One a few reasons they can ask you for security reason
- The email change
- Password change
- Login with different IP Country, Let's say the original owner form Asia and suddenly there has some change login and playing with Europe IP.
I do not think Stake will ask you for security reason because above mentioned reasons.
Email change? Frankly speaking, I cant find any feature to do this, so I guess players are unable to change their email address themselves but perhaps it is possible to ask it through support.
Password change? I have changed my password many times but they never asked me something.
IP changes? I used to use my original IP in the past but lately I use VPN with various IP address and they have not asked me as well.