# Chapter 7: Physical Security

See also:
- ISO 27002 A 7

## Physical properties
Social engineering remains to this day a very effective way of accessing the inside of a network.

- Access restriction
- Surveillance
- Authentication Maintenance (e.g. change door access code after change in staff)
- Secure physical media (e.g. lock door where backup tapes are stored)

## Operational properties
- Identify Visitors and Contractors
- Visitor and contractor actions (sign-in/ escort/ sign-out)

## Training and awareness
- Tailgating
- Badge cloning
- Malicious media
- Social engineering (‘pretexts’)


