The following will sound a little weird, but I just throw mn backup keys directly into the trash if possible
.
I do not recommend people to do this, if you do not know what you are doing.
Here is why,
I have 2 smartphones that not have been used. Always in airplane mode.
I use not the same account identification keys on that phones.
Im using 2 to 3 different 2fa keys for the same account, for example a exchange to login.
The advantage of this is that if one of the phones fails, I can simply log in with the other smartphone with other 2fa keys on my accounts.
My crypto accounts are hackers trying to hack every day. I think for almost a year now.
They log in with the right password and email, only they do not get any further with the 2fa identification.
These are just the hitbtc login attempts on my HitBTC account.
2018-11-15 14:26 Failed login attempt Desktop Chrome 58.0 WinNT 42.144.190.111 Yokohama, Japan
2018-11-12 11:59 Failed login attempt Desktop Chrome 58.0 WinNT 187.178.93.56 Mexico City, Mexico
2018-11-10 08:08 Failed login attempt Desktop Chrome 58.0 WinNT 175.206.17.170 Seoul, Republic of Korea
2018-11-09 03:41 Failed login attempt Desktop Chrome 58.0 WinNT 1.0.220.203 Nakhon Si Thammarat, Thailand
2018-11-04 01:11 Failed login attempt Desktop Chrome 58.0 WinNT 2602:ff62:121:814e:8000::4 Chicago, United States
2018-10-31 07:53 Failed login attempt Desktop Chrome 58.0 WinNT 1.20.96.234 San Sai, Thailand
2018-10-17 12:07 Failed login attempt Desktop Chrome 58.0 WinNT 210.195.171.89 Klang, Malaysia
2018-10-08 22:29 Failed login attempt Desktop Chrome 58.0 WinNT 165.16.250.26 South Africa
What I also forgot to report is about whitelisting your external wallet addreses for withdrawal monney form accounts.
The whitelist is an additional security measure aimed to protect your trading and your funds by creating a secure list of withdrawal addresses. By setting and confirming the whitelist of addresses for cryptocurrency withdrawals you agree that the withdrawal of the funds will be limited to these addresses only.
I also use it on hitbtc, and can only withdrawal to one of whitelisted wallets.
https://support.hitbtc.com/hc/en-us/articles/360000800605-Whitelist-of-withdrawal-addresses