SECURITY REPORT · EXTENSHI SCAN
Hero by Vivun® for Firefox
Firefox extension·by Vivun Inc.
0
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
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
Hero by Vivun® for Firefox's safety score vs every other extension we've scanned
Globally
92.86%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
82.86%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
16
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
4
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
Critical00%
High00%
Needs Review00%
Medium1169%
Low531%
Info00%
Permissions requested
2 risky permissions of 4 total
2 high-risk permissions require attention
This extension requests 4 permissions in total. 2 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
Medium
Store local data
Can save data locally in the browser for persistence
Info
https://*.vivun.com/*
No additional information available.
Are you the author of Hero by Vivun® for Firefox?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Hero by Vivun® for Firefox's live security score on GitHub or in your docs
Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.