A firewall is recommended. Steve Gibson explains how and why you need a personal firewall program if you share files over the Internet. Zone Guard 2.0. Most problems with internet privacy originate with email. Com Email site has lots of information on email related security and privacy issues.
Privacy means that only the intended recipient of a message can read it.
PGP however does provide a high degree of privacy. Every time you wander around the Internet, someone likely is tracking your activity. The End of Data You should always erase all data before throwing away old disks or computer hard drives. Magnetic disks can be degaussed by passing the diskettes over a strong magnetic field, completely erasing them. Degaussing the diskettes causes the magnetic particles to become thoroughly scattered on the media.