C2 Password
By: Synology Inc.
A highly secure password management solution to store, sync, and safeguard your credentials.
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Features & Capabilities
User Growth & Download Statistics
- By:
- Synology Inc.
- Daily users:
- 2,136 -45
- Rating:
- 4.64 (87)
- Version:
- 2.30.18 Last updated: 2026-04-27
- Version code:
- 6236920
- Creation date:
- 2022-05-04
- Risk:
- Very high risk impact Moderate risk likelihood
- Permissions:
- Content scripts matches:
- <all_urls>
- profile.c2.c2go.dev
- profile.c2.synology.com
- profile.c2test.synology.com
- <all_urls>
- Size:
- 4.48MB
- Email:
- c2*****@synology.com
- URLs:
- Website
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-17
- Compare stats and ranking:
- C2 Password vs pCloud Pass - Password manager
- C2 Password vs Password Protector
- C2 Password vs Cyclonis Password Manager
Ranking
Other platforms
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2024-11-18: Version 2.24.2 → 2.28.5
Add Permissions: activeTab
2024-07-15: Version 2.21.6 → 2.23.8
Add Permissions: scripting
2024-06-17: Version 2.20.5 → 2.21.6
Add Permissions: clipboardWrite
2024-02-26: Version 2.16.6 → 2.18.3
Add Permissions: webRequest webRequestBlocking
Remove Permissions: activeTab
2023-03-01: Version 2.5.7 → 2.6.5
Add Permissions: webNavigation
2022-12-20: Version 2.2.2 → 2.3.7
Add Permissions: contextMenus <all_urls>
Remove Permissions: https://*.c2.synology.com/* https://*.c2.c2go.dev/* https://*.c2test.synology.com/*
2022-08-04: Version 1.6.14 → 2.1.7
Add Permissions: activeTab alarms unlimitedStorage https://*.c2.synology.com/* https://*.c2.c2go.dev/* https://*.c2test.synology.com/*
Remove Permissions: http://*/* https://*/*
User Reviews
Reviews consistently praise C2 Password as a reliable, secure, and easy-to-use password manager with strong cross-platform support and a comprehensive feature set. Users value its reliability, security, and the warning system for staying on top of their data, plus trust in the Synology brand backing. The add-on is described as 'just works' across Mac, Android, and iOS, making it a popular choice for long-term password management. Pros
- Reliable and secure password management.
- Cross-platform compatibility across Android, iOS/macOS, and Windows.
- Comprehensive, solid feature set and easy to use.
- Trusted branding (Synology) and strong security posture.
- Security-focused features, including a warning system.
Cons
Recent reviews
Funktioniert mit Firefox 150 nicht mehr richtig. Automatisches Ausfülle geht nicht mehr.
by Ka*****, 2026-04-23
Bonjour, le remplissage automatique ne fonctionne plus avec la mise à jour Firefox 150...
by Da*****, 2026-04-21
by aS*****, 2026-04-02
Is C2 Password Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
C2 Password requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
C2 Password is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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