Käyttäjätunnussalasana

Käyttäjätunnussalasana, often shortened to tunnus ja salasana or simply tunnus-salasana, refers to a username and password combination used for authentication. This pairing is a fundamental security mechanism employed across numerous digital systems, from websites and online services to computer operating systems and private networks. The username, also known as a login ID or account name, uniquely identifies a specific user within a system. The password, a secret string of characters, serves to verify the identity of the user claiming the username. When a user attempts to access a protected resource, they are prompted to provide both their username and password. The system then compares the provided credentials against its stored records. A successful match grants the user access, while an incorrect entry typically results in an access denial. The strength of akäyttäjätunnussalasana lies in the secrecy and complexity of the password, as a compromised password can lead to unauthorized access to the user's account and the information it contains. Regularly changing passwords and using unique, strong passwords for different services are recommended security practices to mitigate risks associated with käyttäjätunnussalasana.