The public is racing to find evidence that might lead to the gunman who killed health insurance CEO Brian Thompson. When does crowdsourcing detective work help police, and when can it cause harm?

Russia and Ukraine are fighting a war on multiple fronts, including in cyberspace. A secretive Ukrainian hacktivist group says it is carrying out cyber missions against Russia.

Estonia is host to one of the world's largest annual interactive cybersecurity drills. Russia is always considered the main threat, but this year, the war in Ukraine has only added to the stakes.