RoryOF wrote:To prevent this happening again (or at least minimise the possibility of its recurrence), one should be leisurely in powering off the computer. As computers now cache data, but in software and hardware buffers, to appear to speed up their reaction, one must go through the formal shut down procedure for one's operating system, then wait until all disk activity has ceased before powering off. This only takes a few extra seconds, but even cumulatively, such extra seconds are very much less than the time to recover or rebuild a damaged file. Also, one should observe the USB device removal protocol, again waiting the few seconds until disk activity has ceased after the "you may now safely remove the device" message.
These protection features are just switches to prevent accidental action. The features are not intended to provide any secure protection. For example, by exporting a sheet to another file format, a user may be able to surpass the protection features. There is only one secure protection: the password that you can apply when saving an OpenDocument file. A file that has been saved with a password can be opened only with the same password.
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