Zenity

When Gartner publishes a first-ever Market Guide for a new technology category, it’s a signal that the category has crossed from experimental to enterprise-real. This February, Gartner did exactly that for Guardian Agents — AI systems designed to oversee, govern, and secure other AI agents. The broader coverage is arriving now, following a Hacker News article this week. The Headline Number (With Important Context) The most-cited figure from the report: ~70% of enterprises are already running AI agents in production. ...

Zenity Labs published a full disclosure today of PerplexedAgent — a zero-click attack chain targeting Perplexity’s Comet agentic browser. The technique requires no user interaction beyond opening a calendar invite. From there, an attacker can hijack the browser, exfiltrate local files, and steal credentials stored in password managers including 1Password. Perplexity has shipped two patches in response (both in February 2026). But Zenity’s disclosure goes beyond a single product vulnerability — the researchers are warning that the attack surface they found is inherent to the agentic browser category, not unique to Comet. ...