extenshi.io
SECURITY REPORT · EXTENSHI SCAN

NoFollow Highlights

Firefox extension·by THOMAS
49
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

Likely abandonedsafety score reduced by 30 points

  • No update in over 6 years
Why this matters

An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.

Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue

How it ranks

NoFollow Highlights's safety score vs every other extension we've scanned
Globally
35%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 403,277 extensions
In Appearance
11%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 18,944 appearance extensions
Findings
13
median 3Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
4
median 2Declared in manifest
Active users
14
median 3vs category median

Findings breakdown

Automated security signal · 13 distinct issues across 6 severities
13
distinct issues
detected

Permissions requested

3 risky permissions of 4 total
3 high-risk permissions require attention
This extension requests 4 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

High
Access all HTTP sites

Can read and modify content on all non-encrypted websites

High
Access all HTTPS sites

Can read and modify content on all encrypted websites

Medium
Store local data

Can save data locally in the browser for persistence

Are you the author of NoFollow Highlights?

Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.

Claim this extension

Add the badge to your README

Show NoFollow Highlights's live security score on GitHub or in your docs
Extenshi security score badge preview
Markdown
[![Extenshi security score](https://catalog.extenshi.io/api/badge/127572)](https://catalog.extenshi.io/extensions/127572/security)
HTML
<a href="https://catalog.extenshi.io/extensions/127572/security"><img src="https://catalog.extenshi.io/api/badge/127572" alt="Extenshi security score" /></a>

The badge always shows the current score — it updates automatically after every scan.

Scan performed by extenshi.io · Aug 20, 2026
Browser extensions made transparent.