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AI testing org METR loses $600K in model credits to API key theft

By PulseAugur Editorial · [2 sources] ·

The AI model testing organization METR has disclosed two security incidents that occurred earlier this year. In the first, an attacker stole an API key and consumed approximately $600,000 worth of credits for public models over three weeks. This occurred due to a researcher's publicly accessible instance with an exposed API key, which was found by an attacker searching for high-signal keywords. The second incident involved attackers probing METR's infrastructure and attempting to gain access to internal data. AI

IMPACT Highlights the need for robust security measures and spending controls for API keys, even for free credits, in AI development and testing.

RANK_REASON Security incident involving an AI testing organization and the misuse of API credits.

Read on Mastodon — sigmoid.social →

AI-generated summary · Google Gemini · from 2 sources. How we write summaries →

AI testing org METR loses $600K in model credits to API key theft

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Security incident involving an AI testing organization and the misuse of API credits.
Source corroboration
2 independent sources
Multiple independent publishers reporting the same story raises confidence that it's real and newsworthy.
Topics
product, safety
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
28 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [2]

  1. Mastodon — sigmoid.social TIER_1 English(EN) · [email protected] ·

    "Attacker stole a METR API key, used $600K worth of credits, and no one noticed for weeks" # AI # Security # VibeCoding https://www. theregister.com/security/20

    "Attacker stole a METR API key, used $600K worth of credits, and no one noticed for weeks" # AI # Security # VibeCoding https://www. theregister.com/security/2026/ 09/01/attacker-stole-a-metr-api-key-used-600k-worth-of-credits-and-no-one-noticed-for-weeks/5293730

    LINKS theregister.com/…/5293730
  2. The Register — AI TIER_1 English(EN) ·

    Attacker stole a METR API key, used $600K worth of credits, and no one noticed for weeks

    The model provider gave METR the credits for free. An actual customer would not have been so lucky

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