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How Bitwarden Secures Your Data

Bitwarden uses client-side zero-knowledge encryption, meaning the company cannot see its users' data.

Zero-knowledge encryption protects your data.
AI-generated illustration. Zero-knowledge encryption protects your data.

Bitwarden uses client-side zero-knowledge encryption, meaning the company cannot see its users' data. The platform protects your data using AES-CBC 256-bit end-to-end encryption and generates security keys through PBKDF2 SHA-256 or Argon2id.

You can also use the built-in Send feature to securely share end-to-end encrypted text messages and files with other people. More than 80,000 businesses and over 15 million users across 180 countries currently rely on Bitwarden for their needs. The company was founded in 2016 and is headquartered in Santa Barbara, California.

A published customer-satisfaction report ranked Bitwarden first among all the password managers it evaluated. GitHub hosts the open-source codebases that power the server, mobile apps, and computer clients created by Bitwarden. Bitwarden Secrets Manager helps DevOps, developers, and cybersecurity teams securely centralize and manage secrets. Bitwarden Passwordless.dev provides an API framework designed to reduce the complexity of implementing passkeys in applications. Users can run the platform locally or utilize a free cloud-hosted synchronization service based in Europe or the US.

Read the original reporting: https://bitwarden.com/

Sources

Verified claims

disputedBitwarden serves over 15 million users and more than 80,000 businesses across 180 countries.
disputedThe company was founded in 2016 and is headquartered in Santa Barbara, California.
disputedBitwarden uses client-side zero-knowledge encryption, meaning the company cannot see its users' data.
disputedThe platform secures data by end-to-end encrypting with AES-CBC 256-bit and deriving keys via PBKDF2 SHA-256 or Argon2id.
disputedBitwarden scored 99/100 and ranked first in customer satisfaction in the Fall 2026 G2 Password Manager Grid Report.
supportedThe codebases for Bitwarden's computer clients, mobile apps, and server are open-source and hosted on GitHub.
disputedBitwarden Send is a feature that allows the secure sharing of end-to-end encrypted text messages and files.
supportedBitwarden Secrets Manager is a sibling tool designed to let developers, DevOps, and cybersecurity teams centrally store and manage secrets.
supportedBitwarden Passwordless.dev is an API framework that minimizes the complexities associated with passkey development.
disputedThe platform supports self-hosting and offers a free cloud-hosted synchronization service in the US or Europe.

Original reporting: https://bitwarden.com/

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