The security expert Ariel Sanchez presented the results of the test conducted on 40 iOS banking apps, comparing them to the ones obtained 2 years ago. Sanchez evaluated the security level for 40 banking apps and discovered a number of security weaknesses or vulnerabilities. The expert limited his analysis on client-side, avoiding to investigate the security offered on server-side. Sanchez concluded that despite the security implemented by the banking apps is increased it is still not enough because many apps remain vulnerable. 15 per cent of the iOS apps store unencrypted data and sensitive information.”]
Source: http://securityaffairs.co/wordpress/42942/hacking/mobile-banking-apps-tests.html