Sarah Meiklejohn

Sarah Meiklejohn is a cryptography and security researcher affiliated with University College London’s Information Security Group and the Initiative for Cryptocurrencies and Contracts. Her research spans cryptocurrencies, cryptography, and the security implications of public-ledger systems.

Following evidence in public ledgers

Her work on Bitcoin and related ecosystems combines empirical measurement with security analysis. It shows that public transaction records can expose relationships and support investigative inferences even where systems are described as anonymous.

Security relevance

By applying rigorous analysis to cryptocurrency infrastructure and underground markets, this work connects cryptographic mechanisms to the observable behavior of real systems.

Timeline

• 2013Co-authors A Fistful of Bitcoins, an empirical analysis of Bitcoin.
• 2014Completes doctoral work on secure systems.
• 2010s-2020sHolds research and academic roles in cryptography and security.
• 2025Biography records an ongoing affiliation with UCL’s Information Security Group.