SECURITY REPORT · EXTENSHI SCAN
Tampermonkey
Chrome extension·by Jan Biniok
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
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
Tampermonkey's safety score vs every other extension we've scanned
Globally
3%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
8%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 6,496 productivity extensions
Findings
125
median 17Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
18
median 3Declared in manifest
Active users
12000000
median 140vs category median
Findings breakdown
Automated security signal · 125 distinct issues across 6 severities
125
distinct issues
detected
detected
Scanners reported 140 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical11%
High1714%
Needs Review00%
Medium9576%
Low1210%
Info00%
Permissions requested
7 risky permissions of 18 total
7 high-risk permissions require attention
This extension requests 18 permissions in total. 7 of them grant broad capabilities that are worth a careful look.
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
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
User scripts
Can register and execute user scripts in web pages
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
Monitor navigation
Can observe and track tab navigation events and URL changes
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
Medium
Write to clipboard
Can place content onto your clipboard
Medium
Block requests with host access
Can block or redirect network requests and requires host permissions
Low
Detect idle state
Can detect when your machine is idle, active, or locked
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Scan performed by extenshi.io · Jul 27, 2026
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