 Personal Identifiable Information, PII, is any information that can be used to identify an individual such as your phone number or social security number. Here are some ways sailors can protect their PII while at home and at work. Service members can safeguard their PII by practicing good cybersecurity at home and at work. That's generally the source which most PII's revealed these days. It can also be revealed by dumpster diving, people looking through people's trash. If you leave an envelope laying in the trash untreaded, that can be taken by anybody and used for anything. But also on the computer it means having a strong network, especially a home network, having strong passwords and having different passwords for all your different accounts. For more information about PII visit the Operation Security Facebook page.