Don't be that 1 sucker out of every 5 targets

Here is a paragraph from a site dedicated to helping people steer clear of con men. I had assumed that 1 person out of a hundred might get taken, but they say "up to 20%."

"The advent of digital communication has given con artists a whole new way to prey upon the public, and one of their favorite new scams is phishing, a malicious form of computer fraud conducted for the purposes of information or identity theft. Phishing uses e-mail messages that claim to come from legitimate organizations, such as online banks, social networking sites, auction sites or IT administrators, and asks users to provide sensitive information, including passwords, usernames and account details. Because these messages look authentic, up to 20% of all recipients respond to them, resulting in identity theft and dire financial losses. Phishing is a particularly effective low-risk scam because it allows con artists to connect with millions of potential victims at a time while maintaining a high level of anonymity."