Apple became the world’s most valuable company after its stocks saw a new rise Friday. However, the firm also hit the news for the vulnerable security it has for SMS services in iOS devices.

In a report sent by the Cupertino, Calif.-based company, Apple responded to the news of openness of SMS services of its iOS devices, which lets spammers, fake their identities by text and send messages to users asking them to reveal personal information.

Apple claimed that the firm takes users’ security very seriously, but also directed them to use iMessage, Apple’s own service instead of texting. The firm stated that it can verify addresses sent via iMessage easily, which protects against spoofing and scam.

However, it is also to be noted that iMessage service by Apple can be used only between users who own an iPhone, iPad, or iPod touch with iOS 5.

The company stated that there is nothing it can do to stop SMS spoofing, which can happen over any phone devices, and not just iOS. Apple, however, directed all users towards iMessage, which it says is a safer service.