SECURITY REPORT · EXTENSHI SCAN
Grasshopper
Firefox extension·by mp
0
/ 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
Grasshopper's safety score vs every other extension we've scanned
Globally
77.95%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
67.95%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
16
median 38Lower is safer
Risky permissions
4
median 1Critical + high perms
Total permissions
12
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 16 distinct issues across 6 severities
16
distinct issues
detected
detected
Scanners reported 23 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High531%
Needs Review00%
Medium1063%
Low16%
Info00%
Permissions requested
4 risky permissions of 12 total
4 high-risk permissions require attention
This extension requests 12 permissions in total. 4 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
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Access browsing history(optional)
Can read and modify your complete browsing history
High
Execute scripts in pages(optional)
Can inject and execute JavaScript code in web pages
Medium
Access session data
Can query and restore recently closed tabs and windows
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Container tabs
Can manage Firefox container tabs and their identities
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Access bookmarks
Can read and modify your saved bookmarks
Medium
Read clipboard
Can read text and data currently on your clipboard
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Low
Manage tab groups
Can create and manage tab groups
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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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