Ever wonder how spammers get your e-mail address? And, as soon as you change it, they seem to find you again?

They use a technology called "web crawling." It is very similar to the technology used by Google to index web pages. But, in this case, they are looking for e-mail addresses.

If you have a personal webpage, changes are you've placed your e-mail address on the page to help your readers communicate back to you. Then, after getting tons of spam, you have regretted that decision.

There are several ways to prevent this.  This is one of them.

Email Protector - it takes your email address and encrypts it using RSA encryption (10 bit). Then, when a spambot crawls your site, it just sees some javascript functions and a garbled string that it doesn't understand. If a human clicks on the link, your address is decrypted and your readers can write to you! 

Color this strongly recommended ... and let me know what you think!

 

What the good guys see

What the bad guys see

E-mail me at

<script type='text/javascript'> // <!-- 1311162621 // This script is (C) Copyright 2004 Jim Tucek // Leave these comments alone! For more info, visit // www.jracademy.com/~jtucek/email/ function overthrow(steel,air,algebra) { steel += ' '; var qualification = steel.length; var whine = 0; var composer = ''; for(var goodbye = 0; goodbye < qualification; goodbye++) { whine = 0; while(steel.charCodeAt(goodbye) != 32) { whine = whine * 10; whine = whine + steel.charCodeAt(goodbye)-48; goodbye++; } composer += String.fromCharCode(see(whine,air,algebra)); } parent.location = 'm'+'a'+'i'+'l'+'t'+'o'+':'+composer; } function read(expert,file,philosophy) { expert += ' '; var fraction = expert.length; var farm = 0; for(var man = 0; man < fraction; man++) { farm = 0; while(expert.charCodeAt(man) != 32) { farm = farm * 10; farm = farm + expert.charCodeAt(man)-48; man++; } //document.write('&'); //document.write('#'); //document.write(see(farm,file,philosophy)); document.write(String.fromCharCode(see(farm,file,philosophy))); } } function see(shoulder,furnace,butterfly) { if (butterfly % 2 == 0) { matrix = 1; for(var name = 1; name <= butterfly/2; name++) { millenium = (shoulder*shoulder) % furnace; matrix = (millenium*matrix) % furnace; } } else { matrix = shoulder; for(var object = 1; object <= butterfly/2; object++) { millenium = (shoulder*shoulder) % furnace; matrix = (millenium*matrix) % furnace; } } return matrix; } // --> </script> <!-- Clicking on this link uses javascript to decrypt the email address --> E-mail me at <a href='javascript:overthrow("300 814 548 548 854 731 536 223 823 416 814 300 791 888 28 823 814 292 470 888 536 548 795 458 823 364 830 234 458 114 114 814 332 731 300 814 292 332 861 332 234 536 292 861 223 332 77 458 741 223 715 798",901,555)' onMouseOver="self.status=''; return true;" onMouseOut="self.status=' '; return true;"><script type='text/javascript'>read("300 814 548 548 854 731 536 223 823 416 814 300 791 888 28 823 814 292",901,555)</script></a>