When building Arbitrum, protecting users against front-running was always a top level design principle, right next to security. Over the years, I’d very often get asked why this was so important and the answer was always twofold 1. I view it as part of our basic duty to protect users. 2. In traditional markets, front-running is illegal. Regulators might not have caught up to crypto yet, but they will and the same principles would and should apply.