The Dutch Government’s Ministry of Security & Justice’s website Waarschuwingsdienst.nl has published a problem with iOS that is not a big threat to the prudent iOS user, but still is a ‘good to know’.
Simply put :
The URL that you are seeing in your iOS web browser may not actually be the URL you’re visiting, enabling a phishing threat (this problem was found in iOS 5.1, but will most certainly exist in all previous versions of iOS also)
Suggested remedy :
To minimize the potential of this hazard, make sure you are not clicking on any weblinks when reading websites or eMails from sources you do not fully trust.
Especially when asked for personal data and/or payment, make sure you retype the complete URL manually, and check if the URL doesn’t get redirected, when using your iPad, iPhone or iPod Touch.
More info on this and other viruses, malware, hoaxes, vulnerabilities, software-leaks, privacy breaches, phishing and alike, including updates on official patches, can be found here [in dutch] :