More than copying: CONSTRAINTDIAL continuously builds smart contract security tasks through protocol mutation

Existing evaluations may reward copied answers, such as attack code from public blockchain transactions. Researchers propose the CONSTRAINTDIAL framework, which automatically reconstructs contracts and continuously generates security tasks through protocol mutation, invalidating the original attack while preserving exploitability and normal functionality. Based on 203 public cases, they built 3,045 tasks; protocol mutation reduced the success rate by an average of 10.9 percentage points when public answers were provided, and reduced the proportion solvable by copying online answers by 9.3 percentage points.