Quote from: sharkyshark on June 21, 2017, 08:09:56 AM

Investigating - We're investigating an issue with Ethereum sends and receives on the Coinbase platform. All Ethereum transactions will be delayed in the meantime. We appreciate your patience while we work towards a resolution.
Jun 20, 16:08 PDT

Not good, shows MAJOR OUTAGE !!!

if this is the statement Coinbase made, then I wouldn't say this is a hack or anything, it could be just a minor issue with sending and receiving and they aren't obligated to offer a %100 up-time, this topic is trying to overstate the issue IMO.
Even if there is a hack, I doubt anyone would lose money considering the large capital and cloud funding coinbase has that can probably cover their own faults.