WASHINGTON-Top artificial-intelligence executives are joining security experts in calling for Congress to protect against biological threats posed by AI, adding to growing pressure on lawmakers to address the technology's risks.

Three major chief executive officers-OpenAI's Sam Altman, Anthropic's Dario Amodei and Demis Hassabis of Google's DeepMind AI lab-are among the signatories of a letter urging Congress to require safeguards when companies order synthetic DNA and RNA, a key step in developing certain vaccines and biotech breakthroughs.

China Uses LinkedIn to Lure Spy Recruits in West, U.S. and Allies Warn

BEIJING-Chinese spies are increasingly posing as job recruiters on LinkedIn and other professional networking sites to recruit Western military and government personnel, the U.S. and its intelligence allies warned this week, reinforcing calls for vigilance.

The Five Eyes intelligence-sharing network, which also includes Canada, the U.K., Australia and New Zealand, alleged that Chinese military intelligence operatives were posing as employees of private consultancies, think tanks and human-resources firms looking to hire foreign-policy or defense analysts.