SECURITY REPORT · EXTENSHI SCAN
Browser Sync
Firefox extension·by Multibrowser Sync - alpha
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
Browser Sync's safety score vs every other extension we've scanned
Globally
79.7%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
69.7%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
10
median 38Lower is safer
Risky permissions
5
median 1Critical + high perms
Total permissions
12
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 10 findings across 5 severities
10
findings
detected
detected
Critical00%
High440%
Medium440%
Low220%
Info00%
Permissions requested
5 risky permissions of 12 total
1 critical permission require attention
This extension requests 12 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions
Can enable, disable, or uninstall other browser extensions
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
View most visited sites
Can see your most frequently visited websites
High
Control privacy settings
Can modify browser privacy settings like Do Not Track and safe browsing
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access session data
Can query and restore recently closed tabs and windows
Medium
Monitor navigation
Can observe and track tab navigation events and URL changes
Medium
Browser settings
Can read and modify browser-wide settings
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Low
Schedule tasks
Can schedule periodic background tasks
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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