iPhone users, Apple is warning customers to be leery of text message sent via SMS. According to Mashable.cm, Apple issued the alert after pod2g, a well-known hacker, allegedly discovered a flaw in Apple’s iOS system that can let hackers change the cell phone number as it appears in a text message.

By changing the number, the text looks like it is coming from a trusted contacted and it isn’t.

Pod2g posted the find on his blog and stated, “The flaw has existed since the beginning of SMS implementation on the iPhone, and is still found in iOS 6, the next generation of Apple’s iPhone software.”

He went on to warn users to “never trust any SMS you received on your iPhone at first sight.” He also added that the flaw could pose several issues for iPhone customers. Some of the SMS messages could appear to be coming from your financial institution asking for private information and “sending fake messages to a phone to be used as false evidence in a court case.”

“Anything you can imagine that can be utilized to manipulate people,” continued Pod2g’s post. “Letting them trust somebody or some organization texted them.”

Apple is not taking pod2g’s claims lightly. The company has suggested iPhone users use iMessage instead of the regular text messaging system whenever possible.

In a statement from the company, “Apple takes security very seriously. When using iMessage instead of SMS, addresses are verified, which protects against these kinds of spoofing attacks.”

“One of the limitations of SMS is that it allows messages to be sent with spoofed addresses to any phone, so we urge customers to be extremely careful if they’re directed to an unknown website or address over SMS.”