Someone who is using a residential proxy network, headless browsing, and/or TLS fingerprint manipulation to evade rate limits and other controls to issue large volumes of automated requests under a deceptive UserAgent string isn't difficult to describe and differentiate versus a normal user using a UA.

The proposed text of the bill is rather straightforward. It turns more on the "stealth" bit than "bot".

(a) Prohibition.—A person may not—

(1) deploy, direct, or cause to be deployed, a stealth bot to access a website, digital platform, or online service in a manner that is reasonably likely to damage, impair, or burden the technical or commercial operation of a website or other internet service; or

(2) intentionally misrepresent, conceal, or obscure the nature of the bot to appear as a human user for use in connection with a generative AI model or service.

(6) STEALTH BOT.—The term “stealth bot” means a bot that accesses, retrieves, scans, indexes, scrapes, or otherwise interacts with a website, digital platform, or online service without prior disclosure of its identity and purpose, in particular by—

(A) failing to identify itself including through a valid and accurate user-agent string; or

(B) failing to disclose the specific nature and purpose of the bot, including any proposed use and purpose of page content (including text and data mining, search indexing, inferencing, artificial intelligence development, support, or operations (such as training, fine tuning, retrieval augmented generation)) or other automated processing at the time access is requested and in a format that the website operator can access.

> Someone who is using a residential proxy network, headless browsing, and/or TLS fingerprint manipulation to evade rate limits and other controls to issue large volumes of automated requests under a deceptive UserAgent string isn't difficult to describe and differentiate versus a normal user using a UA.

So then why isn't it trying to prohibit making multiple requests from different IP addresses in a residential proxy network, rather than the thing it actually does?

> The proposed text of the bill is rather straightforward. It turns more on the "stealth" bit than "bot".

Not really, look at the definition of "STEALTH BOT" -- the only thing that nominally distinguishes it from a browser is the word "bot" which isn't itself defined, because the phrase "without prior disclosure of its identity and purpose" is something that a normal web browser doesn't do either.

It can't even get it out of it via "a valid and accurate user-agent string", both because that clause says or and it still fails the second one, and because "a valid and accurate user-agent string" is a nonsense phrase. The Safari user agent strings start with "Mozilla" even though it's not. The Android ones do the same and then include "AppleWebKit" and "Mobile Safari" too. A browser extension uses the user agent string of the browser regardless of what the extension does. When Debian packages their version of Firefox, its user agent string says Firefox and not Debian.

User agent strings don't have a registry. "Valid" has no meaning and "accurate" is contrary to the default behavior of common browsers.

I am dealing with the bots described in your first paragraph running a primary information source website. They are relentless and cost us thousands of dollars a month in wasted resources. They are almost certainly doing the bidding of much larger corporations as they are extremely sophisticated and seem to have infinite bots to send your way.

I am sure when they get unmasked all of the big tech companies contracting them will have plausible deniability