“Hackers targeted SendGrid, a mass email service used by 180,000 companies including Uber, Pinterest, Spotify and Foursquare, to infiltrate Coinbase, one of the most popular Bitcoin exchanges.
SendGrid confirmed that one of its Bitcoin-related clients was compromised on Wednesday. It would not name the customer, but Coinbase confirmed in an email on Thursday that hackers had compromised its SendGrid account, though it said no Bitcoin were stolen.”
Source: SendGrid Account Breach Was Used to Attack Coinbase, a Bitcoin Exchange – NYTimes.com