Explanation

Cable locks - Adding a cable lock between a laptop and a desk prevents someone from picking it up and walking away Proximity badge + reader Safe is a hardware/physical security measure Mantrap can be used to control access to sensitive areas. CCTV can be used as video surveillance.
Biometric reader can be used to control and prevent unauthorized access. Locking cabinets can be used to protect backup media, documentation and other physical artefacts.

A person who gains unauthorized access to computer files or networks in order to further social or political ends.

Explanation

When dealing with multiple issues, address them in order of volatility (OOV); always deal with the most volatile first. Volatility can be thought of as the amount of time that you have to collect certain data before a window of opportunity is gone. Naturally, in an investigation you want to collect everything, but some data will exist longer than others, and you cannot possibly collect all of it once. As an example, the OOV in an investigation may be RAM, hard drive data, CDs/DVDs, and printouts.
Order of volatility: Capture system images as a snapshot of what exists, look at network traffic and logs, capture any relevant video/screenshots/hashes, record time offset on the systems, talk to witnesses, and track total man-hours and expenses associated with the investigation.