What are witch attacks and airdrop hunters

In the field of airdrops, the so-called witch attack refers to the behavior of a "physical body" controlling multiple addresses on the chain and pretending to be different users to interact.

At this stage, airdrop hunters have become a new form of Sybil attack. These accounts interact with smart contracts and protocols in a purposeful manner to hunt for a large number of airdrop token shares.

The existence of a large number of airdrop hunters has forced many decentralized applications to face the problem that the simple design of the airdrop mechanism may not work. If a large number of Tokens are allocated to airdrop hunting robots without screening, many users will not receive rewards after receiving the rewards. Cash out immediately and let the token price plummet in the short term.