A security device for a universal emergency power-off (UEPO) switch of a computer system enclosure involves a plate body having a first and second portion, the first portion has a length and width sufficient to allow it to be rigidly constrained, the second portion has: a surface including multiple openings to allow for ventilation while substantially impeding access to the UEPO switch, a port through which system identification information can be viewed, and a hand grip near an end of the second portion including surface texturing sufficient to capture and retain epithelial cells from a person who grips the hand grip. The plate body also has a deformation region such that, when the first portion is rigidly constrained, application of a force, directed within a range from 0° to about 45° from a right angle to the surface, will cause plastic deformation of the plate body within the deformation region.
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