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file protection

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Preventing accidental erasing of data. Physical file protection is provided on the storage medium by turning a switch, moving a lever or covering a notch. Writing is prohibited even if the software directs the computer to do so. For example, on half-inch tape, a plastic ring in the center of the reel is removed (no ring-no write).

Logical file protection is provided by the operating system, which can designate files as read only. This allows both regular (read/write) and read only files to be stored on the same disk volume. Files can also be designated as hidden files, which makes them invisible to most software programs.

If You're Holey, You're Protected!
On a high-density 3.5" diskette, when both holes are showing, you are "protected."
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The latest version of PKZIP includes password-based strong encryption, providing individual users with an easy-to-use tool for ad hoc file protection.
PKWARE releases new version of PKZIP for windows by EDP Weekly's IT Monitor
For database file protection, click on Tools, Security and Set Database Password.
Guarding computer data by McFadden, Patrick James / Journal of Accountancy
Content owners submit video files to the service in a wide variety of formats, including AVI, WMV, MOV, and MPG, and then specify file protection settings, such as the domain in which a video is authorized to play and an expiration date for the video file.
IndustryNext Launches enScramble(TM), a New Service for Digital Video ... by Business Wire
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