Is Favourites safe to use?

Favourites has a security risk score of 39.98/100 (LOW risk). Our security analysis detected 98 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of Favourites?

Based on our automated security analysis, Favourites presents low risk level. The extension is analyzed for malware patterns, secret exposure, network communications, permissions, and supply chain vulnerabilities.

How is the security score calculated?

Risky Plugins calculates security scores using weighted categories: severity of findings (25 points max), malware detections (35 points), secret exposure (28 points), network communications (10 points), and obfuscation (10 points). Scores range from 0-100, with higher scores indicating greater risk.

What does CRITICAL, HIGH, MEDIUM, LOW, MINIMAL risk mean?

CRITICAL (80-100): Severe security issues like malware. HIGH (60-79): Significant vulnerabilities. MEDIUM (40-59): Moderate security concerns. LOW (20-39): Minor issues. MINIMAL (0-19): Very low risk. Always review findings before installing any extension.

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

Name: Favourites
Availability: InStock
Rating: 5 (4 reviews)
Author: flosommerfeld

flosommerfeld · firefox · v1.2.4

Risk Assessment

Analyzed

39.98

out of 100

LOW

98 security findings detected across all analyzers

Firefox extension requesting 4 permissions

Severity Breakdown

Critical

High

Medium

Low

Info

Finding Categories

Malware Signatures

IoC Indicators

YARA Rules Matched

7 rules(29 hits)

postinstall network communication postinstall file manipulation postinstall file download postinstall registry modification postinstall system command postinstall crypto operations postinstall obfuscation

Requested Permissions

4 permissions

activeTab

Medium

storage

Low

unlimitedStorage

Low

contextMenus

Low

About This Extension

Usage: Click on the icon at the toolbar to open a popup which lists your favourite websites. Favourites can be managed here, at the WebExtensions options page. They can also be added by right-clicking on any website and then selecting the "Add website to Favourites" option. <b>***</b> This WebExtension is a free and open-source software, licensed under the <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/d2b5a53795b0c2f67a44d0a973774ef1449abdde80b27cc1258ec042701c5ff9/https%3A//www.gnu.org/licenses/gpl-2.0.html">GPLv2</a>. The source code can be found online at the project's GitHub repository: <a rel="nofollow" href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6a3ba98582a7f9e210ec6e58f171dd96f1d632308d22f5532d17924f9e3ab5b1/https%3A//github.com/flosommerfeld/Favourites">https://github.com/flosommerfeld/Favourites</a>. Please note: This WebExtension respects your privacy/freedom. Your favourite websites are only saved locally and no data is ever send anywhere.

Detailed Findings

29 total

YARA Rule Matches

7 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs

IP Addresses

Domains

Strings

All Indicators · 68

URL

detected URL: http://addons.mozilla.org).

XIOC detected URL: http://addons.mozilla.org).

extracted_from_files

detected IP: ::f2

XIOC detected IP: ::f2

extracted_from_files

URL

detected URL: http://firefox.com

XIOC detected URL: http://firefox.com

extracted_from_files

URL

detected URL: https://www.w3schools.com/jsref/jsref_splice.asp*/

XIOC detected URL: https://www.w3schools.com/jsref/jsref_splice.asp*/

extracted_from_files

Hash

detected MD5 Hash: 72f77874ab782e84c31a705aad57cfdf

XIOC detected MD5 Hash: 72f77874ab782e84c31a705aad57cfdf

extracted_from_files

URL

detected URL: https://flosommerfeld.github.io

XIOC detected URL: https://flosommerfeld.github.io

extracted_from_files

URL

detected URL: https://fontawesome.com

XIOC detected URL: https://fontawesome.com

extracted_from_files

URL

detected URL: https://fontawesome.com/license/free

XIOC detected URL: https://fontawesome.com/license/free

extracted_from_files

URL

detected URL: https://www.w3schools.com/howto/howto_css_responsive_form.asp

XIOC detected URL: https://www.w3schools.com/howto/howto_css_responsive_form.asp

extracted_from_files

URL

detected URL: http://fontello.com

XIOC detected URL: http://fontello.com

extracted_from_files

URL

detected URL: http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd

XIOC detected URL: http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd

extracted_from_files

URL

detected URL: http://www.w3.org/2000/svg

XIOC detected URL: http://www.w3.org/2000/svg

extracted_from_files

URL

detected URL: https://github.com/flosommerfeld/Favourites/releases/tag/v1.2.0)

XIOC detected URL: https://github.com/flosommerfeld/Favourites/releases/tag/v1.2.0)

extracted_from_files

URL

detected URL: https://github.com/flosommerfeld/Favourites/blob/master/background-script.js)

XIOC detected URL: https://github.com/flosommerfeld/Favourites/blob/master/background-script.js)

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/permissions#activeTab_permission)

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/permissions#activeTab_permission)

extracted_from_files

URL

detected URL: https://i.imgur.com/DBqPu1a.png

XIOC detected URL: https://i.imgur.com/DBqPu1a.png

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Anatomy_of_a_WebExtension).

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Anatomy_of_a_WebExtension).

extracted_from_files

Domain

detected Domain: flosommerfeld.github.io

XIOC detected Domain: flosommerfeld.github.io

extracted_from_files

URL

detected URL: https://github.com/flosommerfeld/Favourites/issues)

XIOC detected URL: https://github.com/flosommerfeld/Favourites/issues)

extracted_from_files

URL

detected URL: https://i.imgur.com/t68JfGQ.png)](https://addons.mozilla.org/en-US/firefox/addon/favourites/)

XIOC detected URL: https://i.imgur.com/t68JfGQ.png)](https://addons.mozilla.org/en-US/firefox/addon/favourites/)

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage)

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage)

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Popups)

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Popups)

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Options_pages),

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Options_pages),

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Anatomy_of_a_WebExtension#Background_pages)

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Anatomy_of_a_WebExtension#Background_pages)

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Content_scripts).

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Content_scripts).

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json).

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json).

extracted_from_files

URL

detected URL: http://addons.mozilla.org/ca/crl.pem0N

XIOC detected URL: http://addons.mozilla.org/ca/crl.pem0N

extracted_from_files

URL

detected URL: https://img.shields.io/badge/Version-1.2.4-green.svg)](https://github.com/flosommerfeld/Favourites/releases/tag/v1.2.4)

XIOC detected URL: https://img.shields.io/badge/Version-1.2.4-green.svg)](https://github.com/flosommerfeld/Favourites/releases/tag/v1.2.4)

extracted_from_files

URL

detected URL: https://i.imgur.com/5cmaXY5.png

XIOC detected URL: https://i.imgur.com/5cmaXY5.png

extracted_from_files

URL

detected URL: https://i.imgur.com/fIgy4mk.png

XIOC detected URL: https://i.imgur.com/fIgy4mk.png

extracted_from_files

URL

detected URL: https://i.imgur.com/9t5fsag.gif

XIOC detected URL: https://i.imgur.com/9t5fsag.gif

extracted_from_files

detected IP: ::

XIOC detected IP: ::

extracted_from_files

URL

detected URL: https://github.com/flosommerfeld/Favourites/releases).

XIOC detected URL: https://github.com/flosommerfeld/Favourites/releases).

extracted_from_files

Domain

detected Domain: www.firefox.com

XIOC detected Domain: www.firefox.com

extracted_from_files

Domain

detected Domain: tabinfo.id

XIOC detected Domain: tabinfo.id

extracted_from_files

Domain

detected Domain: firefox.com

XIOC detected Domain: firefox.com

extracted_from_files

Domain

detected Domain: a.id

XIOC detected Domain: a.id

extracted_from_files

Domain

detected Domain: e.target.parentelement.parentelement.id

XIOC detected Domain: e.target.parentelement.parentelement.id

extracted_from_files

Domain

detected Domain: inputname.name

XIOC detected Domain: inputname.name

extracted_from_files

URL

detected Domain: inputurl.name

XIOC detected Domain: inputurl.name

extracted_from_files

Domain

detected Domain: fontello.com

XIOC detected Domain: fontello.com

extracted_from_files

Domain

detected Domain: www.w3.org

XIOC detected Domain: www.w3.org

extracted_from_files

Domain

detected Domain: 2.kn

XIOC detected Domain: 2.kn

extracted_from_files

Domain

detected Domain: i.np

XIOC detected Domain: i.np

extracted_from_files

Domain

detected Domain: 1.mt

XIOC detected Domain: 1.mt

extracted_from_files

Domain

detected Domain: h.fj

XIOC detected Domain: h.fj

extracted_from_files

Domain

detected Domain: zo.lk

XIOC detected Domain: zo.lk

extracted_from_files

Domain

detected Domain: i.imgur.com

XIOC detected Domain: i.imgur.com

extracted_from_files

Domain

detected Domain: github.com

XIOC detected Domain: github.com

extracted_from_files

Domain

detected Domain: developer.mozilla.org

XIOC detected Domain: developer.mozilla.org

extracted_from_files

Domain

detected Domain: pm.me

XIOC detected Domain: pm.me

extracted_from_files

URL

detected URL: https://github.com/flosommerfeld/Favourites/projects/1).

XIOC detected URL: https://github.com/flosommerfeld/Favourites/projects/1).

extracted_from_files

Domain

detected Domain: fontawesome.com

XIOC detected Domain: fontawesome.com

extracted_from_files

Domain

detected Domain: www.w3schools.com

XIOC detected Domain: www.w3schools.com

extracted_from_files

Domain

detected Domain: readme.md

XIOC detected Domain: readme.md

extracted_from_files

Domain

detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

Domain

detected Domain: mozilla.com

XIOC detected Domain: mozilla.com

extracted_from_files

Domain

detected Domain: addons.mozilla.org

XIOC detected Domain: addons.mozilla.org

extracted_from_files

Domain

detected Domain: content-signature.mozilla.org

XIOC detected Domain: content-signature.mozilla.org

extracted_from_files

Domain

detected Domain: t6b782f03588a44fc630bf7c407889970.72f77874ab782e84c31a705aad57cfdf.addons.mozilla.org

XIOC detected Domain: t6b782f03588a44fc630bf7c407889970.72f77874ab782e84c31a705aad57cfdf.addons.mozilla.org

extracted_from_files

Domain

detected Domain: img.shields.io

XIOC detected Domain: img.shields.io

extracted_from_files

detected IP: d::c

XIOC detected IP: d::c

extracted_from_files

detected IP: a::a

XIOC detected IP: a::a

extracted_from_files

detected IP: 0::

XIOC detected IP: 0::

extracted_from_files

detected IP: c::c

XIOC detected IP: c::c

extracted_from_files

detected IP: b::b

XIOC detected IP: b::b

extracted_from_files

detected IP: e::e

XIOC detected IP: e::e

extracted_from_files

URL

detected URL: https://www.firefox.com/

XIOC detected URL: https://www.firefox.com/

extracted_from_files

Security Analysis Summary

Security Analysis Overview

Favourites is a Firefox Add-ons extension published by flosommerfeld. Version 1.2.4 has been analyzed by the Risky Plugins security platform, receiving a risk score of 39.98/100 (LOW risk) based on 98 security findings.

Risk Assessment

This extension presents low security risk. Some minor findings were detected, but nothing that would prevent typical usage. Reviewing the detailed findings below is recommended before use in sensitive environments.

Findings Breakdown

High: 29 finding(s)
Medium: 69 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

Favourites is published by flosommerfeld on the Firefox Add-ons marketplace. The extension has approximately 92 users.

Recommendation

Exercise caution with this extension. Review the detailed findings and ensure the requested permissions align with the extension's stated functionality before installation.

Source Code Viewer

Source Code Not Available

Source code is not available for this version of the extension.