---
type: concept
title: ACL (Access Control List)
tags: [permissions, security, groupware]
related: [groupware-adressbuch]
created: 2026-07-01
updated: 2026-07-01
sources: ["output/rz_uni_greifswald_de_dienste_webdienste_groupware_module_adressbuch.md"]
---

# ACL (Access Control List)

In the context of the [[groupware-adressbuch]], an **ACL (Access Control List)** is a mechanism used to manage permissions for address books.

## Usage in Groupware
ACLs allow a user who has created an address book to define which other users are permitted to access or use that specific list. This enables collaborative contact management while maintaining control over who can view the data.

## Privacy Constraints
The use of ACLs is subject to data protection rules. Users must ensure that only data necessary for official business is shared; sensitive personal information (e.g., birth dates) must be excluded from shared address books.