The Hacker News AI Security · November 3, 2026

LLMjacking detection: watch credential probes and unauthorized model enablement

Why it matters

Mandiant’s 2026 investigations trace stolen cloud credentials through privilege changes, model-service enablement and resale of inference access. Some actors validated keys with single-token requests before scaling abuse. The report supplies cloud audit events and logging prerequisites for hunting these stages; billing spikes can arrive after access and persistence are established.

My takeaway: Verify that inference logs are enabled and actually capture an authorized test request. Correlate unusual low-volume probes with new keys, service enablement and logging changes; legitimate health checks can look similar. Restrict who can enable models or mint credentials, enforce available usage limits, and investigate persistence as well as revoking exposed keys. Treat budget alerts as notifications, not guaranteed spending stops.
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