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Claude Opus 5 Cuts Indirect Prompt Injection Attack Success to 2% in New Benchmark Analysis

📅 10 August 2026 at 05:39 UTC📰 Cyber Security NewsView original source ↗
Claude Opus 5 Cuts Indirect Prompt Injection Attack Success to 2% in New Benchmark Analysis

Anthropic’s Claude Opus 5 has recorded the lowest indirect prompt injection attack success rate in Gray Swan’s latest benchmark, according to results provided in its system card. The model reduced an attacker’s chance of success within 15 attempts to 2.0%. This result places Opus 5 ahead of every other model tested, including earlier Claude releases […] The post Claude Opus 5 Cuts Indirect Prompt Injection Attack Success to 2% in New Benchmark Analysis appeared first on Cyber Security News.

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