Is "Extension" on Firefox Add-ons Safe to Install?

ReadManga · firefox · v1.11.0

Risk Assessment

Analyzed
100
out of 100
CRITICAL

131 security findings detected across all analyzers

Firefox extension requesting 32 permissions

Severity Breakdown

0
Critical
127
High
4
Medium
0
Low
0
Info

Finding Categories

127
Malware Signatures
1
Obfuscation
1
Network

YARA Rules Matched

13 rules(127 hits)
postinstall network communication postinstall registry modification postinstall crypto operations postinstall obfuscation postinstall file download postinstall file manipulation postinstall system command postinstall environment access credential env files NoUseWeakRandom LocalStorageShouldNotBeUsed OriginsNotVerified postinstall persistence mechanism

Requested Permissions

32 permissions
*://*/*
Dangerous
<all_urls>

Access and modify data on every website you visit

Dangerous
downloads

Manage, modify, and monitor downloads

High
webRequest

Intercept, modify, and block all network requests

High
webRequestBlocking

Block network requests before they complete

High
tabs
Medium
storage
Low
tabHide
Low
webNavigation
Low
https://mangalib.me/*
Low
https://mangalib.org/*
Low
https://v1.yaoilib.net/*
Low
https://hentailib.me/*
Low
https://slashlib.me/*
Low
https://v2.slashlib.me/*
Low
https://ranobelib.me/*
Low
https://remanga.org/*
Low
https://реманга.орг/*
Low
https://xn--80aaig9ahr.xn--c1avg/*
Low
https://newmanga.org/*
Low
https://readmanganato.com/*
Low
https://chapmanganato.com/*
Low
https://mangadex.org/*
Low
https://mangabuff.ru/*
Low
*://fanfox.net/*
Low
*://teletype.in/*
Low
*://telegra.ph/*
Low
*://senkuro.com/*
Low
*://ne.senkuro.com/*
Low
*://mangaplus.shueisha.co.jp/*
Low
*://3.grouple.co/*
Low
*://grouple.co/*
Low

Detailed Findings

131 total

YARA Rule Matches

13 rules

Security Analysis Summary

Security Analysis Overview

This extension is a Firefox Add-ons extension published by ReadManga. Version 1.11.0 has been analyzed by the Risky Plugins security platform, receiving a risk score of 100/100 (CRITICAL risk) based on 131 security findings.

Risk Assessment

This extension presents critical security risk. Severe issues were detected, potentially including malware indicators, exposed secrets, or dangerous behaviors. Installation is strongly discouraged until these issues are addressed.

Findings Breakdown

  • High: 127 finding(s)
  • Medium: 4 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

  • Malware Detection: YARA rule matching against 2,400+ malware signatures
  • Secret Detection: Scanning for exposed API keys, tokens, and credentials
  • Static Analysis: Code-level security analysis for common vulnerability patterns
  • Network Analysis: Detection of suspicious network communications and endpoints
  • Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

This extension is published by ReadManga on the Firefox Add-ons marketplace. The extension has approximately 17 users.

Recommendation

This extension is not recommended for installation without thorough manual review. Consider alternatives with lower risk scores, or contact the developer to address the identified security concerns.

Frequently Asked Questions

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