Objects (infected files, spam e-mails) rejected by the content vectoring system are usually deleted. However, in some environments this is not acceptable: these objects might be temporarily stored in a location where they can do no harm (that is, in the quarantine), until it can be verified that they do not contain any useful information. The reason for using a quarantine is that occasionally information in a file might be needed even though the file is infected (disinfecting a file is not always possible, and sometimes may damage the non-infected parts of the file as well). Also, virus and spam filters are not unerring; occasionally they might detect a file/e-mail as infected/spam even when it is not. If rejected objects are simply deleted, important information might be lost in these cases.