Business Insider: They threaten to 'dismantle his campaign' by taking his election websites offline in a large-scale and orchestrated distributed denial-of-service (DDoS) attack. by Jason Murdock
'In December 2015, Anonymous officially 'declared war' on Trump after a radical speech in which he said Muslims should be banned from entering the United States. The operation at the time resulted in a number of websites being targeted by hackers, but failed to have lasting impact.
'A new video statement has been posted to YouTube which claims the 'loyalists and veterans' of Anonymous have decided to ramp up cyber-operations against Trump – dubbed #OpTrump – on a far larger scale than ever before.
'"Dear Donald Trump, we have been watching you for a long time and what we see is deeply disturbing. Your inconsistent and hateful campaign has not only shocked the United States of America [but] you have shocked the entire planet with your appalling actions and ideas. You say what your audience wants to hear but in reality you don't stand for anything except for your personal greed and power."
'The video, which features the traditional Guy Fawkes mask-wearing spokesperson speaking directly to camera, called the operation a "call to arms" for hacktivists across the globe.'