United Kingdom, March 24 -- A new iPhone hacking tool can be used by attackers with "no iOS expertise required".

Someone online has leaked a new version of advanced hacking tool DarkSword, and researcher have insisted any hacker can easily use the tools to target people using older versions of Apple's operating system, which could include hundreds of millions of devices.

Speaking to TechCrunch, Matthias Frielingsdorf, co-founder of security startup iVerify, said: "This is bad. They are way too easy to repurpose.

"I don't think that can be contained anymore. So we need to expect criminals and others to start deploying this."

He added: "The exploits will work out of the box. There is no iOS expertise required."

He said that the leaked ...