The perfect PIN is not four digits and not associated with your life, like an old telephone number. It's something easy for you to remember and hard for other people to guess.
I did get a huge endorphin rush when I was able to crack a system because it was like a video game.
Use a personal firewall. Configure it to prevent other computers, networks and sites from connecting to you, and specify which programs are allowed to connect to the net automatically.
I keep my stuff updated all the time. Being in the security industry, I keep up to date with securities.
So the ethic I was taught in school resulted in the path I chose in my life following school.
I love solving puzzles, I love finding my way around obstacles, and I love learning new things about technology.