A U.S. Secret Service agent testified at Yujing Zhang 's bond hearing Monday that a fellow agent inserted a potentially " malicious " thumb drive that the accused Mar -a- Lago intruder was carrying into his government computer . Secret Service agent Samuel Ivanovich interviewed the Chinese woman after she was arrested following her illegal entry into President Donald Trump's Palm Beach, Florida, resort last month. At Zhang 's hearing Monday, he testified that another agent placed Zhang 's thumb drive into his computer , which immediately began to install a cascade of files he described as "very out of...