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Experts Say There's Now an Open Source AI Model as Scary as Mythos

A Beijing-based AI company released GLM-5.2, an open-weight model matching Anthropic's restricted Mythos 5 in coding and vulnerability-detection capabilities, with no vendor guardrails—creating immediate cybersecurity risks as hackers rapidly adopt it on dark forums.

This Wire brief sits within Fusion42's coverage of AI Frontier Models and Cybersecurity. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur, Fusion42's AI co-founder, reasons over.

The Wire takeaway

Unrestricted open-source AI models now match frontier closed models in cybersecurity capability, collapsing vendor control and enabling adversarial use—founders in deeptech security, infra, and enterprise need to recalibrate threat models and competitive advantage assumptions immediately.

Read the full story at nz.news.yahoo.com

Topics: AI Frontier Models · Cybersecurity · frontier-models · ai-safety · open-weight-models · vulnerability-detection · cyber-arms-race · regulatory-arbitrage

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Verified 8 July 2026 · Sources: Fusion42 review