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SECURITY REPORT · EXTENSHI SCAN

HTTP Server header Spy

Firefox extension·by dw5
45
/ 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 5 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

HTTP Server header Spy's safety score vs every other extension we've scanned
Globally
24%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 397,240 extensions
In Privacy & Security
18%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,466 privacy & security extensions
Findings
37
median 5Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
4
median 4Declared in manifest
Active users
13
median 3vs category median

Findings breakdown

Automated security signal · 37 distinct issues across 6 severities
37
distinct issues
detected

Permissions requested

4 risky permissions of 4 total
4 high-risk permissions require attention
This extension requests 4 permissions in total. 4 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

High
Observe web requests

Can monitor all network requests made by the browser

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Scan performed by extenshi.io · Aug 11, 2026
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