Demand for security engineers has surged as artificial intelligence generates a glut of new code and models like Anthropic’s Mythos create new concerns.

A tough re-election race grew more daunting after President Trump backed Mr. Cornyn’s opponent, Ken Paxton. The Texas senator has vowed to fight to the end.

The president’s corruption and subversion of democratic tradition risk becoming the norm.

Scientists shared transcripts with The Times in which chatbots described how to assemble deadly pathogens and unleash them in public spaces.