“Somebody could send you an office document or a PDF file, and as soon as you open it, it's a booby trap and the hacker has complete control of your computer. Another major problem is password management. People use the same password on multiple sites, so when the hacker compromises one site, they have your password for everywhere else.”

American computer security consultant, author, and convicted hacker

Kevin Mitnick was an American computer security consultant and author, known as a convicted hacker. He was arrested in 1995 for computer and communications-related crimes, and later spent five years in prison after being convicted of fraud and illegally intercepting communications. His arrest, trial, and sentence drew controversy, along with the coverage that followed. After leaving prison, he worked in computer security, running Mitnick Security Consulting, LLC and taking part in other security businesses.