PARIS (AP) — Researchers have found a troubling new form of power grid-wrecking software, tying the discovery to a recent Ukrainian blackout in tworeports published Monday.

The malicious software has the ability to remotely sabotage circuit breakers, switches and protection relays, the reports say, a nightmare scenario for those charged with keeping the lights on.

"The potential impact of malware like this is huge," said Robert Lipovsky, a researcher with Slovakian anti-virus firm ESET, which first obtained the rogue program. "It's not restricted to Ukraine. The industrial hardware that the ma...