SECURITY REPORT · EXTENSHI SCAN
Userback
Firefox extension·by Userback
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
Userback's safety score vs every other extension we've scanned
Globally
67.59%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
57.59%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
58
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
11
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 58 findings across 5 severities
58
findings
detected
detected
Critical12%
High814%
Medium4984%
Low00%
Info00%
Permissions requested
2 risky permissions of 11 total
1 critical permission require attention
This extension requests 11 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
View open tabs
Can see URLs and titles of all open tabs
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Add context menu items
Can add custom items to the right-click context menu
Info
https://*.app.userback.io/capture/*
No additional information available.
Info
https://*.app.userback.io/viewer/*
No additional information available.
Info
https://app.userback.io/login/?redirect=extension
No additional information available.
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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