The S&P 500 is set for a small loss in October, despite a deeper slide in some of the A.I. stocks that exert a heavy influence on the index.

The largest cyber heist in history came as attackers increasingly use artificial intelligence and other advanced techniques to steal crypto and quickly launder the funds.

Journalists at the fiercely independent Novaya Gazeta, whose co-founder received the Nobel Peace Prize, said the government had orchestrated its demise.