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SECURITY REPORT · EXTENSHI SCAN

Co:Writer

Edge extension·by Don Johnston Incorporated
33
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

Likely abandonedsafety score reduced by 30 points

  • No update in over 3 years
  • Built on Manifest V2, which Chrome and Edge are retiring
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

Co:Writer's safety score vs every other extension we've scanned
Globally
3%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,874 extensions
In Accessibility
7%of accessibility extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 2,148 accessibility extensions
Findings
99
median 13Lower is safer
Critical findings
7
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
66342
median 88vs category median

Findings breakdown

Automated security signal · 99 distinct issues across 6 severities
99
distinct issues
detected
Scanners reported 113 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

4 risky permissions of 8 total
1 critical permission require attention
This extension requests 8 permissions in total. 4 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

High
Observe web requests

Can monitor all network requests made by the browser

High
Block and modify web requests

Can intercept, block, or modify any network request before it completes

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Unlimited local storage

Can store large amounts of data locally without size limits

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Monitor navigation

Can observe and track tab navigation events and URL changes

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Scan performed by extenshi.io · Oct 22, 2026
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