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IT Baseline Protection Manual - The Information Warfare Site

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Threats Catalogue - Force Majeure Remarks<br />

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T 1.9 Loss of data due to intensive magnetic fields<br />

Typical data carriers with a magnetic storage medium include floppy disks,<br />

removable disks, cartridges and tapes. <strong>Information</strong> is added to them by means<br />

of read/write heads. Such magnetised data media are sensitive to interfering<br />

magnetic fields, and for this reason they should not be brought into the<br />

vicinity of such radiation.<br />

<strong>The</strong> data loss caused by this radiation depends in part on its intensity. This is<br />

particularly critical for files which, due to their internal formatting, are<br />

rendered completely useless even due to small variations (e.g. Postscript files,<br />

data bases).<br />

Examples of sources of magnetic interference are:<br />

- Electromotors<br />

- Transformers<br />

- Magnetic ID-card reading units.<br />

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<strong>IT</strong>-<strong>Baseline</strong> <strong>Protection</strong> <strong>Manual</strong>: Otober 2000

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