Spam is the electronic version of “junk mail.” The term spam refers to unsolicited, often unwanted, email messages. Spam does not necessarily contain viruses—valid messages from legitimate sources could fall into this category.

Before submitting your name, email address, or other personal information on a website, look for the site's privacy policy. This policy should explain how the information will be used and whether or not the information will be distributed to other organizations.

What is malicious code? Malicious code is unwanted files or programs that can cause harm to a computer or compromise data stored on a computer. Various classifications of malicious code include viruses, worms, and Trojan horses.

Keep anti-virus software up to date to help protect your systems and information.

There are some simple habits you can adopt that, if performed consistently, may dramatically reduce the chances that the information on your computer will be lost or corrupted.

Passwords are a common form of authentication and are often the only barrier between you and your personal information. There are several programs attackers can use to help guess or crack passwords.

Risk management and stakeholder engagement are key elements of TSA's surface transportation initiatives. Unlike in aviation, where TSA has employees performing security functions, we utilize stakeholder partnerships, grant funding and rulemaking to enhance security in surface modes.

If your computer gets infected with malicious code, there are steps you can take to recover.

The security settings within your browser are an important safeguard.