Short answer: a banking app security checklist should follow the OWASP MASVS v2 control groups: STORAGE, CRYPTO, AUTH, NETWORK, PLATFORM, CODE, RESILIENCE and PRIVACY. Keep secrets in the Keychain or Android Keystore, let the server make every authorization decision, enforce TLS, treat jailbreak and root detection as defense in depth, and verify it all with the OWASP MASTG.

In a banking app a leak is both a regulatory event and a direct financial loss. This checklist covers the client-side controls I check when building or auditing fintech and banking apps, from authentication to incident response, and maps each one to the OWASP Mobile Application Security Verification Standard (MASVS) so it lines up with the standard security reviewers already use.

The server half (token lifecycle, policy enforcement, rate limiting and abuse control) is in the Laravel API security checklist . The two are meant to be read together: a hardened app in front of an API that trusts the client is still an open attack path.…