What Is a Password Manager?
A password manager is an application that stores your passwords and other sensitive information in an encrypted vault. Instead of having to remember dozens of different passwords, you typically only need to remember one main password used to unlock the vault.
Password managers can store information such as usernames, passwords, website addresses, secure notes, and other credentials. Depending on the password manager, they may also provide tools for generating strong passwords and quickly copying stored information when you need it.
The basic idea is simple: let the password manager remember your passwords so you don't have to.
Why Use a Password Manager?
Many people reuse passwords or use variations of the same password across multiple accounts because remembering a large number of unique passwords can be difficult.
The problem with password reuse is that if one account's password is exposed, attackers may try the same password on other services. Using a different password for every account limits the damage when one credential is compromised.
A password manager makes this approach much more practical by securely storing unique passwords for each account.
How Does a Password Manager Work?
While password managers differ in their implementation, the basic process is generally similar.
1. Your Passwords Are Stored in a Vault
Your saved credentials are kept inside a password vault. The vault is protected using encryption so that the stored information cannot simply be read as ordinary text.
2. You Unlock the Vault
A master password or another authentication method is used to unlock the vault. The exact security design varies between password managers.
A strong master password is particularly important because it can be the primary protection for the information stored in the vault.
3. You Retrieve the Password You Need
Once the vault is unlocked, you can search for the account or credential you need. Many password managers provide features that make copying or entering usernames and passwords faster.
4. The Password Manager Can Generate New Passwords
Many password managers include password generators that can create long, random passwords. This makes it easier to use a different password for every account without having to invent and remember each one yourself.
What Does a Password Manager Store?
The information stored depends on the application, but a password manager commonly supports several types of sensitive information.
- Website usernames and passwords
- Website addresses
- Secure notes
- Recovery information
- Other credentials or sensitive details
Some password managers also allow you to organize stored items into categories, making larger vaults easier to navigate.
What Is Encryption in a Password Manager?
Encryption transforms readable information into protected data that cannot be easily understood without the appropriate cryptographic key.
A password manager uses encryption to protect the contents of its vault. The specific encryption algorithm and key-management design depend on the application.
Encryption is an important part of password-manager security, but it is not the only consideration. The security of the device, the strength of the master password, the application's implementation, and how backups are handled can all matter as well.
Password Manager vs. Browser Password Storage
Modern web browsers can store passwords, which can be convenient for many users. Dedicated password managers provide a different approach with features specifically designed around credential management.
Depending on the application, a dedicated password manager may offer features such as password generation, secure notes, organization, encrypted backups, vault locking, and support for credentials beyond browser-based logins.
The right choice depends on how you use your devices and what features you need.
Cloud-Based vs. Offline Password Managers
Password managers can use different storage models. Some synchronize encrypted vaults through cloud services so that your credentials are available across multiple devices.
Other password managers keep the vault locally on your computer and do not require cloud synchronization.
Cloud synchronization can make accessing a vault across multiple devices convenient. An offline password manager can instead appeal to people who prefer keeping their encrypted vault stored locally and avoiding an online synchronization service.
Neither approach should automatically be considered secure or insecure. The important details include how the vault is encrypted, how authentication works, how keys are handled, and how the application protects the stored information.
Do You Still Need Strong Passwords If You Use a Password Manager?
Yes. A password manager helps you manage your credentials, but it does not eliminate the importance of strong passwords.
Ideally, each account should have its own unique password. A password manager can generate and store these passwords so that you don't need to memorize them individually.
Your master password also deserves particular attention. If your password manager uses a master password to protect the vault, choose one that is long, unique, and difficult for others to guess.
What Happens If You Forget Your Master Password?
The answer depends on the password manager's design.
Some services provide account-based recovery options, while applications that keep the vault entirely local may not have a way to recover the master password.
This is an important consideration when choosing a password manager. Before storing important credentials, understand how the application handles forgotten passwords, recovery, and backups.
What About Backups?
Backups can be particularly important for password managers that store vault data locally.
A backup provides another copy of your encrypted vault in case the original data is accidentally deleted, corrupted, or lost because of a hardware problem.
Backups should themselves be protected appropriately. An encrypted backup is preferable to keeping sensitive vault information as unprotected files.
Who Can Benefit From a Password Manager?
Password managers can be useful for anyone who has more online accounts than they can reasonably keep track of securely.
They can be particularly helpful if you:
- Use many different online accounts
- Want a unique password for every account
- Have difficulty remembering complex passwords
- Want to generate strong random passwords
- Need a secure place to store sensitive information
- Want to organize your credentials in one place
KeenPassword Vault
KeenPassword Vault is a Windows password manager designed for users who prefer to keep their encrypted vault locally on their computer.
The application works entirely offline and does not require an online account, cloud synchronization, or an internet connection. Your vault is stored locally and protected using AES-256-GCM encryption.
KeenPassword Vault also includes a built-in password generator, secure notes, built-in categories, search, encrypted backup and restore, and other tools for managing your credentials.
Final Thoughts
A password manager is essentially a secure place to store and manage the many credentials that are difficult to manage safely on your own.
By storing unique passwords in an encrypted vault and providing tools for generating and retrieving them, a password manager can make good password practices much easier to maintain.
When choosing one, consider more than just convenience. Look at how your data is encrypted and stored, how authentication works, whether the service requires cloud synchronization, how backups are handled, and what happens if you forget your master password.