I am not sur if my nem have been stolen or what happen but i checked my balance today and i saw some nem going out that was not operated by me.
my adress: NBYU73GUBCV6ICQNVNOA6KVDJXASB54JIYMYTIZD and there more than 2000 nem out and i didint.
What can i do about it is it a hack ?
Not sure which transaction you think you didn’t do. It would be highly unlikely that someone stole just some of your XEM, and not all of it.
Are you using the mobile wallets? If so, make sure you are using the latest version, and that you have a strong pasword.
If you are using Nanowallet, transfer the XEM to a new address.