Articles

 CAPTCHA

A CAPTCHA (an acronym for "Completely Automated Public Turing test to tell Computers and Humans...

 Email Harvesting

What is Email Harvesting: Email harvesting is the process of obtaining a large number of...

 FQDN

A fully qualified domain name consists of a host and domain name, including top-level domain. For...

 PTR Record

PTR (pointer) Creates a pointer that maps an IP address to a host name for reverse lookups.