Railgun

Railgun receives a B risk grade (27/100) from Hindenrank, where lower scores indicate lower risk. Moderate risk — novel ZK privacy technology is well-documented and endorsed by the Ethereum Foundation, with 4+ years of clean operation. Regulatory environment has improved following the US Treasury's March 2026 policy shift, though compliance gaps remain. Railgun is a privacy protocol with $93M in shielded assets across 4 chains, using zero-knowledge proofs to enable fully private DeFi transactions on Ethereum. Its B grade reflects strong documentation, 4+ years of clean operation, and growing adoption, with elevated risk from the novel ZK cryptography and residual regulatory exposure common to privacy protocols.

The key risks identified for Railgun are: (1) Railgun uses advanced zero-knowledge cryptography to provide privacy. While this technology is well-studied, the specific implementation for full DeFi privacy is complex and could contain undiscovered vulnerabilities that might allow unauthorized access to shielded funds. (2) Privacy protocols face regulatory uncertainty. Railgun has not been sanctioned and the US Treasury's March 2026 policy shift acknowledges legitimate privacy uses, but Railgun's compliance screening was bypassed by the Upbit hacker using fresh wallet addresses, which could attract enforcement scrutiny. (3) Your funds are held in a shared shielded pool. If a critical bug is found, all users would need to withdraw simultaneously, potentially creating congestion and delayed access to funds.

Railgun scores 27/100 across eight risk dimensions: Mechanism Novelty: 6/15, Interaction Severity: 3/20, Oracle Surface: 0/10, Documentation Gaps: 2/10, Track Record: 3/15, Scale Exposure: 5/10, Regulatory Risk: 5/10, Vitality Risk: 3/10. The highest risk area is Scale Exposure at 5/10.

Among 68 rated DeFi protocols on Hindenrank, Railgun ranks #9 by safety (lowest risk score = safest). Its 27/100 risk score and B grade place it among the safer DeFi protocols.

Railgun scores 3/15 on the Track Record risk dimension, indicating some history of security incidents or exploits. Higher scores reflect more severe or frequent incidents. Review the full risk report for details.