To move an undesired file such as a virus-infected file or spyware to a folder that is not easily accessible by regular file management utilities. The quarantine option is available in antivirus software so that companies can keep a record of which users have been infected, where the file came from and to possibly send the virus to the antivirus vendor for inspection. Spyware blockers quarantine files so that they can be restored if required. See antivirus program, disinfect and spyware blocker.