2007-03-26 04:59:20 · 6 answers · asked by nagendra 1 in Computers & Internet ➔ Internet
some people write software to sign up for, say, mail accounts or whatever. The software will act like a user and visit the mail site (like mail.yahoo.com) fill in forms, click enter, all that. That software isn't smart enough to read that gif or jpg and "see" the numbers or letters. That kind of software is a type of bot or spider and the security in this case is to prevent bots or spiders from using the web interface.
2007-03-26 05:04:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
that is to stop automated "bot" programs from accessing the site.
One reason someone might want to "bot" enter a site is to try every possible combination to a password (brute force attack). To prevent this, the administers of the site post a distorted picture of a few charicters to prevent an automated process of deciphering the picture to enter the charicters and, in turn, enter the site.
2007-03-26 05:06:24 · answer #2 · answered by Anonymous · 1⤊ 0⤋
To make sure bot programs can not sign up for services. A human has to actually veiw the code and punch it in.
2007-03-26 05:03:26 · answer #3 · answered by cduleck 2 · 0⤊ 0⤋
It is to safeguard against automated comment spam submission, it ensures a person is actually entering the information.
2007-03-26 05:01:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋
to make sure that a real human is signing in, agenuine request for the service or account
2007-03-26 05:08:26 · answer #5 · answered by Dreamweaver 5 · 0⤊ 0⤋
yep. it's to make sure that you are an actual person.
2007-03-26 05:03:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋