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SECURITY REPORT · EXTENSHI SCAN

User-defined Block List Plus

Firefox extension·by Deion
93
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.

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

User-defined Block List Plus's safety score vs every other extension we've scanned
Globally
93.33%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked across every extension we scan
In its category
83.33%of its category extensions carry more risk
This extension
Riskier ←→ Safer
Ranked within its category
Findings
4
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
3
median 4All declared perms
Critical findings
0
median 2Severity = Critical

Findings breakdown

Automated security signal · 4 distinct issues across 6 severities
4
distinct issues
detected
Scanners reported 5 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

2 risky permissions of 3 total
1 critical permission require attention
This extension requests 3 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites

Can read and modify content on every website you visit

High
Control proxy settings

Can route your browser traffic through a proxy server

Medium
Store local data

Can save data locally in the browser for persistence

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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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