I really don’t know why you’d store your data in a cloud operated by Western Digital. But if you did, you’re in trouble. https://www.bleepingcomputer.com/news/security/western-digital-discloses-network-breach-my-cloud-service-down/
May be redundant to say, but in a world with proper encryption and good key management: you could store your data anywhere you want and this never happens to you.