– An international web of hackers and traders made $100 million on Wall Street by stealing a look at corporate news releases before they went out and then trading on that information ahead of the pack, federal authorities charged Tuesday.

Authorities said it was the biggest scheme of its kind ever prosecuted, and one that demonstrated another vulnerability in the financial system in this age of increasingly sophisticated cybercrime.

In a 21st-century twist on insider trading, the hackers broke into the computers of some of the biggest business newswire services, which put out earnings announcements and other news releases for a multitude of corporations.

Nine people in the U.S. and Ukraine were indicted on federal criminal charges, including securities fraud, computer fraud and conspiracy. And the Securities and Exchange Commission brought civil charges against the nine plus 23 other people and companies in the U.S. and Europe.

The case “illustrates the risks posed for our global markets by today’s sophisticated hackers,” SEC chief Mary Jo White said. “Today’s international case is unprecedented in terms of the scope of the hacking at issue, the number of traders involved, the number of securities unlawfully traded and the amount of profits generated.”

The nine indicted include two people described as Ukrainian computer hackers and six stock traders. Prosecutors said the defendants made $30 million from their part of the scheme.

ASSOCIATED PRESS