lisätunnistusta

Lisätunnistus, often translated as "additional identification" or "secondary authentication," refers to a security process that requires users to provide more than one piece of evidence to verify their identity. This is a crucial component of modern cybersecurity, designed to prevent unauthorized access even if a primary credential, such as a password, is compromised.

The concept of lisätunnistus is based on multifactor authentication (MFA). MFA systems typically rely on a combination of three categories of authentication factors: something the user knows (e.g., password, PIN), something the user has (e.g., smartphone, security token), and something the user is (e.g., fingerprint, facial scan). A lisätunnistus process usually involves at least two of these distinct categories.

Common examples of lisätunnistus include receiving a one-time passcode (OTP) via SMS or an authenticator app after entering a password, or using a fingerprint scan to log into an application after entering a username and password. Biometric verification is increasingly integrated into lisätunnistus, offering a convenient and secure method.

The implementation of lisätunnistus significantly enhances security by creating multiple layers of defense. Even if an attacker obtains a user's password, they would still need to bypass the additional authentication factor to gain access. This makes it much more difficult for malicious actors to compromise accounts, protecting sensitive personal and financial information. Many online services, especially those dealing with financial transactions or personal data, now mandate or strongly encourage the use of lisätunnistus.