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SECURITY REPORT · EXTENSHI SCAN

Is Signal by Quantum Browser Agent safe?

Checked version: 4.119.4 · Scan date (UTC): 2026-11-01

Chrome extension·by Quantum
71
/ 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

Signal by Quantum Browser Agent's safety score vs every other extension we've scanned
Globally
8%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 429,470 extensions
In Productivity
10%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 211,914 productivity extensions
Findings
105
median 20Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
0
median 14vs category median

Findings breakdown

Automated security signal · 105 distinct issues across 6 severities
105
distinct issues
detected
Scanners reported 107 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 10 total
1 critical permission require attention
This extension requests 10 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Browser debugger access

Can attach to tabs and inspect/modify all page data using Chrome DevTools protocol

High
View open tabs

Can see URLs and titles of all open tabs

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Add context menu items

Can add custom items to the right-click context menu

Low
Schedule tasks

Can schedule periodic background tasks

Low
Display info

Can query display and monitor information

Low
Create offscreen documents

Can create hidden documents for background processing tasks

Low
Use side panel

Can display content in the browser side panel

Info
windows

No additional information available.

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Scan performed by extenshi.io · Nov 1, 2026
Browser extensions made transparent.

What this assessment covers

Store listing
Chrome
Checked version
4.119.4
Current listed version
4.119.4
Scan date (UTC)
Assessment status
Completed

Recorded findings: 2 critical and 5 high severity. Read the finding details before interpreting the score; automated flags are not proof of malicious behaviour.

Automated analysis looks for suspicious code, permissions and other risk signals. It does not observe every runtime behaviour or independently audit the publisher’s servers. A low-risk result is not a guarantee of safety. How our checks work.

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