciding who gets in and what they can do. There is no separate admin password table. We deleted it. If our own SAML is broken, we are locked out of our own product. That's uncomfortable in exactly the useful way. It turns "SSO is an enterprise feature we support" into "SSO is the only way the people who built this get to work today." Here's what being our own customer caught. A trimmed build that broke signature verification We publish the auth server trimmed, to keep the image small. Trimming aggressively deletes code it can't prove is used, and reflection hides usage from it. .NET resolves its XML-signing crypto algorithms by name, reflectively, through CryptoConfig . The trimmer couldn't see those types were needed, removed them, and SignedXml quietly came back unable to build the algorithm. SAML signature verification, the step that proves the login is real, threw a null reference at runtime. The unit tests passed, because they ran against the untrimmed build where the types still existed. Only the trimmed production artifact failed, and it failed at the exact moment a human tried to sign in. We ship the auth server untrimmed now, with a healthy distrust of trimming anything near reflection-based crypto. If we only supported SAML rather than living on it, this is a customer's incident report instead of ours. Provisioning is the actual login Authenticating a user is the easy half of SSO. The hard half is deciding what they're allowed to do and keeping it in sync as people join and leave. We drive that with SCIM: Entra group membership maps to roles, resolved at the moment a token is issued, not copied once at account creation. Add someone to the righ

Last night I ran external security scans on the public websites of 10 leading Shopify and Shopify Plus agencies — the same scan any browser or attacker would see. No credentials, no special access. One agency scored an A. Three scored C- or below. The most common finding appeared on 9 of 10 sites. TL;DR 1 agency scored an A. 3 scored C- or below. 1 scored a D. The most common finding — missing security headers — appeared on 9 of 10 sites. 6 of 10 agencies have no HSTS at all. One agency has a session cookie without the Secure flag. That is the most concrete finding in the set. What was scanned Five categories per domain: TLS (HSTS presence and max-age), security headers (CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy), cookie flags, DNS hardening (DNSSEC and CAA) and sensitive exposure paths. All scans run on 23 June 2026. This covers the agencies' own marketing sites — not the client stores they build. Results Agency Domain Score Grade 1Digital Agency 1digitalagency.com 94 A Acidgreen acidgreen.com.au 77 B 30 Acres 30acres.com.au 76 B Fourmeta fourmeta.com 76 B Blend Commerce blendcommerce.com 76 B Elkfox elkfox.com 76 B Charle Agency charleagency.com 62 C Fyresite fyresite.com 62 C Eastside Co eastsideco.com 58 C- Swanky Agency swankyagency.com 55 C- Blubolt blubolt.com 54 D Per-agency notes 1Digital Agency — A (94) HSTS at two years, X-Content-Type-Options and Referrer-Policy set correctly, Permissions-Policy restricting camera, microphone and geolocation, CSP frame-ancestors in place of X-Frame-Options. Only gap is HSTS missing includeSubDomains. Acidgreen — B (77) HSTS with two-year max-age, includeSubDomains and preload — the strongest TLS config in the set. But CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy are all absent. Worth noting Acidgreen is multi-platform (Shopify Plus, Adobe Commerce, Magento) rather than Shopify-only. 30 Acres — B (76) A Shopify Plus Partner agency based in Byr

Securing AI: Codex Operational Bugs, Claude Output Integrity, Copilot Context Today's Highlights This week's top security news highlights critical operational bugs impacting AI systems, alongside deeper dives into ensuring the integrity of AI-generated content. We also explore how improved context handling in AI coding assistants can subtly enhance generated code security. Codex logging bug may write TBs to local SSDs (Hacker News) Source: https://github.openai/codex/issues/28224 A recently disclosed bug in OpenAI's Codex has revealed a critical operational security concern: excessive logging that can lead to the rapid consumption of local SSD storage. This issue, documented on GitHub, highlights how seemingly innocuous software bugs can escalate into denial-of-service (DoS) vectors, particularly in resource-intensive AI environments. While not an exploit in the traditional sense, a system running out of disk space due to uncontrolled logging can halt operations, prevent critical updates, or even lead to data loss if not managed proactively. For developers and system administrators deploying AI models like Codex, this bug serves as a potent reminder of the importance of robust logging configurations and monitoring. Proactive measures, such as log rotation, size limits, and alerts for abnormal disk usage, become essential hardening techniques. This vulnerability underscores that operational stability is a key component of overall system security, especially when integrating complex AI tools into production environments where resource consumption can be unpredictable. Comment: This bug is a stark reminder that even sophisticated AI tools can have fundamental operational flaws. Monitoring disk usage and implementing strict log management policies are non-negotiable for AI deployments. The text in Claude Code’s “Extended Thinking” output (Hacker News) Source: https://patrickmccanna.net/the-text-in-claude-codes-extended-thinking-output-is-not-authentic/ An analysis of Cl

The move comes after the company left potentially sensitive data from the initiative exposed internally.

The incident comes as Tata Electronics expands its role in global technology supply chains.

An AI agent with its own mailbox reacts to whatever lands in it. That's the point, until a spam blast, a mailer-daemon loop, or an auto-reply triggers the agent into answering noise. The same goes the other way: an agent composing mail on its own can address the wrong person, leak to a test domain that slipped into production, or email a competitor because nobody told it not to. A human would catch these. An agent needs guardrails encoded somewhere it can't skip. Agent Accounts ship three admin resources for exactly this: Policies bundle limits and spam settings, Rules match mail on the way in or out and run actions like block or assign_to_folder , and Lists are reusable collections of domains or addresses that rules reference. This post covers all three from two angles: the HTTP API for your backend, and the Nylas CLI for inspecting and managing policies and rules from the terminal. Lists, workspaces, and the rule-evaluations audit log are API-only for now. I work on the CLI, so the terminal commands below are the ones I reach for. How Policies, Rules, and Lists fit together The three resources form a chain, and a workspace ties it to your accounts. A List holds values like domains or addresses. A Rule references lists through the in_list operator and describes conditions and actions. A Policy bundles limits and spam settings. A workspace carries one policy_id plus an array of rule_ids , and every Agent Account in that workspace inherits both. What matters here: you don't attach a policy or rule to an individual grant. You set policy_id and rule_ids on a workspace , and they apply to every account in it. Each application has a default workspace that holds any account you haven't placed elsewhere, so configuring that one workspace covers all your unassigned accounts at once. All three resources are application-scoped — they carry no grant ID in the path, and your API key identifies the application. Resource What it owns How it's referenced List A typed collection of

European offensive cybersecurity company Paradigm Shift released details of a flaw and a technique to exploit it that opens the door for hackers to unlock and break into older iPhones.

Claude's chatbot may ask to verify your age and identity "in certain circumstances," such as with a passport or driver's license, according to a privacy policy change.

Amid concerns about AI models’ cybersecurity capabilities, OpenAI revealed an improved version of GPT-5.5-Cyber and its “Patch the Planet” initiative to fix open-source software bugs.

It is a one-line habit that has saved me more debugging time than any clever abstraction: I log which model actually answered every Claude request. Not which model I asked for. Which one responded. In 2026, with model fallbacks, fast-changing model strings, and routing logic, those are not always the same thing. Here is why the gap exists and what it has caught. The request model and the response model can differ You send model: "claude-fable-5" . You assume Fable 5 answered. But the response object tells you what actually served the request: const response = await client . messages . create ({ model : " claude-fable-5 " , max_tokens : 16000 , thinking : { type : " adaptive " }, messages : [{ role : " user " , content : prompt }], }); console . log ( " requested fable-5, served: " , response . model ); Most of the time they match. The interesting cases are when they do not. The Fable 5 safeguard fallback The reason this matters most in 2026 is Fable 5's safeguards. Fable 5 has hard guardrails in cybersecurity, biology, chemistry, and health. If your prompt trips one, the request does not just refuse. It silently falls back to Opus 4.8 to produce a safe answer. For my security work, this is a sharp edge. I run contract-analysis prompts that can look adversarial to a safeguard. If one trips, I am quietly getting Opus 4.8 output while believing I am getting Fable-tier reasoning. The quality difference on a hard audit is exactly the thing I paid double for, and it vanished without an error. The only way to know is to read response.model : if ( ! response . model . startsWith ( " claude-fable-5 " )) { logger . warn ( { requested : " claude-fable-5 " , served : response . model }, " Fable 5 request fell back, likely a safeguard trip " , ); } Without that log, a fallback is invisible until I notice the analysis got worse and have no idea why. Routing logic and config drift The other source of the gap is my own code. I have routing that picks a model based on task type and

I have written some version of "never hardcode secrets, store them in Key Vault instead" in at least five of my last nine posts on this blog. I never actually stopped to explain what that means in practice. This post fixes that, using the real secrets this very blog depends on: a database connection string, an admin panel password, and a set of GitHub deployment credentials. What Azure Key Vault Actually Is Azure Key Vault is a managed service for storing secrets, encryption keys, and certificates securely in the cloud. Instead of a password sitting in a configuration file or a public GitHub repository where anyone with read access can see it, the password lives in Key Vault - encrypted, access-controlled, and logged every single time it is read. Picture your code as a house with see-through walls - anyone looking at the repository can see everything inside, including any password left lying on the kitchen table. Key Vault is a bank vault a few streets away. Your code does not hold the password directly; it holds a key card that lets it walk over and request the password at the exact moment it is needed. Lose the key card, and you still cannot get into the vault without proper identity verification on top of it. Three Things Key Vault Stores Secrets are plain string values - passwords, connection strings, API keys, tokens. Keys are cryptographic keys used for encrypting and decrypting data, or for signing and verifying it. Certificates are X.509 certificates used for TLS or client authentication between services. Most applications, including this one, primarily use the Secrets feature. An Honest Admission About TechStackBlog's Own Setup This blog does not actually use Key Vault directly today. The database password lives in Azure App Service Configuration. The admin panel password and deployment credentials live in GitHub Secrets. For a single-application personal project, this is a perfectly reasonable and secure setup. Key Vault earns its place once you have multi

Before I released my own AI chatbot plugin, I ran it through a security review. It came back with 35...

Huntress, HackerOne, Jamf, Recorded Future, and Tanium are among the cybersecurity companies that had data stolen following an earlier breach at market research firm Klue.

A stat from 2026 that should stop you cold: 88% of organizations reported a confirmed or suspected AI agent security incident in the past year (92.7% in healthcare). And more than half of all agents run with no security oversight and no logging — naked. The problem isn't that the AI isn't smart enough. It's that almost nobody welded boundaries around it. And boundaries are exactly where rigor lives. The incident list: speed flooring it, boundaries naked The last couple of weeks of security signals line up scarily well: 88% of orgs reported confirmed/suspected AI agent incidents in the past year; healthcare 92.7% ; over half of agents have no security oversight or logging. Supply chain is the front door. A plugin-ecosystem supply-chain attack harvested agent credentials from 47 enterprise deployments ; attackers used them to reach customer data, financial records, and proprietary code — undetected for six months. A public skills marketplace at one point hosted 824 of 10,700 malicious "skills." Config is an attack surface. Check Point disclosed remote code execution in a popular coding agent via poisoned repository config files ; MCP (Model Context Protocol) is the connective tissue across nearly every incident this year — poisoned configs, malicious marketplace skills, unauthenticated exposed MCP servers. By early 2026, at least ten public incidents across six major AI coding tools were attributed to " agents acting with insufficient boundaries. " The industry's own summary: AI agent security in 2026 is a supply chain problem first, a prompt-injection problem second. And every one of these shares a single root cause — the agent can act, but there's no architectural boundary on what it can touch, change, or call. Why "naked" is inevitable: bolt-on boundaries always leak Why do half the agents run with no oversight? Because in the mainstream approach, boundaries are bolt-ons : an allow-list here, a gateway there, logs you read after the fact. The trouble: The tools an

Dan Fineran explores how eBPF has evolved far beyond its roots in packet filtering into a robust, safe way to extend the Linux kernel. He explains how the eBPF "verifier", the security guardrail, enables implementation of deep observability and networking without the risks of traditional kernel modules or the slow upstreaming process. By Dan Fineran

In this article, the author explores data poisoning as a threat to machine learning systems, covering techniques such as label flipping, backdoors, clean-label poisoning, and gradient manipulation. The article reviews real-world incidents, discusses the challenges of detecting poisoned data, and presents practical defenses, tools, and operational practices for securing ML training pipelines. By Igor Maljkovic

OpenAI introduces new Daybreak tools, including Codex Security and GPT-5.5-Cyber, to help organizations find, validate, and patch vulnerabilities at scale.

OpenAI introduces Patch the Planet, a Daybreak initiative helping open-source maintainers find, validate, and fix vulnerabilities with AI and expert review.

From fake tickets to cloned websites, AI is magnifying World Cup scams. Can fans distinguish between what’s real and what’s not?

Most organizations know exactly how many employees they have. Far fewer know how many non-human identities currently have access to their cloud environment. That blind spot is becoming one of the fastest-growing attack surfaces in modern security. For years, enterprise security focused primarily on protecting human identities. We deployed Single Sign-On (SSO), enforced Multi-Factor Authentication (MFA), and implemented Conditional Access policies. And it worked — human identities have become significantly harder to compromise. Meanwhile, another class of identities has quietly exploded across cloud environments: service principals, workload identities, OAuth applications, CI/CD runners, and AI service roles. Today, these Non-Human Identities (NHIs) often outnumber human users by a factor of 10 to 50. As organizations accelerate cloud adoption and integrate AI into daily operations, this imbalance continues to grow. Defining the Non-Human Identity Landscape Unlike human users, machine identities rarely appear in HR systems or organizational charts. Yet they frequently hold some of the most privileged access in the environment. Common high-risk categories include: OAuth Applications and Third-Party Integrations — Apps granted broad access to Microsoft 365, Salesforce, Google Workspace, or Slack via delegated permissions. Service Principals and Managed Identities — AWS IAM roles, Azure Managed Identities, and GCP service accounts used by Lambda functions, EC2 instances, or Bedrock agents. Workload Identities — Kubernetes Service Accounts (e.g., Amazon EKS) and GitHub Actions OIDC roles. CI/CD Pipeline Identities — Tokens used by automation platforms to deploy infrastructure. AI Service Roles — Dedicated identities for Amazon Bedrock agents, model invocation, vector stores, and retrieval pipelines. Every new AI workflow creates additional machine identities. Why Attackers Are Targeting NHIs Attackers follow the path of least resistance. While human accounts are now heav