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SECURITY REPORT · EXTENSHI SCAN

Is CO2ok Ninja safe?

Checked version: 0.4.2 · Scan date (UTC): 2026-11-11

Firefox extension·by CO2ok
50
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

Likely abandonedsafety score reduced by 30 points

  • No update in over 6 years
  • The developer's website is no longer reachable
Why this matters

An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.

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

CO2ok Ninja's safety score vs every other extension we've scanned
Globally
26%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 435,723 extensions
In Shopping
28%of shopping extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 4,582 shopping extensions
Findings
49
median 13Lower is safer
Critical findings
5
median 0Severity = Critical
Permissions
8
median 4Declared in manifest
Active users
1
median 3vs category median

Findings breakdown

Automated security signal · 49 distinct issues across 6 severities
49
distinct issues
detected

Permissions requested

4 risky permissions of 8 total
4 high-risk permissions require attention
This extension requests 8 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
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

High
Observe web requests

Can monitor all network requests made by the browser

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Store local data

Can save data locally in the browser for persistence

Low
Schedule tasks

Can schedule periodic background tasks

Info
*://*/*

No additional information available.

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Scan performed by extenshi.io · Nov 11, 2026
Browser extensions made transparent.

What this assessment covers

Store listing
Firefox
Checked version
0.4.2
Current listed version
0.4.2
Scan date (UTC)
Assessment status
Completed

Recorded findings: 5 critical and 12 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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