Hello friends,

Earlier this year, we announced the new OONI Anonymous Credential System to cryptographically protect the OONI dataset from the (intentional or unintentional) submission of faulty measurements, and to strengthen trust in OONI data.

Today, we published a new blog post which shares:
* New heuristics and strategies for mitigating faulty measurements
* An evaluation of the effectiveness of our new Anonymous Credential System

Read our blog post here: https://ooni.org/post/2026-faulty-measurements/

You can also learn more about the OONI Anonymous Credential System through our previous blog posts:
* Announcing OONI's New Anonymous Credential System: https://ooni.org/post/2025-announcing-ooni-new-anonymous-credential-system/
* Requirements for OONI’s Anonymous Credentials System: https://ooni.org/post/2025-requirements-for-oonis-anonymous-credentials/
* Probe Security Without Identification: https://ooni.org/post/2025-probe-security-without-identification/

We thank Michele Orrù, a talented cryptographer and expert in digital signatures and zero-knowledge proofs who worked with us on designing and implementing anonymous credentials within OONI Probe.

We also thank the OTF for supporting this work.

~ OONI.