How are passwords stored safely?

Websites do not store passwords in plain text. Instead, they use a process called hashing to protect them.

Hashing converts a password into a fixed-length string of characters using a mathematical function. This output, called a hash, cannot easily be reversed back into the original password.

For example, if two users have the same password, secure systems often add a random value called a salt before hashing it. This ensures that even identical passwords produce different hashes.

When you log in, the system hashes the password you enter and compares it to the stored hash. If they match, access is granted.

Secure systems also use strong hashing algorithms such as bcrypt, Argon2, or PBKDF2. These algorithms are designed to be slow and difficult to crack, making brute-force attacks harder.

If a database is breached, attackers would see only hashed passwords, not the actual ones. However, weak passwords can still be guessed, which is why strong and unique passwords are important.

In summary, passwords are stored safely by converting them into secure hashes, preventing direct access to the original password.