According to an earlier report, A vulnerability named Wirelurker was found in the iOS system , which may have affected hundreds of thousands of users. The vulnerability is mainly spread through the Maiyadi app store, which is a third-party source of OS X software from China.

It was reported in the early morning of November 7 that Apple announced on Thursday that it had discovered and blocked malicious software targeted at Chinese users.

The company said in a statement: "We have found that a download site contains malicious software targeted at Chinese users, and has blocked problematic applications to prevent them from being opened. We continue to recommend users to download and install software from trusted channels."

This is the first time that such vulnerabilities affect iPhone without jailbreak. This is also the first vulnerability that can turn legitimate iOS applications into malware without downloading additional software. So there is no absolutely safe system, even iOS, and good usage habits are still indispensable.