A Daily Telegraph report finds that the iPhone 4 logs far more information than its users may realize.

"In an interesting report, the London paper quotes Jonathan Zdziarski, an ex-hacker -- who now teaches US law enforcement officers on how to retrieve information from mobiles -- as saying 'there are a lot of security issues in the design of the iPhone that lend themselves to retaining more personal information than any other device,'" according to Infosecurity.

"Examples cited by the former hacker include the iPhone's keyboard logging cache, which was 'designed to correct spelling but meant that an expert could retrieve anything typed on the keyboard over the past three to 12 months,'" the article states.

Click here to read the Infosecurity article.