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Submitted via IRC for Runaway1956
The old reCAPTCHA system was pretty easy—just a simple "I'm not a robot" checkbox would get people through your sign-up page. The new version is even simpler, and it doesn't use a challenge or checkbox. It works invisibly in the background, somehow, to identify bots from humans. Google doesn't go into much detail on how it works, only saying that the system uses "a combination of machine learning and advanced risk analysis that adapts to new and emerging threats." More detailed information on how the system works would probably also help bot-makers crack it, so don't expect details to pop up any time soon.
[...] When sites switch over to the invisible CAPTCHA system, most users won't see CAPTCHAs at all, not even the "I'm not a robot" checkbox. If you are flagged as "suspicious" by the system, then it will display the usual challenges.
Source: https://arstechnica.com/gadgets/2017/03/googles-recaptcha-announces-invisible-background-captchas/
(Score: 2) by frojack on Friday March 10 2017, @10:19PM
Technomumble to disguise the fact that they are simply able to collect enough data now to figure this out
That's is probably an over simplification.
After all, your apparent IP and identity may say nothing about you. Everybody is behind nat these days, probably 50% of all windows machines have some malware installed. There is no reason to believe you can determine anything even knowing exactly which machine the transaction came from and even knowing (as they might) that the user is sitting at the keyboard typing an email into the gmail web interface at the time.
You don't have to defend against people. You have to defend against individual processes.
No, you are mistaken. I've always had this sig.