(Telecompaper) A group of Google researchers has discovered that thousands of iOS users every week have been subject to an unprecedented hacking operation. In a blog posted by security researcher Ian Beer, part of Google's Project Zero, the company revealed a wide-ranging campaign of iPhone hacking via a small collection of websites. The hacked sites were being used in indiscriminate "watering hole" attacks against their visitors, said Beer, adding that the sites were programmed to assess devices that loaded them, and to compromise them with powerful monitoring malware if possible.