Windows XP SP2 contains a new set of security icons that can help you recognize potential security risks and choose appropriate security settings. Here's what each new icon means.
Indicates important security
information and settings.
Notifies you of a potential
security risk.
Situation is more secure.
Your computer is using recommended security settings.
Warning: situation is
potentially harmful. Consider adjusting security settings to enhance the
security of your computer.
Your computer's current
security settings are not recommended.