Data privacy concerns with AI in ecommerce include the collection and storage of large amounts of personal data, which can be vulnerable to breaches and misuse. AI systems may also inadvertently collect more data than necessary, raising concerns about overreach and consent. Additionally, there is the risk of bias in data handling and decision-making, which can affect customer trust and brand reputation. Ensuring compliance with data protection regulations, such as GDPR, is essential to mitigate these risks.