PayPal can make material changes to how your data is used with limited or no advance notice in many cases, meaning your continued use of the service may constitute acceptance of new terms you haven't explicitly reviewed.
PayPal collects an unusually broad range of personal data including biometric identifiers, precise geolocation, inferred income and behavioral profiles, and sensitive financial information, and shares this data with a wide ecosystem of third parties including merchants, credit reporting agencies, debt collectors, and advertisers. Non-account holders who simply transact through PayPal-powered checkouts are also subject to data collection, and their data may later be linked to a PayPal account if one is created. You can opt out of targeted advertising, limit data sharing, and manage your privacy preferences by visiting your PayPal account privacy settings at https://www.paypal.com/us/myaccount/privacy/profiles/search.