---
title: Privacy and data protection controls
slug: personalization/docs/privacy-and-data-protection-controls
docTags: 
createdAt: 2026-08-05T20:59:35.977Z
---

- Optimizely Web Experimentation
- Optimizely Personalization

You should know about privacy and data protection controls, especially if you are subject to Europe’s General Data Protection Regulation (GDPR) or the California Consumer Privacy Act (CCPA).

## Anonymize IP addresses

You can [anonymize visitor IP addresses](docId:6IRj-G36V02vo_nOFHOeO) before Optimizely stores event data, either by project or by account.

## Control cookies and user IDs

Optimizely Web Experimentation and Optimizely Personalization use a cookie to identify visitors to your site. [See cookies and localStorage ](docId\:WDI76OY7DoWjpdq_kjv56)to learn about the purpose and behavior of key cookies Optimizely uses. You can integrate tag management and cookie banner tools to customize your approach to cookie compliance. You can also [set a cookie expiration](docId\:bCslTXNyu11D_yuBScS57) through APIs.

Optimizely Web Experimentation and Optimizely Personalization let you set your identifiers.

## Help with data subject requests

[The Optimizely Trust Center](https://www.optimizely.com/trust-center/security/) describes how Optimizely can help you respond to an EU or California data subject’s request to access or delete their personal data. 

## Data security

[Optimizely's Security page](https://www.optimizely.com/trust-center/security/) describes Optimizely’s technical and organizational measures for data security. Optimizely also [encrypts data at rest](docId:_0btO49oeDUGXc3Mks0_C).

## Other project settings

You may prefer a higher level of privacy for the functionality and information handled by the Optimizely snippet. Learn more about [project settings](docId\:BgxHHXMjh1J_RuV_wiMgy) that can help you adjust the level of privacy protection applied to your experiments.