iOS is not immune - it just has a far less surface area to attack when unmodified. One can still do a driveby attack where a malicious webpage kicks Safari's t

iOS is not immune - it just has a far less surface area to attack when unmodified. One can still do a driveby attack where a malicious webpage kicks Safari's teeth in and finds a way through the sandbox. (Or replace Safari with 'any app that consumes network content')