In computers, something forensic is generally used later as evidence for or against you. Negatively, a law-enforcement official could use a key-logging tool on your computer to watch your activites and determine your passwords. Positively, forensic evidence can also be a reliable alibi in a court case where your location is in question (i.e. you logged onto a remote computer from your home at 2:00 p.m. while the murder took place in the Study with Colonel Mustard and the Wrench…)
Forensic usually relates to criminal cases but can come into play with civil and intellectual property lawsuits, especially in issues of Prior Art; forensic evidence can prove that you came up with the idea first.
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