You may have read earlier on Pocket-lint how Jailbreaking your iPhone or iPad could be the only way to keep it safe from hackers, as a result of a PDF exploit that has been uncovered.

But now Apple has responded and is vowing to fix the flaw. Bethan Lloyd, a spokeswoman for the Cupertino company said that it was "aware of this reported issue" and was "developing a fix that will be available to customers in an upcoming software update."

Lloyd didn't state when the update would arrive, however.

On Wednesday Germany's IT security agency (the Federal Office for Information Security) warned that the exploit, as used by JailbreakMe, exposed a "critical weaknesses" that could be used by cyber baddies to take a butchers at your iDevice's confidential data.

It stated that just by clicking on an infected PDF file would be "sufficient to infect the mobile device with malware without the user's knowledge".