Security Alert: Confirmed Malware

This extension was removed from the Chrome Web Store as malware. Do not install it.Extension: Understanding Errors

CRITICAL RISKRemoved from Chrome Web Store

Understanding Errors

ID: dgcoeljmbmjppdaiiimcepjijfeleain

Could be malicious

Supported Languages

🇺🇸English

Extension Info & Metadata

Status

Removed

Version

2.0

Size

0.02 MB

Rating

0.0/5

Reviews

Users

9,699

Type

Extension

Updated

Aug 12, 2023

Publisher Contextual Analysis

Author: https://understandingerrors.comView Profile
Privacy: Privacy Policy
Help: Help Center
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Total Extensions

Active

Obsolete

Listed

Unlisted

Total Users

9,699

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Understanding Errors is an advanced extension offers seamless navigation, relevant results, even on error-prone sites.

Understanding Errors was developed to simplify the internet for newcomers and those who are not familiar with browsing. This is made possible by our advanced software and browser extension. The Understanding Errors simplifies figuring out which errors you come across and giving you information about them. Its purpose is to make it easier for people who are inexperienced with browsing to have a smoother online experience without being confused by error messages. The Understanding Errors extension offers inexperienced users the advantages of our powerful tool, guiding them to make better choices online and providing insights into their online activities. You'll appreciate the links to relevant sources of information and articles that help you grasp what you're reading. Understanding Errors collaborates with partners like Yahoo.com, errors.net, and others. This collaboration aims to assist users who often come across websites showing NX domain errors, making their browsing journey more seamless.

User Growth

Showing data from Aug 13, 2023 to Feb 02, 2024

Versions

No change in user count

Compared to 3 months ago

1 version released in this period

Rating Count

Total: 0 ratings

Average Rating

Current: 0.00 / 5.0

Extracted Data

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By severity

Critical4

High2

Medium1

Low0

Versions scanned

Showing 1 of 1 scanned version with more than one unique finding. Counts are unique findings that include each version.

Extension Version	Code Review Findings
2.0 Code review	7

Extension Version	Code Review Findings
2.0	7

Files with findings

2 distinct paths — top paths by unique finding count:

worker.js6
performance.js1

S.No.	Category	Severity	File	Summary	Found in Version
1	Data Exfiltration	critical	worker.js (line 83)	Every page load on every domain triggers a POST to `errors.net/performance/` carrying the user's persistent UUID, full navigation timing, and window/screen dimension fingerprint. The remote response is then acted upon…	2.0
2	Network Interception	critical	worker.js (line 58)	On any HTTP 4xx/5xx response for a top-level navigation across all hosts, the worker silently closes the user's tab (`chrome.tabs.remove`) and opens a new tab pointing at attacker-controlled `errors.net/error/` with t…	2.0
3	Network Interception	critical	worker.js (line 41)	On any DNS resolution failure for a main-frame navigation, the extension redirects the user's current tab to `errors.net/error/` with the full failed URL and the persistent UUID. Any typo, captive-portal failure, or o…	2.0
4	Remote Code Loading	critical	worker.js (line 35)	The JSON response from the remote `errors.net/performance/` endpoint is passed directly into `chrome.tabs.create()` / `chrome.windows.create()`. The server can therefore command the extension to open arbitrary URLs in…	2.0
5	Tracking	high	worker.js (line 105)	On install, the extension generates a persistent UUID stored in `chrome.storage.sync` (synced across the user's Chrome profiles) and immediately phones home with it to `understandingerrors.com/thankyou/?uuid=...`. Tha…	2.0
6	Tracking	high	performance.js (line 17)	The content script (injected into every http(s) page) collects window/screen geometry — `screenTop`, `screenLeft`, `outerHeight/Width`, `innerHeight/Width` — and forwards it to the worker for transmission to `errors.n…	2.0
7	Tracking	medium	worker.js (line 1)	A hardcoded `license` API key is shipped in the extension and attached to every outbound request to `errors.net`, identifying this extension's traffic on the server. Combined with the per-user UUID, this enables the o…	2.0

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URLs

IPv4

IPv6

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

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www.w3.org	/1999/02/22-rdf-syntax-ns	http://www.w3.org/1999/02/22-rdf-syntax-ns#
ns.adobe.com	/xap/1.0/	http://ns.adobe.com/xap/1.0/
purl.org	/dc/elements/1.1/	http://purl.org/dc/elements/1.1/
ns.adobe.com	/tiff/1.0/	http://ns.adobe.com/tiff/1.0/
ns.attribution.com	/ads/1.0/	http://ns.attribution.com/ads/1.0/
ns.adobe.com	/exif/1.0/	http://ns.adobe.com/exif/1.0/
fonts.googleapis.com	/css	https://fonts.googleapis.com/css?family=Roboto:400,500,700
errors.net	-	https://errors.net/
tldrlegal.com	/license/mit-license	https://tldrlegal.com/license/mit-license
errors.net	-	https://errors.net

Showing 1 to 10 of 20 rows

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No IP addresses found

Version History

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Browse and explore files within this extension package

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Security Alert: Confirmed Malware

Understanding Errors

Supported Languages

Extension Info & Metadata

Publisher Contextual Analysis

Chrome Web Store Metadata

About this extension

Analytics & Metrics

User Growth

Rating Count

Average Rating

Static Code Security Analysis

Extracted Data

Code Review Findings Summary Across 1 Version7

Versions scanned

Files with findings

Extracted Indicators (URLs and IPs)

URLs

Contextual Analysis

Version History

Version-to-Version Code Diff

Extension Files

User Growth

Rating Count

Average Rating