Is FullScreenie: Screenshot, Annotate & Share safe to use?

FullScreenie: Screenshot, Annotate & Share has a security risk score of 100/100 (CRITICAL risk). Our security analysis detected 127 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of FullScreenie: Screenshot, Annotate & Share?

Based on our automated security analysis, FullScreenie: Screenshot, Annotate & Share presents critical 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 "FullScreenie: Screenshot, Annotate & Share" on Firefox Add-ons Safe to Install?

Name: FullScreenie: Screenshot, Annotate & Share
Availability: InStock
Rating: 5 (1 reviews)
Author: thebug

thebug · firefox · v2.3.1

FULLSCREENIE IS 100% FREE. Capture the entire page, not just what is on your screen. Edit instantly with the built in editor! Draw, add arrows, shapes, text, highlight, blur and crop before you copy or save. No extra tools needed. Share screenshots with a link right from the editor! Fast. Simple. Private. FEATURES LIST 📄 Capture full pages or just the visible area ✂️ Select a custom area of the page ✏️ Annotate with pen, arrows, boxes, text, blur and highlighter 🔲 Crop to exactly what you need 🔗 Share with a link directly from the editor 📋 Copy to clipboard in one click 💾 Save as PNG, JPEG, or PDF 🕘 Keep capture history locally on your device 🚫 No account. 🚫 No upload (unless you choose to share). 🚫 No paywall. 🔒 Everything runs locally in your browser. Shared images are stored temporarily and can be deleted anytime. KEYBOARD SHORTCUTS ⌨️ Alt+Shift+Z — Capture ⌨️ Alt+Shift+D — Toggle mode ⌨️ Alt+Shift+A — Custom area Simple, powerful, and FREE.

Risk Assessment

Analyzed

100

out of 100

CRITICAL

127 security findings detected across all analyzers

Firefox extension requesting 7 permissions

Severity Breakdown

Critical

High

Medium

Low

Info

Finding Categories

Malware Signatures

Network

IoC Indicators

YARA Rules Matched

10 rules(48 hits)

postinstall file manipulation PM Zip with js postinstall file download postinstall persistence mechanism postinstall obfuscation postinstall network communication postinstall system command NoUseWeakRandom postinstall crypto operations postinstall environment access

Requested Permissions

7 permissions

<all_urls>

Access and modify data on every website you visit

Dangerous

downloads

Manage, modify, and monitor downloads

High

clipboardWrite

Low

storage

Low

contextMenus

Low

notifications

Low

unlimitedStorage

Low

About This Extension

Detailed Findings

60 total

YARA Rule Matches

10 rules

Indicators of Compromise

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

URLs

IP Addresses

Domains

Strings

All Indicators · 67

Domain

detected Domain: mstyle.id

XIOC detected Domain: mstyle.id

extracted_from_files

Domain

detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

detected IP: ::af

XIOC detected IP: ::af

extracted_from_files

URL

detected URL: https://addons.mozilla.org/en-US/firefox/addon/fullscreenie/

XIOC detected URL: https://addons.mozilla.org/en-US/firefox/addon/fullscreenie/

extracted_from_files

Hash

detected MD5 Hash: aa84d5e6687b4a26abb251729df7ec58

XIOC detected MD5 Hash: aa84d5e6687b4a26abb251729df7ec58

extracted_from_files

Hash

detected MD5 Hash: e88d7835c841cc822bccd85e5689953f

XIOC detected MD5 Hash: e88d7835c841cc822bccd85e5689953f

extracted_from_files

Domain

detected Domain: conflict.name

XIOC detected Domain: conflict.name

extracted_from_files

Domain

detected Domain: field.id

XIOC detected Domain: field.id

extracted_from_files

Domain

detected Domain: fullscreenie.com

XIOC detected Domain: fullscreenie.com

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://share.fullscreenie.com';

XIOC detected URL: https://share.fullscreenie.com';

extracted_from_files

URL

detected URL: https://addons.mozilla.org/en-US/firefox/addon/fullscreenie/reviews/'

XIOC detected URL: https://addons.mozilla.org/en-US/firefox/addon/fullscreenie/reviews/'

extracted_from_files

URL

detected URL: https://fullscreenie.com

XIOC detected URL: https://fullscreenie.com

extracted_from_files

Domain

detected Domain: dc.save

XIOC detected Domain: dc.save

extracted_from_files

Domain

detected Domain: ann.center

XIOC detected Domain: ann.center

extracted_from_files

Domain

detected Domain: ta.id

XIOC detected Domain: ta.id

extracted_from_files

Domain

detected Domain: e.target.id

XIOC detected Domain: e.target.id

extracted_from_files

Domain

detected Domain: r.id

XIOC detected Domain: r.id

extracted_from_files

Domain

detected Domain: cmd.name

XIOC detected Domain: cmd.name

extracted_from_files

Domain

detected Domain: tool.id

XIOC detected Domain: tool.id

extracted_from_files

Domain

detected Domain: c.name

XIOC detected Domain: c.name

extracted_from_files

Domain

detected Domain: status.id

XIOC detected Domain: status.id

extracted_from_files

Domain

detected Domain: warn.id

XIOC detected Domain: warn.id

extracted_from_files

Domain

detected Domain: drawrect.top

XIOC detected Domain: drawrect.top

extracted_from_files

Domain

detected Domain: containerrect.top

XIOC detected Domain: containerrect.top

extracted_from_files

Domain

detected Domain: ctx.save

XIOC detected Domain: ctx.save

extracted_from_files

Domain

detected Domain: err.name

XIOC detected Domain: err.name

extracted_from_files

Domain

detected Domain: star.style.top

XIOC detected Domain: star.style.top

extracted_from_files

Domain

detected Domain: wrap.style.top

XIOC detected Domain: wrap.style.top

extracted_from_files

Domain

detected Domain: e.target

XIOC detected Domain: e.target

extracted_from_files

Domain

detected Domain: rect.top

XIOC detected Domain: rect.top

extracted_from_files

Domain

detected Domain: cursoroverlay.style.top

XIOC detected Domain: cursoroverlay.style.top

extracted_from_files

Domain

detected Domain: 1-sp.life

XIOC detected Domain: 1-sp.life

extracted_from_files

Domain

detected Domain: p.life

XIOC detected Domain: p.life

extracted_from_files

Domain

detected Domain: 1-p.life

XIOC detected Domain: 1-p.life

extracted_from_files

Domain

detected Domain: fxctx.save

XIOC detected Domain: fxctx.save

extracted_from_files

Domain

detected Domain: sp.lat

XIOC detected Domain: sp.lat

extracted_from_files

Domain

detected Domain: performance.now

XIOC detected Domain: performance.now

extracted_from_files

Domain

detected Domain: overlay.id

XIOC detected Domain: overlay.id

extracted_from_files

Domain

detected Domain: browser.downloads.download

XIOC detected Domain: browser.downloads.download

extracted_from_files

Domain

detected Domain: active.id

XIOC detected Domain: active.id

extracted_from_files

Domain

detected Domain: objects.map

XIOC detected Domain: objects.map

extracted_from_files

Domain

detected Domain: u.search

XIOC detected Domain: u.search

extracted_from_files

Domain

detected Domain: tg.ph

XIOC detected Domain: tg.ph

extracted_from_files

Domain

detected Domain: sp.life

XIOC detected Domain: sp.life

extracted_from_files

Domain

detected Domain: flamectx.save

XIOC detected Domain: flamectx.save

extracted_from_files

Domain

detected Domain: browser.downloads.show

XIOC detected Domain: browser.downloads.show

extracted_from_files

Domain

detected Domain: share.fullscreenie.com

XIOC detected Domain: share.fullscreenie.com

extracted_from_files

Domain

detected Domain: date.now

XIOC detected Domain: date.now

extracted_from_files

Domain

detected Domain: images.map

XIOC detected Domain: images.map

extracted_from_files

Domain

detected Domain: tab.id

XIOC detected Domain: tab.id

extracted_from_files

Domain

detected Domain: r.top

XIOC detected Domain: r.top

extracted_from_files

Domain

detected Domain: sidebars.map

XIOC detected Domain: sidebars.map

extracted_from_files

Domain

detected Domain: mozilla.com

XIOC detected Domain: mozilla.com

extracted_from_files

Domain

detected Domain: content-signature.mozilla.org

XIOC detected Domain: content-signature.mozilla.org

extracted_from_files

Domain

detected Domain: ta3e7ab1e584f469b3225c52a8994dca0.aa84d5e6687b4a26abb251729df7ec58.addons.mozilla.org

XIOC detected Domain: ta3e7ab1e584f469b3225c52a8994dca0.aa84d5e6687b4a26abb251729df7ec58.addons.mozilla.org

extracted_from_files

Domain

detected Domain: port.name

XIOC detected Domain: port.name

extracted_from_files

Domain

detected Domain: sender.tab

XIOC detected Domain: sender.tab

extracted_from_files

Domain

detected Domain: sender.tab.id

XIOC detected Domain: sender.tab.id

extracted_from_files

detected IP: e::af

XIOC detected IP: e::af

extracted_from_files

detected IP: ed::af

XIOC detected IP: ed::af

extracted_from_files

detected IP: ::bef

XIOC detected IP: ::bef

extracted_from_files

Domain

detected Domain: notes.md

XIOC detected Domain: notes.md

extracted_from_files

detected Domain: v4.zip

XIOC detected Domain: v4.zip

extracted_from_files

detected Domain: v2.zip

XIOC detected Domain: v2.zip

extracted_from_files

detected Domain: v3.zip

XIOC detected Domain: v3.zip

extracted_from_files

URL

detected Domain: urllink.target

XIOC detected Domain: urllink.target

extracted_from_files

Security Analysis Summary

Security Analysis Overview

FullScreenie: Screenshot, Annotate & Share is a Firefox Add-ons extension published by thebug. Version 2.3.1 has been analyzed by the Risky Plugins security platform, receiving a risk score of 100/100 (CRITICAL risk) based on 127 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: 48 finding(s)
Medium: 79 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

FullScreenie: Screenshot, Annotate & Share is published by thebug on the Firefox Add-ons marketplace. The extension has approximately 19 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.

Source Code Viewer

Source Code Not Available

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

Frequently Asked Questions

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Risk Assessment

Severity Breakdown

Finding Categories

YARA Rules Matched

Requested Permissions

About This Extension

Detailed Findings

NET-FETCH-src/background.js-1831

NET-FETCH-src/background.js-247

NET-FETCH-src/background.js-1822

NET-FETCH-src/background.js-1774

NET-FETCH-src/background.js-186

NET-FETCH-src/background.js-1577

NET-FETCH-src/background.js-1622

NET-FETCH-src/background.js-1886

NET-FETCH-src/background.js-312

NET-FETCH-src/background.js-274

MANIFEST-SENSITIVE-PERM-<ALL_URLS>

NET-FETCH-src/content.js-799

YARA Rule Matches

postinstall file manipulation

PM Zip with js

postinstall file download

postinstall persistence mechanism

postinstall obfuscation

postinstall network communication

postinstall system command

NoUseWeakRandom

postinstall crypto operations

postinstall environment access

Indicators of Compromise

All Indicators · 67

Security Analysis Summary

Security Analysis Overview

Risk Assessment

Findings Breakdown

What Was Analyzed

Developer Information

Recommendation

Frequently Asked Questions

Similar Extensions

BetterKick

LibRedirect

Mobile proxy manager

Foxhole for Claude

Study Tools voor Magister

Beautiful Hieroglyphs