The cryptocurrency community is buzzing with controversy as zkSync, an Ethereum zero-knowledge Layer-2 scaling solution, faces backlash for its recent token airdrop. Critics are slamming zkSync for allegedly inadequate measures against Sybil attacks, allowing multiple wallets to unfairly claim tokens.
Mudit Gupta, Chief Information Security Officer at Polygon, criticized the zkSync airdrop as “the most farmable and farmed airdrop ever.” Despite zkSync outlining seven criteria to prevent Sybil attacks, critics like Adam Cochran from Cinneamhain Ventures argue that the criteria were easy for attackers to meet and legitimate users to miss.
Crypto analytics firm Nansen clarified its role in providing data on wallet segments but not conducting anti-Sybil checks. DeFi researcher Ignas noted zkSync’s deliberate avoidance of strict measures to prevent excluding genuine users through arbitrary filters.
Sybil Horror 6 estimated that 135 million ZK tokens could end up in Sybil wallets, potentially worth up to $50 million. The controversy underscores the challenges of balancing fair distribution and effective Sybil attack prevention.
Matter Labs, the developer of zkSync, also faced criticism for attempting to trademark the term “zero-knowledge” in multiple countries, a move later abandoned. The ongoing debate highlights the complexities of navigating the cryptocurrency landscape and ensuring fair and secure token distribution.
