S SecurePass Studio

Glossary

Password Security Glossary

Password security has many terms that sound technical. This glossary explains the important ones in plain English so users can make better decisions.

Password security glossary with lock and shield illustration
Privacy note: Do not enter real passwords into websites you do not trust. On this static site, password generation and strength estimation are designed to run in your browser, but you should still use good judgment with sensitive credentials.

Entropy

Entropy describes how hard a password is to guess based on randomness and possible combinations. Longer random passwords usually have higher entropy than short predictable ones.

Credential stuffing

Credential stuffing is the automated testing of leaked email and password combinations on other websites. Unique passwords reduce this risk.

Phishing

Phishing is a trick that leads users to reveal passwords or codes on fake pages, emails, or messages. Strong passwords do not fully protect against phishing.

Hashing

Hashing transforms data into a fixed output. Websites should store password hashes, not plain text passwords. Users still need unique passwords because weak hashes or breaches can expose credentials.

Two-factor authentication

Two-factor authentication requires a second proof besides the password, such as an authenticator app, security key, or SMS code.

FAQ

Frequently asked questions

Should I reuse one strong password?

No. A single reused password can become a master key for attackers if one service is breached.

Is length more important than symbols?

Length is usually the strongest single factor, but symbols and mixed character types can add useful entropy when the password remains random.