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Microsoft Says New Cybersecurity AI Model Helps MDASH Score 95.95% at Half the Cost

Microsoft has launched its first cybersecurity-specific model inside MDASH, its multi-model vulnerability identification and remediation harness. The company says MDASH, using MAI-Cyber-1-Flash and GPT-5.4, scored 95.95% on CyberGym. It also claims the configuration costs 50% less than its current best MDASH combination of GPT-5.4, GPT-5.4 mini, and GPT-5.3 Codex. Access is limited to approved

Improving Heuristics for A* Pathfinding

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Attackers Exploit Arista VeloCloud Orchestrator Command Injection Flaw

A maximum-severity security flaw impacting on-premises versions of Arista VeloCloud Orchestrator (VCO) has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-16812 (CVSS score: 10.0), is a case of operating system command injection that could pave the way for arbitrary code execution. "VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue

Vercel Sandbox supports forking

now supports forking with .Vercel SandboxSandbox.fork() The fork starts from the source's current snapshot and inherits its config and environment variables. If the source is running, it forks the latest saved state, not the live in-memory state. If the source has no snapshot, it falls back to a fresh create, using the source's and config. Any parameter you pass overrides the inherited value.runtime A fork takes about the same time as creating a sandbox, with the same limits. Use it to branch a

Using an open model feels surprisingly good

Article URL: https://matthewsaltz.com/blog/using-an-open-model-feels-surprisingly-good/ Comments URL: https://news.ycombinator.com/item?id=49078583 Points: 308 # Comments: 133

A $500 RL fine-tune of a 9B open model beat frontier models on catalog review

Article URL: https://fermisense.com/when-machines-take-the-wheel/ Comments URL: https://news.ycombinator.com/item?id=49078454 Points: 306 # Comments: 116

ISC Stormcast For Tuesday, July 28th, 2026 https://isc.sans.edu/podcastdetail/10026, (Tue, Jul 28th)

GitHub Copilot for JetBrains adds improved OpenTelemetry configuration and model management

This update brings more control and clarity to your GitHub Copilot for JetBrains workflows. You can now connect MCP servers and custom agents in Claude agent flows, tune telemetry and… The post GitHub Copilot for JetBrains adds improved OpenTelemetry configuration and model management appeared first on The GitHub Blog.