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SECURITY REPORT · EXTENSHI SCAN

History Master

Firefox extension·by Jiacai Liu
36
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

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

History Master's safety score vs every other extension we've scanned
Globally
10%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,596 extensions
In Privacy & Security
7%of privacy & security extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 12,550 privacy & security extensions
Findings
56
median 5Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 4Declared in manifest
Active users
1203
median 3vs category median

Findings breakdown

Automated security signal · 56 distinct issues across 6 severities
56
distinct issues
detected
Scanners reported 71 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

3 risky permissions of 3 total
3 high-risk permissions require attention
This extension requests 3 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Access browsing history

Can read and modify your complete browsing history

High
View open tabs

Can see URLs and titles of all open tabs

High
Manage downloads

Can initiate downloads and access your download history

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Scan performed by extenshi.io · Aug 10, 2026
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