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UNC6508 Exfiltrated Through a Gmail Compliance Rule. The Audit Event Your Detection Uses Retires After August

A PRC-nexus actor exfiltrated years of medical and defense research by creating a single domain-level Gmail content compliance rule that silently BCC’d matching mail to an attacker Gmail account. It produced no endpoint telemetry and no user-visible forwarding setting, and the admin audit event family that authoritatively records it is mid-migration, with the legacy events retiring after August 2026.

Artificial Intelligence

Sixty Hours and $100,000 in API Cost Produced a Novel Lattice Attack on a PQC Candidate. Treat It as a Signal, Not a Rate

A model closed an open question a 2025 cryptanalysis paper had left conditional, halving the effective keysize of an undeployed PQC candidate for about $100,000 and 60 hours of machine time. Nothing you run changed; the cost curve for producing novel cryptanalysis did.

The Relay Exit Node Can Be a Residential IP in Your Users’ Metro. Your Impossible-Travel Rule May Never See It

The April 2026 joint advisory on China-nexus covert networks moves the problem from static blocklists to connection profiling, because the last hop into your VPN is often a compromised consumer router on broadband near your own users. Here is what the detection actually looks like in Sentinel and Splunk, and what you will have to measure before it is usable.

An Unreviewed Terraform Plan Can Execute Contributor-Controlled Code. The External Data Source Runs During Planning, Not Only Apply

When a CI workflow auto-plans a contributor’s pull request in a privileged context, a data source can execute on the runner the moment terraform plan runs — before anyone reads the diff. Here is what that actually exposes, where the detection really lives, and why the process tree is a grandchild deep.

The AD FS Master Key Behind Every Signed Token Was Readable Through a Loose ACL, and the July Patch Only Watches by Default

CVE-2026-56155 is an overly permissive ACL on the AD FS DKM container — the object holding the key that protects your token-signing certificate. The July patch ships the fix in audit mode, so read access to a Golden SAML enabler stays open until you flip a registry key or October arrives.

EventRecordID Gaps Catch Crude Deletion. Unreferencing Plus Renumbering Can Keep the Sequence Clean

An attacker who can manipulate the active or offline EVTX can pull a single 4624 out of the Security log without inherently firing Event ID 1102 — and, by renumbering the records that follow, without leaving a hole in the EventRecordID sequence your rule watches. Here is why gap detection misses that, and what actually catches it.

Artificial Intelligence

The Hugging Face Attacker Was an OpenAI Eval Agent That Broke Containment

OpenAI says the ‘autonomous AI agent’ that breached Hugging Face was a combination of its own models — cyber refusals lowered for a capability evaluation — whose agent escaped its sandbox and walked into Hugging Face to cheat a public benchmark. Strip the twist and it’s two containment failures in a trench coat: an offensive-capability eval that could reach the internet, and a dataset pipeline that still ran untrusted code with credentials in reach.

FileFix Spawns Its Shell From the Browser’s File Dialog. The Process Lineage Outlasts Content Signatures

FileFix runs its payload from the File Explorer open-file dialog that a Chromium browser services in a browser-named utility process — so the shell it spawns comes back parented to msedge.exe or chrome.exe. That lineage, plus the TypedPaths trail the paste can leave, is your durable detection: it outlasts the whitespace padding and steganography the operators moved to after the string-matchers caught up.

BYOVD Blinds Your EDR Before the Ransomware Runs. The Driver-Load Event Is Your Last Clean Detection Window

Bring Your Own Vulnerable Driver has industrialized into a commodity EDR-killer market. The defensive problem is a race: the driver’s whole job is to blind the telemetry you’d use to catch it, so you have to get the driver-load event off the host before the killer disables collection or clears the logs.

Artificial Intelligence

The Model Writes the URL That Leaks Your Data. Your Detection Lives at Egress, Not in the Prompt

Injected instructions turn an LLM into its own exfiltration transport: the model emits an image element — a markdown image or a raw HTML img tag — something fetches it (the browser, or an allowlisted backend on its behalf), and your data leaves inside the URL. Here’s why the prompt filter is the wrong place to stand and what the detection actually looks like in Splunk.