Cash App is generally considered secure due to its use of industry-standard encryption and security protocols like PCI DSS compliance, two-factor authentication, and biometric options (Face ID, Touch ID). It encrypts user data both in transit and at rest, employs fraud detection algorithms to spot suspicious activity, and notifies users of security changes. Additionally, Cash App funds linked to a Cash App Card are federally insured up to $250,000, and investments via Cash App are protected by SIPC insurance up to $500,000. However, Cash App transactions are typically final and irreversible, and there is no buyer protection like in traditional banking. The app has been targeted by scammers, so users must be cautious, especially when sending money to unknown parties. Cash App's customer support is limited, which may affect recovery options in the event of fraud or scams. Users are encouraged to use security features and only send money to trusted contacts for optimal safety. Past data breaches have occurred, leading to increased security measures by Cash App.