A highly secure password management solution to store, sync, and safeguard your credentials.

C2 Password: Secure, Convenient Password Management Solution
C2 Password is a highly secure browser extension for Firefox that provides an excellent password management solution. With this tool, one can safely encrypt and sync personal information across unlimited devices. It allows users to autofill login information, auto-save new or updated passwords, generate random secure passwords, and autofill form data when shopping online. It maintains user privacy by encrypting data before it leaves your device and can be accessed from anywhere through its web portal, app, or browser extension.
Add-on stats
Manifest V2
By: Synology Inc.
Rating: 4.61
1 new ratings
(61)
Weekly download count: 91
Firefox on Android: No
Permissions:
- activeTab
- alarms
- clipboardWrite
- contextMenus
- idle
- privacy
- scripting
- storage
- unlimitedStorage
- webNavigation
Size: 4.93M
Email: c2*****@synology.com
URLs: Website
Full description: See detailed description
Ranking
Other platforms
User reviews
Pros
- Good user experience and functionality across devices (PC, Mobile)
- Reliable and secure password management
- Free to use with necessary features
- Works seamlessly without issues
Cons
- Less functionality compared to competitors like LastPass
Most mentioned
- Overall satisfaction with performance and reliability
- Ease of use across multiple devices
- Positive transition from other password managers
User reviews
by Firefox user 13286495, 2025-03-06
by Firefox user 18846033, 2025-02-21
Funktioniert SUPER.
by Firefox user 17848367, 2025-02-20
Add-on safety
Risk impact
C2 Password requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of C2 Password. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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