Bots pose as AI agents, AI agents pose as humans, and defenses believe both

An online marketplace logged 414,210 visits over one week in October from traffic posing as a widely used consumer AI agent, all aimed at the sign-in page and all returning errors, according to Help Net Security. The traffic was a credential stuffing operation running stolen username and password pairs against the site in bulk, and the fake agent's volume reached about 1.5 times that of the real agents. The case illustrates defenses struggling to separate bots impersonating AI agents from AI agents impersonating humans.

Over one week in October, an online marketplace took 414,210 visits from traffic wearing the name of a widely used consumer AI agent. Every visit went for the sign-in page, and every one returned errors. Behind the name was a credential stuffing operation, with attackers running stolen username and password pairs against the site in bulk. The fake agent was busier than the real ones. Its volume came to about one and a half times … More https://www.helpnetsecurity.com/2026/11/12/bots-ai-agent-impersonation/ The post Bots pose as AI agents, AI agents pose as humans, and defenses believe both https://www.helpnetsecurity.com/2026/11/12/bots-ai-agent-impersonation/ appeared first on Help Net Security https://www.helpnetsecurity.com .