Any time you walk away from your computer and don't lock it or log off, you're giving others access to use your computer as you. They could send email from your account, tamper with your files (locally and on the file server), and access confidential data. This poses a security risk for both you and your association.
The best idea is to lock your computer whenever you walk away. Locking your computer will not shut down any programs or close any files you are working on. Your user name and password will get you right back where you left off.
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