Async dynamic NFTs revolutionize digital art by allowing attributes to evolve via off-chain data, enhancing creativity and interactivity. Yet, this reliance on external data sources poses serious risks. Malicious actors can tamper with off-chain data, causing unauthorized mutations in artwork attributes like rarity, visuals, or value. Such vulnerabilities, often stemming from weak validation or insecure APIs, erode trust in NFT ecosystems. To counter this, developers should adopt decentralized oracles, robust encryption, and tamper-resistant data feeds. As dynamic NFTs gain traction in the digital art market, ensuring data integrity is vital to protect artists and collectors. Safeguarding these assets from off-chain manipulation is essential to maintain their authenticity and value in the evolving Web3 landscape.