Multiple agencies, including Meta and Microsoft's threat intelligence division, have sounded the alarm over the increasing interference as election day approaches.
Ever since his disastrous debate performance against Trump on June 27, the 81-year-old incumbent has been dogged by relentless questions about whether he should be running for a second term as the Democratic nominee.
Police have released a computer-generated image of the suspect, who is described as being in his late 20s, with a stocky build, thick dark beard and moustache, and tanned skin.
Ten people, including a suspected shooter, have died following a shooting in Tumbler Ridge, a small town in British Columbia, Canadian authorities say.