Anthropic published the prompt injection failure rates that enterprise security teams have been asking every vendor for

Anthropic's Opus 4.6 system card breaks out prompt injection attack success rates by surface, attempt count, and safeguard configuration — data that OpenAI and Google have not published for their own ...
Search Engine Land

Hidden prompt injection: The black hat trick AI outgrew

For a brief moment, hiding prompt injections in HTML, CSS, or metadata felt like a throwback to the clever tricks of early black hat SEO. Invisible keywords, stealth links, and JavaScript cloaking ...