Updated October 28, 2026.
Data privacy in marketing, in short: The “cookieless future” did not arrive the way it was predicted. Google decided in April 2025 to keep third-party cookies in Chrome and in October 2025 retired most Privacy Sandbox technologies. But Safari, Firefox and Brave already block third-party cookies, privacy laws require consent in many markets, and ad blockers and app tracking prompts reduce signal. The durable strategy is still first-party data, consent-based measurement and server-side tracking.
What actually happened to third-party cookies
| Date | Event |
|---|---|
| 2020 | Google announced plans to phase out third-party cookies in Chrome |
| 2021–2024 | Deadline delayed several times |
| January 2024 | Cookies restricted for 1% of Chrome users as a test |
| April 2025 | Google kept its current cookie approach, with no new standalone prompt |
| October 2025 | Most Privacy Sandbox APIs retired due to low adoption |
Why marketers should still plan for less tracking
- Other browsers block by default: Safari and Firefox restrict third-party cookies, and Safari also limits some first-party cookies set by scripts.
- Consent rules: GDPR, the ePrivacy rules and a growing list of US state privacy laws require consent or opt-outs.
- Apple’s App Tracking Transparency limits cross-app tracking on iOS.
- Ad blockers and privacy tools remove tracking scripts.
What to do now
1. Build first-party data
Newsletters, accounts, loyalty programs, quizzes and events give you data people chose to share. See interactive content ideas.
2. Use a proper consent setup
A certified consent management platform, plus Google Consent Mode v2 if you advertise with Google in the EEA or UK.
3. Move measurement server-side
Server-side tagging and conversion APIs (Meta Conversions API, Google enhanced conversions) send consented data more reliably than browser pixels.
4. Use contextual targeting
Place ads by page topic rather than by user history.
5. Measure with models, not only clicks
Marketing mix modeling and lift tests estimate impact where user-level tracking is incomplete.
Bottom line: Treat data privacy in marketing as a trust advantage, not a legal chore. Clear consent and useful first-party data make data privacy in marketing part of your brand. Review your data privacy in marketing setup whenever you add a new tool that collects customer data.
Frequently asked questions about data privacy in marketing
Is Google still removing cookies from Chrome?
No. As of 2025, Chrome keeps third-party cookies, with user controls in its settings. Incognito mode blocks them.
Do I still need a cookie banner?
In the EU, UK and many other places, yes, for non-essential cookies, regardless of Chrome’s decision.
Sources
Related: marketing KPIs
