To assess an airdrop project's legitimacy, research its team: verify their credentials and past projects. Analyze the whitepaper for clear goals, technology, and use cases. Check if the project has a working product or prototype. Review partnerships and backers for credibility. Monitor community engagement on platforms like Telegram or Discord—active, genuine discussions are positive signs. Scrutinize tokenomics: avoid projects with excessive token supply or unclear distribution plans. Use tools like Etherscan to audit smart contracts. Avoid projects promising unrealistic returns. Cross-check reviews on trusted crypto forums and news sites to ensure transparency and legitimacy.