Re: Does malware only come from Apps?
Yes, that's correct — any images loaded in web pages were susceptible, though it's important to note that these specific problems have long since been addressed. I don't know of any current major security vulnerabilities in mobile browsers, and the fact that these problems existed at some point isn't cause for concern, only awareness. And, for comparison, these "vulnerabilities" aren't always used with malicious intent. JailbreakMe, an early jailbreak solution for iOS devices, used a vulnerability in Safari's PDF file parser.
Originally Posted by BlueEyesNotADragon
Android effectively limits how much information is available to applications, and the primary user-facing mechanism behind this is the permissions system. Pay attention while browsing and downloading, pay attention when installing apps, and keep an eye out for security news, and you should be good.