Enterprise cybersecurity and AI engineering

Coverage spans identity, cloud, endpoints, networks, application security, supply chains, detection and response, and AI security and engineering. Useful developments can qualify from any vendor.

Simon Willison··AI engineering

Jev introduces a new shape of LLM - System One, aka Decision Models

Publisher excerpt

Last week TypeSafe AI unveiled Jev , their first example of a new category of model that they are calling "System One models" (I'm with Maggie Appleton, I think "decision models" is a better name for these). Jev is an interesting variant on the usual LLM format: it still accepts text inputs, but instead of text output it returns floating point numbers corresponding to categories, yes/no questions, ratings, and associated confidence scores. TypeSafe describe Jev like this: Think of Jev as a frontier-intelligence function call: unstructured state in, typed probabilistic decisions out. It's also…

AWS Security Blog··Cloud & SaaS

Transforming Bedrock Guardrails events into OCSF with CloudWatch

Publisher excerpt

Security teams investigating possible AI-related security events need guardrail intervention data alongside their existing security telemetry. When a guardrail identifies or blocks a prompt injection attempt or redacts sensitive data, that intervention carries additional investigative value comparable to a failed sign-in or a network intrusion alert. AWS Bedrock publishes this telemetry to AWS CloudWatch metrics […]

Trail of Bits··Identity & access

SAML: A fractal of bad design

Publisher excerpt

Born out of academia and raised in corporate IT departments, the Security Assertion Markup Language (SAML) authentication protocol continues to be a staple in these organizations. However, it’s time for it to retire. With the rise of software-as-a-service (SaaS) companies in the late aughts, IT departments needed a way for users to authenticate to many new web services. SAML and the burgeoning single sign-on (SSO) industry fulfilled this need. However, SAML is being crushed under the weight of its own complexity. It’s time to deprecate it and move on to modern alternatives like OpenID Connect…

Google Project Zero··Vulnerabilities

Windows Exploitation Techniques: Dangling COM Object Registrations

Publisher excerpt

This short blog post is about abusing a privilege escalation bug that Microsoft recently fixed in Windows, CVE-2026-66804, that I and 14 others reported. This issue is an incomplete fix for CVE-2026-50343, a bug dubbed “Dark Elevator” by Calif. The root cause of the bug was a dangling COM object registration for the CrossDevice COM object with the CLSID {E9F83CF2-E0C0-4CA7-AF01-E90C70BEF496}. A COM registration typically needs two parts: a server executable, which for in-process components is a DLL and a CLSID entry under the HKEY_CLASSES_ROOT registry key which points to that DLL.

Simon Willison··AI engineering

llm-keys-ui 0.1

Publisher excerpt

Release: llm-keys-ui 0.1 This plugin solves a very specific problem. I've started using Codex Remote to run coding agents on various machines while controlling them from my phone. Sometimes I use those machines to hack on LLM projects, and occasionally that means I need to configure an API key. I don't like pasting API keys into agent sessions, so I wanted a way to get those keys onto a machine without pasting them into the ChatGPT app directly. With this plugin, I can tell Codex to run: uvx --with llm-keys-ui llm keys-ui --all Then have it tell me the URL - including local network or Tailsca…

Simon Willison··Identity & access

Gemini Hacked Three Companies in First Known Breakout by Google’s AI

Publisher excerpt

Gemini Hacked Three Companies in First Known Breakout by Google’s AI Gemini finally caught up on Felony Bench ! The hacks, which the company confirmed on Friday, occurred in May as part of a test run by the company Irregular, which was also involved in similar incidents disclosed by OpenAI, Anthropic and Meta. In one of the cases, the model guessed passwords until it gained access to a protected system. In the other two cases, the model found credentials in a public repository that allowed it to then access protected systems. In each case, the model ended the intrusion after determining it ha…

Trail of Bits··AI engineering

Auditing in the age of (good enough) AI

Publisher excerpt

Security firms have published numerous blog posts describing how they pointed their agent harness at a codebase and found dozens of bugs ( we’re one of them ). However, these posts tend to focus on agentic code review, which is just one aspect of how we use AI in our security reviews. We want to give a different perspective: before code review even starts, agents now allow us to build custom tooling and formal models that improve the quality and depth of our reviews. We recently reviewed the Miden VM, a new zero-knowledge VM with its own custom assembly language and almost no developer toolin…

Simon Willison··AI engineering

How To Write With An LLM

Publisher excerpt

How To Write With An LLM Thomas Ptacek on using LLMs as copyeditors, not as writing assistants: Rule Number One: You may not use a single word an LLM suggests to you. [...] I think that as a form of intellectual personal protective equipment you should adopt the rule that any specific turn of phrase an LLM suggests is off limits. Be strict about the rule! I won't let LLMs write content for my blog, but I use them for fact-checking, spelling and grammar and as an occasional thesaurus (see my proofreading prompt ). The rule to never use a turn of phrase suggested by an LLM feels good to me. The…

AWS Security Blog··Cloud & SaaS

Run open weight models on Amazon Bedrock in AWS European Sovereign Cloud

Publisher excerpt

European organizations can run AI workloads on Amazon Web Services (AWS) while keeping data within the European Union (EU) and meeting regulatory requirements. You can now run generative AI workloads on open weight models on Amazon Bedrock in the AWS European Sovereign Cloud. We’re excited to announce the general availability of the first open weight […]

Simon Willison··AI security

Self-generated prompt injections in compaction summaries

Publisher excerpt

Self-generated prompt injections in compaction summaries In Our framework for reporting model misalignment OpenAI provide "six reports on unexpected or concerning model behavior we’ve observed in the last six months". This one here is my favorite: they caught some of their models in training deliberately subverting themselves in their compaction prompts. Compaction is the process agent systems use when they are running out of tokens in their context window, so they summarize everything that has gone before so they can keep going with more token headroom. In one of the observed instances, a mo…

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91105

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91104

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91103

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91102

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91100

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

hp linux imaging and printing: CVE-2026-91098

Publisher excerpt

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Vulnerability Candidates··Vulnerabilities

concretecms concrete cms: CVE-2026-85385

Publisher excerpt

Concrete CMS below 9.5.4 did not validate the user timezone value (uTimezone) on write and rendered it without output encoding on the Dashboard user management page, where Date::getTimezoneDisplayName() returns any non-IANA value unchanged. A stored cross-site scripting payload saved in this field executed in an administrator's browser when they viewed the affected user in the Dashboard, running script in the admin session (for example to read CSRF tokens, create administrator accounts, or change site settings). In Concrete CMS 9.5.3 the field…

Vulnerability Candidates··Vulnerabilities

dell objectscale: CVE-2026-70416

Publisher excerpt

Dell ObjectScale, versions prior to 4.4.0.0, contains a Deserialization of Untrusted Data vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.

Vulnerability Candidates··Vulnerabilities

dell objectscale: CVE-2025-43936

Publisher excerpt

Dell ObjectScale, versions prior to ObjectScale 4.4.0.0, contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Cisco Talos··Vulnerabilities

Securing the unpatchable in an age of AI-driven vulnerabilities

Publisher excerpt

Advances in AI technology will continue to identify vulnerabilities that in some circumstances are difficult, or effectively impossible, to patch. Appropriate network segmentation, rigorous visibility, and the deployment of NGFW/IPS combinations can provide a powerful compensatory layer.

Palo Alto Unit 42··Identity & access

Atomic macOS (AMOS) Stealer Activity

Publisher excerpt

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 .

AWS Security Blog··Identity & access

Architecting resilient authentication with Amazon Cognito multi-Region replication

Publisher excerpt

Your consumer identity and access management (CIAM) system is the foundation of your customer experience. It’s how users sign in, access services, and engage with your applications. As your business scales across geographies, ensuring authentication is always available becomes a core architectural requirement. However, building multi-Region authentication has traditionally required complex custom replication solutions that […]

Vulnerability Candidates··Vulnerabilities

dell wyse management suite: CVE-2026-81240

Publisher excerpt

Dell Wyse Management Suite, versions prior to 2605.0.3.683, contain an Unrestricted Upload of File with Dangerous Type vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.

Vulnerability Candidates··Vulnerabilities

dell wyse management suite: CVE-2026-81239

Publisher excerpt

Dell Wyse Management Suite, versions prior to 2605.0.3.683, contain an Unrestricted Upload of File with Dangerous Type vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.

Vulnerability Candidates··Vulnerabilities

dell wyse management suite: CVE-2026-81238

Publisher excerpt

Dell Wyse Management Suite, versions prior to 2605.0.3.683, contain a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Vulnerability Candidates··Vulnerabilities

dell wyse management suite: CVE-2026-81236

Publisher excerpt

Dell Wyse Management Suite, versions prior to 2605.0.3.683, contain an Unrestricted Upload of File with Dangerous Type vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.

AWS Security Blog··Supply chain

Operationalizing least privilege: Automate IAM remediation through your CI/CD pipeline

Publisher excerpt

The principle of least privilege is straightforward to articulate but challenging to maintain at scale. When teams first deploy applications to AWS, they often grant broader permissions than strictly necessary; it’s faster to get things working, and the plan is always to tighten permissions later. But later rarely comes. Permissions accumulate, AWS Identity and Access […]

Trail of Bits··Vulnerabilities

1Password's AI patching benchmark is misleading

Publisher excerpt

1Password’s FLAWED report , published on August 6, 2026, gives defenders a misleading picture of AI patching. Its headline says models produced clean fixes only 26% of the time. That figure includes experiments that deliberately instructed agents to apply the wrong fix, along with experiments in which agents could not compile or test their patches. The report risks making defenders less effective by discouraging them from using technology that could help them fix more vulnerabilities. Teams that take its headline at face value may leave repairable vulnerabilities unaddressed. We want our work…