Password Sentry (PS) is the "must-have" application for every paysite webmaster. We started 16 years ago in 1999. Password Sentry was groundbreaking as the first application of its kind. Password Sentry continues to be groundbreaking as we grow and re-invent Password Sentry to continue to be the leader in the industry - exceeding anything our competition offers. Password Sentry is an affordable and reliable tool that will protect your site from password trading and dictionary / brute force attacks: saving you hundreds or thousands of dollars each year in extra bandwidth, and lost sales.