IT Baseline Protection Manual - The Information Warfare Site

Threats Catalogue Deliberate Acts Remarks
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T 5.8 Manipulation of lines
Apart from the interception of lines (cf. T 5.7 Line tapping), lines may be
manipulated in the pursuit of other objectives as well.
- Frustrated employees could manipulate lines in such a way that nonpermitted
connections are established within and outside the organisation's
own IT set-up. The aim here is often simply to disrupt IT operations.
- Lines could be manipulated so that they can be used privately at the
expense of the network operator. Apart from the charges incurred as a
result of use of communication lines which are liable to charges, lines and
resources would be blocked by such private use.
- As a result of the manipulation of lines, it might become possible for data
transmitted over those lines to be modified to the advantage of the
perpetrator. The effects of manipulation can be especially damaging in
processes relevant to accounting, in payroll applications, and in all IT
applications which directly or indirectly relate to the management of
material assets.
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IT-Baseline Protection Manual: Oktober 2000
Non-permitted
connections
Private usage
Manipulation of
transmitted data