Cross-chain yield aggregators optimize returns by deploying funds across multiple blockchain protocols, but they introduce significant security risks. Smart contract vulnerabilities can lead to exploits, as seen in the $325M Wormhole hack. Cross-chain bridges, often integral to these platforms, are prime targets for cyberattacks, with over $2.87B stolen in bridge exploits. Impermanent loss and market volatility further threaten user funds. Additionally, aggregators may rely on complex protocols, increasing the risk of design flaws or fraudulent platforms. Insufficient transparency in communicating risks to users can erode trust. To mitigate these, users should conduct thorough due diligence, prioritize platforms with audited smart contracts, and stay informed about emerging security measures like shared security designs.