The hacking tool was used on close to seven million devices in just its first four days online.

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Like most security researchers, Flick defends his release of a new hacking tool by arguing that it creates awareness of already-existing vulnerabilities.

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One managed to fit the lock-hacking tool into an iPhone case.

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Those numbers vastly exceed previous jailbreaks such as Jailbreakme 3, a popular hacking tool for iOS released in the summer of 2011 that was used on around 2 million devices, according to a count at the time by creator Nicholas Allegra.

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Both exploits take advantage of the Blackhole exploit kit, an off-the-shelf hacking tool that was updated last month to prey on the Java vulnerability, such that users who run the Java plug-in can have their PC entirely compromised via their browser when they visit an infected site.

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Firesheep, the tool that makes hacking non-encrypted Web browsing sessions easy, has now been out for over a week.

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