Coincheck was hacked and only the NEM wallet was affected.
Sadly, coincheck kept too much NEM (XEM) on HOT wallet 
Security is so critical, this stuff should not be happening. This is NOT FDIC backed or or world banking equivalent.
Coincheck, however, said that “It was hard for us to manage cold wallet,” - Need more IT blockchain experts.
Regulators are going to hit now and hit hard. - which is expected.
NEM Doesn’t Plan to Fork to Recover the Stolen Funds.