Start typing a username on a sign-up form and, before you've even reached the last letter, a little message shows up underneath telling you it's taken. Change a letter or add a number and it flips to available, as if the site had been waiting for you. I got curious about how that works on a site with millions of accounts, maybe billions. I'd seen... Weiterlesen: That Username Is Taken. How Did the Form Know Before I Finished Typing?
Intelligence View
⚡ tsecurity.de Intelligence
That Username Is Taken. How Did the Form Know Before I Finished Typing?
Start typing a username on a sign-up form and, before you've even reached the last letter, a little message shows up underneath telling you it's taken. Change…