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 snapshots

Tracking since Apr 1, 2026.

29.642520.36Apr 1, 2026May 31, 2026
View as table
DateUsersRatingReviewsVersion
Apr 1, 2026231.1
Apr 21, 2026211.1
May 6, 2026261.1
May 18, 2026291.1
May 31, 2026261.1
Now281.1

Permissions & access

Permissions
activeTabtabsscripting
Host access
http://*/*, https://*/*

Screenshots

security.txt file detector screenshot 1security.txt file detector screenshot 2security.txt file detector screenshot 3security.txt file detector screenshot 4security.txt file detector screenshot 5

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

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Data sourced from the Chrome Web Store · last verified May 31, 2026.