CAPTCHA on AdSense Login

If you make a mistake, this comes up

[androidtech]

Just a piece of trivia. If you happen to make a mistake while logging in to the AdSense control panel, you have to pass a CAPTCHA test on your next attempt.

[marcel]

Yes, Analytics, Gmail and Sitemaps do it too... :o)

[rubenski]

After 3 failed login attempts if I remember correctly...

[seoram]

I feel google doing a simpler job of asking the user for CAPTCHA test. I have seen few others ask for email thats sick process

[noodlebox]

to prevent brute force.