In addition to preventing spyware from being installed while an employee is away from his desk for a coffee break, lunch, or a meeting, a policy mandating that all employees lock their computer systems with a screen saver password or similar method will substantially mitigate the risk of an unauthorized person being able to access a worker's computer. No one slipping into the person's cubicle or office will be able to access any of their files, read their email, or install spyware or other malicious software. The resources necessary to enable the screensaver password are nil, and the benefit of protecting employee workstations is substantial. The cost-benefit analysis in this circumstance should be a no-brainer.