Both cryptocurrency exchanges have reported distributed denial-of-service (DDoS) attacks on their systems in the last 24 hours.
Source: https://www.coindesk.com/major-crypto-exchanges-bitfinex-and-okex-hit-by-traffic-denial-attacks
Major Crypto Exchanges Bitfinex and OKEx Hit by Service Denial Attacks
February 28, 2020
CoinDesk
