TL;DR
Cloudflare publishes results of independent Big 4 audit confirming 1.1.1.1 resolver privacy commitments, including IP anonymization within 25 hours and no data sharing with third parties.
Key Points
- Independent Big 4 accounting firm audit confirms all core privacy commitments met
- Source IPs anonymized and deleted within 25 hours; no user data sold or shared
- Only 0.05% of network traffic (with IPs) sampled for troubleshooting and attack mitigation
- First independent examination since 2020; scope expanded to cover evolved infrastructure and Cloudflare Radar
Why It Matters
For infrastructure engineers and sysadmins evaluating DNS resolvers, independent third-party verification provides concrete assurance beyond marketing claims. This sets a transparency standard for privacy-critical infrastructure that other major public DNS providers have not matched, making it relevant for security-conscious deployments.
Source: blog.cloudflare.com