Canada’s electronic spy agency says it warned system operators “in a timely-as-possible way” about a Russian-backed hacker who lurked in their computer networks three months ago with the capacity to do physical damage. Sami Khoury, the head of the Communications Security Establishment’s Canadian Centre for Cyber Security, refused to provide details about the timing or…

OTTAWA—For the first time, a federal judge has expressly granted Canada’s spy agency warrants to operate abroad even if it means breaking another country’s laws. Federal Court Justice Simon Noel authorized warrants for the Canadian Security Intelligence Service five months ago, but public reasons for the top secret decision were issued only this week. The…