The lawful seizure, acquisition, analysis, reporting, and safeguarding of data from digital devices that may contain information of evidentiary value to the trier of fact in criminal events is known as:.

Digital criminal forensics.

Explanation:

Digital criminal forensics refers to investigations that is aimed at identifying and retrieving data, facts or evidence found on digital devices such as computers, hard drives and digital storage devices, mobile phone, server, or network. Digital criminal forensics aims at preserving information that may be used as evidence in court trial of digital crimes or attack.