First AI-Powered Ransomware “PromptLock” Uses OpenAI gpt-oss-20b for Encryption

PromptLock, a novel ransomware strain discovered by the ESET Research team, marks the first known instance of malware harnessing a local large language model to generate its malicious payload on the victim’s machine. Rather than carrying pre-compiled attack logic, PromptLock ships with hard-coded prompts that instruct a locally hosted OpenAI gpt-oss:20b model—accessed via the Ollama […]

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