Countries build defences against tech warfare

U.S. Director of National Intelligence Tulsi Gabbard, left, joined by CIA Director John Ratcliffe, testifies as the House Intelligence Committee holds a hearing on worldwide threats, at the Capitol, in Washington, March 26, 2025. (AP Photo/J. Scott Applewhite, File) WASHINGTON — Hackers linked to Russia's government launched a cyberattack last spring against municipal water plants in rural Texas. At one plant in Muleshoe, population 5,000, water began to overflow. Officials had to unplug the system and run the plant manually. The hackers weren't trying to taint the water supply. They didn't ask for a ransom. Authorities determined the intrusion was…