F-Secure antivirus quarantine directory This directory is intended for storing infected files and related metadata in a form where they cannot cause harm. Quarantined files are stored as tar (short for "tape archive") archives. As the quarantined files may be dangerous, you should not open, extract, or copy quarantine archive files. Quarantine should be accessed and managed through the "open quarantine" link in the F-Secure product user interface. Quarantine archive folder is protected against accidental access by file system access controls (systems with NTFS partition) or hidden attribute (FAT32).