Sort:  

I'm using Coinbase with Two-Factor Authentication active(sms or app).
Every login from new device must be confirmed by mail.

Hi! Thanks for information. Is this considered as offline bitcoin wallet?

Coin Marketplace

STEEM 0.17
TRX 0.15
JST 0.028
BTC 56800.55
ETH 2331.69
USDT 1.00
SBD 2.34