Security Windows Tips - Understanding security and safe computing - What are security alerts?

If Windows detects that your computer might need enhanced security in any one of the security areas—firewall, automatic updating, malware protection, or other security settings—you will see a notification every time you log on until the problem is fixed. Notifications are displayed in the notification area of the taskbar.
Click the notification to open Security Center, where you can learn how to fix the problem.
NoteTo turn off security notifications or hide the Security Center icon in the notification area, open Security Center, click Change the way Security Center alerts me, and then choose an option. Even if you turn off notifications, Security Center will continue to check and display security status.