By Fang Wei-li / Staff reporter Taiwan and the US should form an anti-infiltration task force as China shifts influence operations into “legal gray zones,” Hsu Kai-hsieh (許凱傑), a judge in the Taipei District Court’s National Security Division, said on Friday during a discussion hosted by the Hudson Institute’s China Center in Washington.Chinese espionage has undergone three major changes over the past decade, Hsu said at the event, which was to share Taiwan’s experience in handling national security cases and countering infiltration efforts.The focus has shifted from high-value classified information — such as military officers, weapons systems and radar data — to lower-level intelligence, including military meal arrangements and routine training schedules, he said. Hsu Kai-hsieh, a judge