You can never protect yourself 100%. What you do is protect yourself as much as possible and mitigate risk to an acceptable degree. You can never remove all risk.

He was enrolled at Los Angeles Pierce College and USC. He was released on January 21 2000. After a friendly bus driver told him where he could buy his own ticket punch he could ride any bus in the greater LA area using unused transfer slips he found in the trash.

Kevin David Mitnick (born on August 6 1963) is an American computer security consultant author convicted criminal and hacker. In the late 20th century he was convicted of various computer and communications-related crimes.