Apple has removed certain applications from its App Store because they can intercept Internet traffic and  compromise security of sensitive customer data, and to make Apple’s move even more controversial, the group of applications to be removed contains ad blockers which block advertisements within other applications.
The root certificates allow interception of non encrypted Internet traffic and forwarding information on user’s surfing habits and other information as well, to developers of above mentioned applications. The bank information are on the list of vulnerable data.
The company didn’t disclose the exact number of contentious applications already removed, or whether in fact there was a case of their misuse.
Also, Apple hasn’t blocked the unsafe applications permanently, and the company pointed out that they are working closely with developers to restore their applications to the App Store as soon as possible, but this time without violating privacy of iOS users.