Reader's Favorite Articles
Recent Hits All Time Matt's Favorites

Written Lessons

You are viewing a single article.

Lesson 2 Vocab 14 - CAPTCHA

by
Although pronounced as the word Captcha, this is actually a contrived acronym for Completely Automated Public Turing test to tell Computers and Humans Apart. The term was first conceived by 4 professors at Carnegie Mellon University in 2000 as a way to combat "bots" that were attacking website forms.

Common place attacks on every website include a "bot" filling out your Contact Us form and sending you pornographic information, or trying to sell you Viagra, or just random garbage characters. Whenever you get random garbage through your contact form it's usually because the bot was attempting to do something bad to your website.

The only way to fight attacks from a bot is to make the user prove they are human using a CAPTCHA technique. Typically the CAPTCHA presents itself as a cluster of characters, numbers or words that we can read on the screen, but a computer cannot. If the wrong CAPTCHA code is entered, the form will not submit, thus preventing unwanted pornographic information from getting to you, but more importantly preventing something bad from happening to your website.




Like This Article? Please Share!

Like Our Site? Follow Us!



AT: 01/22/2010 01:52:04 PM   LINK TO THIS ARTICLE
0 Comments:

Post a Comment
Name:

Check here for Anonymous
Email

Website:

 
Please contact me at the phone number and address below
Phone Number

Address:

 
Comment:

 
User Verification
2 2 4 1 4 7 1 7
Please enter the number you see in the box.
[ What's This? ]
Sign Up For Emailed Daily Gold Nuggets
"...serious kudos to you. We love your straight talk, pertinent information and plain language. I don't know how many industries have something of jWAG's caliber available, but I learn from the emails every day. Really, really nice work, and very appreciated."
-Cheryl Herrick, Global Pathways Jewelry