security.txt file detector
Check if a website provides a security[.]txt file.
As of May 2026, security.txt file detector has 28 users in the Privacy & Security category.
Usersup 21.7 percent+21.7%
28
28
Ratingno change0%
—
— reviews
Reviewsno change0%
—
Version
1.1
Manifest V3
History
5 snapshotsTracking since Apr 1, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 1, 2026 | 23 | — | — | 1.1 |
| Apr 21, 2026 | 21 | — | — | 1.1 |
| May 6, 2026 | 26 | — | — | 1.1 |
| May 18, 2026 | 29 | — | — | 1.1 |
| May 31, 2026 | 26 | — | — | 1.1 |
| Now | 28 | — | — | 1.1 |
Permissions & access
- Permissions
- activeTabtabsscripting
- Host access
- http://*/*, https://*/*
Screenshots
About
The extension aims at helping ethical hackers to check easily and quickly if a website publishes a security.txt file (cf. RFC 9116 A File Format to Aid in Security Vulnerability Disclosure). It does so by: - showing a red (no such file) or green icon (file present); - displaying its content. Caveat: When a [root directory]/.well-known/security.txt file exists, its content is displayed without any syntax check. Note to people intending to get in touch with me to “help my extension grow”, “drive growth for Chrome extensions”,...: don't waste your time, I definitely do not want to waste mine. This extension is, and will remain FREE.
Technical
- Version
- 1.1
- Manifest
- V3
- Size
- 8.19KiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- nnaaldofkakmddibiajkakimibmdjkhd
- Developer ID
- ubfd22a175520642a451f47c55f68bd7d
- Developer Email
- [email protected]
- Created
- Aug 28, 2025
- Last Updated (Store)
- Sep 9, 2025
- Last Scraped
- May 31, 2026
- Website
- —
- Support URL
- —
- Privacy Policy
- —
Similar extensions
Alternatives to security.txt file detector, ranked by description similarity.
Safeonweb Browser Extension
Website owner validation status and related score from the CCB.
70.0K
★ 4.4
Link Reveal
Reveal Anchor Tag URLs
58
★ 5.0
CheckMyHTTPS
CheckMyHTTPS ensures that your secured WEB connections (HTTPS) are not intercepted (neither decrypted, nor listened, nor modified).
450
★ 4.3
Safe Browsing Guard
Protects you from suspicious domains and potentially harmful downloads.
437
★ 5.0
threatxtension
Real-time OSINT & threat-intel overlay with URL analysis
5
Security Surf
Raising awareness of dangerous websites as you surf across the internet.
153
★ 3.0
Permission Scanner for Chrome
Permission Scanner audits all installed extensions and apps, analyzing their permissions, and provides quick risk score assessment.
53
LeftClick Sec
Analyze URLs for potential threats
1
Data sourced from the Chrome Web Store · last verified May 31, 2026.