March 22 news, according to data analysis platform X-explore research, Arbitrum’s anti-sybil rules in this airdrop caused a “major loophole”, resulting in approximately 150,000 Sybil (sybil) addresses and at least 4,000 Sybil communities profiting More than 253 million tokens, accounting for 21.8% of the total airdrop volume.
According to X-explore speculation, Arbitrum’s rules are: exclude cross-chain bridges, centralized exchanges, and smart contracts when detecting Sybil; use relatively tolerant detection for small-scale, same-person addresses; only snapshots (February 6, 2023 ) before for Sybil detection.
Only data from Arbitrum and Ethereum were used for Sybil detection, while data from other Ethereum 2 layers such as Optimism and Polygon were ignored.
These Sybil detection rules will cause major loopholes. According to the above rules, X-explore detects witch address data through the internal same-person address/Sybil address recognition model.