Crypto derivatives platform BitMEX has compromised users’ privacy and security by forgetting to use blind copy (b/cc) on a mass email
Source: https://cointelegraph.com/news/breaking-bitmex-may-have-just-leaked-all-of-their-users-emails
BREAKING: BitMEX May Have Just Leaked All of Their Users’ Emails
November 1, 2019
CoinTelegraph