"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
To avoid scanning items more than once, use the --backtrack-protection option. This option prevents symlinks being followed more than once when the target is a directory that has already been scanned. However, symlinks to regular files will still be followed more than once.
NOTE: The above options are applicable to on-demand scans executed with sweep (SAV4) or savscan (SAV7/9)
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