SECURITY REPORT · EXTENSHI SCAN
Letter Carrier - Certified Mail
Firefox extension·by Letter Carrier - Certified Mail Online
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
Letter Carrier - Certified Mail's safety score vs every other extension we've scanned
Globally
82.52%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
72.52%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
5
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
2
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 5 distinct issues across 6 severities
5
distinct issues
detected
detected
Scanners reported 7 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical120%
High120%
Needs Review00%
Medium120%
Low240%
Info00%
Permissions requested
2 risky permissions of 2 total
2 high-risk permissions require attention
This extension requests 2 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Are you the author of Letter Carrier - Certified Mail?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Letter Carrier - Certified Mail'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.