# PS – Physical Security

- Web page: https://c5.patrickscheid.de/en/ps/

- [PS-01 Physical Security and Environmental Control Requirements](https://c5.patrickscheid.de/en/ps-01/index.html.md): 11 sub-criteria (6 basic, 5 additional), changed since C5:2020
- [PS-02 Redundancy Model](https://c5.patrickscheid.de/en/ps-02/index.html.md): 5 sub-criteria (3 basic, 2 additional), with customer criteria, changed since C5:2020
- [PS-03 Perimeter Protection](https://c5.patrickscheid.de/en/ps-03/index.html.md): 7 sub-criteria (6 basic, 1 additional), changed since C5:2020
- [PS-04 Physical Site Access Control](https://c5.patrickscheid.de/en/ps-04/index.html.md): 3 sub-criteria (3 basic), changed since C5:2020
- [PS-05 Protection against Threats from Outside and from the Environment](https://c5.patrickscheid.de/en/ps-05/index.html.md): 4 sub-criteria (4 basic), changed since C5:2020
- [PS-06 Protection against Interruptions caused by Power Failures and similar Risks to Supply Facilities](https://c5.patrickscheid.de/en/ps-06/index.html.md): 7 sub-criteria (3 basic, 4 additional), changed since C5:2020
- [PS-07 Surveillance of Operational and Environmental Parameters](https://c5.patrickscheid.de/en/ps-07/index.html.md): 2 sub-criteria (2 basic), unchanged since C5:2020
- [PS-08 Workplace Security Requirements](https://c5.patrickscheid.de/en/ps-08/index.html.md): 1 sub-criterion, new in C5:2026

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Source: BSI C5:2026, machine-readable edition v1.0.1, © Federal Office for Information Security (BSI) 2026, reproduced unchanged under CC BY-ND 4.0 (https://creativecommons.org/licenses/by-nd/4.0/). Change notes: BSI C5:2026 Changelog, © BSI 2026, CC BY-ND 4.0. Unofficial presentation, not affiliated with BSI.