Facebook used a demon vagina tattoo as a CAPTCHA
For security reasons, of course.
CAPTCHA is dead—the puppy checkbox is forever
It's going to be easier than ever to prove you're a human on the Internet.
5 CAPTCHA alternatives to replace your least favorite security tool
As bots get better at beating CAPTCHA, developers seek easy-to-use alternatives.
Snaptcha: It's not a typo, it's a security upgrade for your secret messages
Finally, Snapchat is addressing its security failings... with a cutesy take on the CAPTCHA.
A breakthrough in AI solves CAPTCHAs better than most humans
A new program could solve CAPTCHAs with near-100 percent accuracy.
Why Twitter can't win its war on spam
Why invest in Twitter’s initial public offering when you could pick up a couple thousand new followers instead?