extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Grammarly: AI Writing and Grammar Checker App

Edge extension·by Grammarly
39
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.

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

Grammarly: AI Writing and Grammar Checker App's safety score vs every other extension we've scanned
Globally
1%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,539 extensions
In Social & Communication
0%of social & communication extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 13,675 social & communication extensions
Findings
491
median 5Lower is safer
Critical findings
16
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
12413477
median 3vs category median

Findings breakdown

Automated security signal · 491 distinct issues across 6 severities
491
distinct issues
detected
Scanners reported 581 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 8 total
3 high-risk permissions require attention
This extension requests 8 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
View open tabs

Can see URLs and titles of all open tabs

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Read clipboard

Can read text and data currently on your clipboard

Low
Use side panel

Can display content in the browser side panel

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Scan performed by extenshi.io · Jul 27, 2026
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