Define your security model. If you are talking about advertisers, then both can achieve about the same "security" level. But there's no point talking about secu

Define your security model. If you are talking about advertisers, then both can achieve about the same "security" level. But there's no point talking about security (as remotely inaccessible) while we don't have an open hardware + firmware. Baseband is a "micro PC", some even run modified Linux kernel under the hood, WiFi chip, battery controller etc. -- all are capable of running spyware/malware too.