Nicolas Christin

A Public Comment on NCCoE's White Paper on Privacy-Enhancing Identity Brokers

2016 · arXiv (Cornell University)

The National Cybersecurity Center of Excellence (NCCoE) (in the United States) has published on October 19, 2015, a white paper on "privacy-enhanced identity brokers." We present here a reply to their request for public comments. …

Blockchain Amplification Attack

2024 · arXiv (Cornell University)

Strategies related to the blockchain concept of Extractable Value (MEV/BEV), such as arbitrage, front-, or back-running create strong economic incentives for network nodes to reduce latency. Modified nodes, that minimize transaction validation time and neglect …