To identify airdrop scam techniques:  Check Authenticity: Verify the project’s official website, social media, and whitepaper. Legitimate projects have transparent teams and active communities.  
Avoid Sensitive Info Requests: Never share private keys or seed phrases; legit airdrops don’t ask for these.  
Watch for Red Flags: Be cautious of unsolicited offers, unrealistic rewards, or urgent demands.  
Inspect URLs and Profiles: Fake websites or social media accounts often mimic real ones with slight differences.  
Research Tokens: Check if tokens are flagged on block explorers like Etherscan. Avoid interacting with suspicious tokens.  
Use Burner Wallets: For airdrops, use a separate wallet with minimal funds to limit risks.

Stay vigilant and trust your instincts.  Sources:

To identify airdrop scam techniques:  Check Authenticity: Verify the project’s official website, social media, and whitepaper. Legitimate projects have transparent teams and active communities.  
Avoid Sensitive Info Requests: Never share private keys or seed phrases; legit airdrops don’t ask for these.  
Watch for Red Flags: Be cautious of unsolicited offers, unrealistic rewards, or urgent demands.  
Inspect URLs and Profiles: Fake websites or social media accounts often mimic real ones with slight differences.  
Research Tokens: Check if tokens are flagged on block explorers like Etherscan. Avoid interacting with suspicious tokens.  
Use Burner Wallets: For airdrops, use a separate wallet with minimal funds to limit risks.

Stay vigilant and trust your instincts.  Sources:
https://tangem.com/en/blog/post/airdrop-scams-in-crypto-and-how-to-avoid-them/
https://support.metamask.io/en/articles/9727900-how-to-tell-the-difference-between-a-regular-airdrop-and-airdrop-phishing-scams