NZX was hit with a series of volumetric distributed denial-of-service attacks in August 2020 as part of an extortion attempt. The Financial Markets Authority says NZX lacked sufficient technology resources and had inadequate IT security, including poor network design and unprotected infrastructure. The stock market also suffered from cultural problems, including a lack of willingness to accept fault, the authority says. NZX officials couldnt immediately be reached for comment on the regulator’s findings. The regulator’s report says NZx was unable to deflect even the initial DDoS strikes, which were at lower levels.”]
Source: https://www.cuinfosecurity.com/regulator-blasts-nzs-stock-exchange-over-ddos-meltdown-a-15881

