Manual Scan is an on-demand scan. Use the Manual Scan screen to scan for malware. Manual Scan also eradicates old infections, if any, to minimize reinfection. Manual Scan starts immediately and scans all the specified files. The duration of the scan depends on hardware resources and the number of files. During a Manual Scan, Trend Micro™ Security (for Macintosh) takes action against threats according to the actions set by the Administrator or user. To stop the scan, click Stop when the scan is in progress.