OMG! That's enormous!, sorry for your loss, it would be of great help if you could elaborate where coins where held, is it a multi wallet(If Yes, which wallet ?) how it happen or what you could think have happened ? A malware installation, phishing site and or anything that is more specific.
The coins were held in these locations (order corresponding to the list in my first posting):
Currency Place
DASH Qt-Wallet on Laptop
BCH ElectronCash on Laptop
BTC Binance.com
BTC Kraken.com
NEM Simplewallet on Laptop
BURST Desktop wallet on Laptop
BTC Exodus wallet on Laptop
OmiseGo Exodus wallet on Laptop
LTC Exodus wallet on Laptop
BCH Exodus wallet on Laptop
DASH Exodus wallet on Laptop
Basically it was a stupid combination of failures. I use Windows 10 and tried to claim BTCP and BCD. Both with the Electrum version for their blockchains.
I used the same long password for different things - especially my password safe had the same pw as the DASH QT wallet. So after I started the Electrum clients (which I tested before with Defender, SuperAntiSpyware and
www.virustotal.com) I had to do a little thing in DASHQT - that was it - the one of the wallets, most likely BCD, spied my password through a keylogger and the hacker had access to everything.
(there is no need to discuss the stupidity of using Win10, same passwords many times, storing 2FA codes in password safes or testing new software on a vulnerable system)
this is so bad news, but where you had this altcoins? on exchange? or which wallet?