SECURITY REPORT · EXTENSHI SCAN
Fennec
Firefox extension·by Fennec
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
Fennec's safety score vs every other extension we've scanned
Globally
83.44%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
73.44%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
27
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
4
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 27 findings across 5 severities
27
findings
detected
detected
Critical00%
High00%
Medium1556%
Low14%
Info1141%
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
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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