A strong password is not about making one clever word difficult to guess. The safer goal is to make every important account use a different secret with enough randomness that guessing one account does not help an attacker with another.
Use a unique password for every important account
Password reuse creates a chain reaction: if one service is breached and the same password was used elsewhere, attackers can try that known combination on other services. Unique passwords limit the damage to a single account.
Prefer length and randomness over tricks
Predictable substitutions such as replacing an “a” with “@” may look complex to a person but still follow recognizable patterns. Randomly generated passwords are useful because they do not depend on memorable personal details or common phrases.
The NexusNova Password Generator generates output locally using the browser's cryptographic random-number source and lets you choose length and character types.
Store passwords safely
For many accounts, remembering every unique random password is unrealistic. A reputable password manager can generate and store credentials so you only need to protect the manager itself carefully. Where available, passkeys can also reduce reliance on reusable passwords.
Turn on multi-factor protection
Multi-factor authentication adds another barrier when a password is exposed. An authenticator app, hardware security key or passkey-based sign-in is generally more resistant to account takeover than relying on a password alone. The exact options depend on the service you use.
Protect recovery channels too
Your email account and recovery methods can reset access to many other services, so they deserve especially strong protection. Review recovery email addresses, phone numbers and trusted devices periodically, and remove access you no longer recognize or use.
Never share sensitive secrets in public tools
Do not paste real passwords, recovery phrases, private keys, banking PINs or one-time security codes into random websites or messages. A password generator should create a new value; it does not need your existing password to work.
Official guidance and further reading
Password advice changes as authentication standards evolve. For account-critical decisions, compare a quick checklist like this with current standards and the security guidance of the service you use.
- NIST SP 800-63B: Authentication and authenticator management — current digital-identity guidance for passwords and authentication.
- CISA: Use strong passwords — practical guidance on unique passwords and password managers.
- CISA: Turn on multifactor authentication — why an additional factor helps protect accounts.
Exact options depend on the account provider. Prefer the provider’s current recovery and sign-in settings, and never send your actual password or recovery codes to a third-party tool.