Researchers point out that Apple's walled garden approach on iOS makes it virtually impossible to detect the presence of malware on iPhones, which does exist (Patrick Howell O'Neill/MIT Technology …)

Patrick Howell O’Neill / MIT Technology Review:

Researchers point out that Apple’s walled garden approach on iOS makes it virtually impossible to detect the presence of malware on iPhones, which does exist  —  The iPhone’s locked-down approach to security is spreading, but advanced hackers have found that higher barriers are great for avoiding capture.