A letter from Earth: I'm giving you record temperatures and wild floods. TAKE A HINT!!

The hacking of screens and public-address systems at three airports in British Columbia and Ontario should spur governments to ensure public readiness for disinformation campaigns and cyberattacks, a top federal official told a security conference in Vancouver Thursday. Members of the opening panel at the second annual Vancouver International Security Summit agreed that Canadians are woefully unaware of wide-ranging efforts to disrupt public institutions, interfere and stoke division online among different groups, and to steal money or information from private companies.