IT Baseline Protection Manual - The Information Warfare Site

Threats Catalogue Deliberate Acts Remarks
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T 3.15 Improper use of answering machines
There is a risk of the incorrect use of an answering machine. Some answering
machines are fundamentally prone to incorrect use; because they have
function keys with double or even triple assignments for example. This
problem is compounded by the keys being so small and close together that
incorrect handling becomes almost inevitable.
It may happen that an answering machine will ignore incoming calls as a
result of incorrect use. This could happen, for example, if the machine is
turned off or the outgoing message is deleted inadvertently by the pressing of
a button.
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IT-Baseline Protection Manual: Oktober 2000