Which issue was identified on Windows systems that could compromise user security in Zoom?

The identified issue on Windows systems that could compromise user security in Zoom pertains to the potential for a malicious party to leak a user's hashed password. This is significant because a hashed password, while not the plain text password, can still be vulnerable to attacks such as brute force, especially if the hashing algorithm is weak or if additional security measures, such as salting, are not implemented.

When a hashed password is exposed, it poses a risk because savvy attackers can attempt to reverse-engineer the original password through various methods, ultimately leading to unauthorized access to user accounts. This concern emphasizes the importance of strong password management and secure coding practices in application development to protect sensitive user information.

The correct answer underscores a critical vulnerability that directly impacts user security, particularly in applications that handle sensitive communication such as Zoom. The other options, while related to security concerns, do not focus directly on the compromise of user credentials in the same direct manner.