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Reflections on TTBR & Everest

Debra BowenMatt BlazeClarkHokeMulligan

Core researchers and public officials reflect on California's landmark Top-to-Bottom Review (TTBR) and Ohio's EVEREST study, evaluating their legacy for election security.

Summary

The Origins of State-Sponsored Voting Security Reviews

In the mid-2000s, California Secretary of State Debra Bowen and Ohio Secretary of State Jennifer Brunner commissioned independent academic computer scientists to conduct unprecedented security reviews of all certified voting systems.

Methodologies of the TTBR and EVEREST Studies

Researchers including Matt Blaze reflect on the intensive red-team audits and source code reviews that exposed pervasive architectural flaws, default cryptographic keys, and exploitable hardware ports across major voting vendors.

Catalyzing National Election Security Reforms

The findings spurred a nationwide shift away from paperless Direct Recording Electronic (DRE) voting machines toward voter-verified paper ballots and established standards for independent security auditing.

Applying Historic Lessons to Current Election Threats

Evaluating the legacy of the TTBR and EVEREST studies highlights that open, adversarial security evaluation remains vital as election infrastructure incorporates modern connected technologies.

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