This additional security check would require developers to verify their identity via SMS to update games on Steam.
The attackers uploaded malicious builds that infected players with malware.
The impacted users were individually notified of the potential breach via notices sent by the company.
Similarly, only admin accounts in the Steamworks partner group can invite other users.
so you can invite a new user, the new user would need to confirm their email address.
The same will be true for any Steamworks account that needs to add new users.
We also plan on adding this requirement for other Steamworks actions in the future.
However, steamcmd can continue to be used to upload builds and prepare beta test branches.
Lastly, Valve says SMS text messages will be the only way to receive the two-factor code.
source: www.techworm.net
