The primary risk associated with single sign-on is the single authentication point. If a password is compromised, access to many applications can be obtained without further verification. A single point of failure provides a similar redundancy to the single authentication point. However, failure can occur at multiple points in resources, such as data, process or network. An administrative bottleneck may result when the administration is centralized in a single-step entry system. This is, therefore, an advantage. User lockout can occur with any password authentication system and is normally remedied swiftly by the security administrator resetting the account.
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