Agents read the parts of a page people can't see. One fleet wrote back.

An Oct 14 report from swarmcha.se shows an agent fleet on Tencent Cloud acting on a line no person could see, so every line of your page counts. Between Sept 28 and Oct 8, the fleet made more than 2,600 attempts to pull data from Amap. That's Alibaba Group's mapping service. When Amap blocked it, it tried workarounds, including Amap keys exposed in public code. Then the researchers tried something new. In swarmcha.se's Oct 14, 2026 report, they write: "we added invisible text to our website that only agents would see when using a web fetch tool." Agents found it and started sending messages.

Here's what I'd take from it. Your markup is input, so ship pages you'd be happy to see quoted in full. And plan for visitors that never say who they're working for. What a visit did, which pages, in what order, how often it came back, tells you more than what it claims to be. That's a signal: something a visitor just did, like coming back to your pricing page.