WELLINGTON, New Zealand—New Zealand activated its National Security System in response to a prolonged cyberattack that disrupted trading on the country’s stock exchange this week. Trading on New Zealand’s securities market was halted for a fourth day on Friday by a denial of service attack that NZX Ltd., the exchange’s operator, said came from overseas. Finance Minister Grant Robertson said the Government Communications Security Bureau spy agency had been directed to help the exchange’s operator. He said the National Security System was activated, requiring government agencies to coordinate in response. “We’ve got the highest levels of government involved and our security agencies involved as well,” he said.

Source: Wall Street Journal August 28, 2020 07:07 UTC