SECURITY REPORT · EXTENSHI SCAN
Signstr: A Nostr Signer for your Browser
Firefox extension·by Abhay
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
Signstr: A Nostr Signer for your Browser's safety score vs every other extension we've scanned
Globally
58.08%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
48.08%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
56
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
6
median 4All declared perms
Critical findings
4
median 2Severity = Critical
Findings breakdown
Automated security signal · 56 findings across 5 severities
56
findings
detected
detected
Critical47%
High12%
Medium5089%
Low12%
Info00%
Permissions requested
2 risky permissions of 6 total
1 critical permission require attention
This extension requests 6 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps
Can exchange messages with applications installed on your computer
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Info
*://*/*
No additional information available.
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
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