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.