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23 indicators in this extension

23 indicators
0 versions analysed

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What our analysis found

Mereos, used by 5,000 people, is not yet reviewed by Extension Auditor. It was last updated in September 2026.

Mereos

Mereos Chrome extension security report

ID: pejfngbeemalmomekgadijpgafjjocnn

Supported Languages

🇧🇷Brazilian Portuguese
🇳🇱Dutch
🇺🇸English
🇫🇷French
🇩🇪German
🇮🇹Italian
🇪🇸Spanish

Extension Info & Metadata

Status
Active
Version
3.1.6
Size
17.34 MB
Rating
4.9/5
Reviews
8
Users
5,000
Type
Extension
Updated
Sep 23, 2026
Category
Make_chrome_yours Accessibility
Price
Free
Featured
No
Visibility
Listed
Mature
No
By Google
No
Trusted
No
This publisherTrack record
1extension
All still listed

Publisher Contextual Analysis

Author
mereostech
Country
FR
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Address
86 Rue Jouffroy d'Abbans Paris 75017 FR
Website
Visit
Extensions
1
Active
1
Obsolete
0
Listed
1
Unlisted
0
Users
5,000

Screenshots & videos

Screenshot 2

Install growth

Item
Type
Severity
Description
downloads
Permission
High
This permission controls file downloads and accesses download history. Rated High because it can download malicious files, access sensitive downloaded documents, and track user download patterns.
browsingData
Permission
High
This permission clears browsing data, history, and redis. Rated High because it can destroy evidence of malicious activity, clear security logs, and modify browser state.
cookies
Permission
High
This permission provides full access to read and modify browser cookies. Rated High because it can steal session tokens, modify authentication cookies, and compromise accounts across websites.
desktopCapture
Permission
High
This permission captures content from your desktop screens. Rated High because it can record sensitive information from any window, capture passwords, and monitor user activity.
Dangerous Permission Combination: desktopCapture,downloads,storage
Risk Factor
High
Enables extensive monitoring and access to sensitive aspects of your digital activities.
Contextual Risk Factors
Risk Factor
High
The following context increases the overall risk:• 20% increase: Access to sensitive domains increases potential impact• 10% increase: Early script execution enables pre-emptive content manipulation• 25% increase: Unsafe code evaluation capabilities increase attack surface
Unsafe WebAssembly Execution
Risk Factor
High
This extension's CSP allows "wasm-unsafe-eval".
tabs
Permission
Medium
This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
management
Permission
Medium
This permission manages other installed extensions. Rated Medium because it can enable/disable other extensions and modify their settings, with changes being visible to users.
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
system.cpu
Permission
Medium
This permission provides access to CPU usage and information. Rated Medium because it can monitor system performance, detect other applications, and potentially identify user activities.
system.memory
Permission
Medium
This permission accesses system memory information. Rated Medium because it can monitor memory usage patterns, detect other applications, and gather system state information.
*://canvas.mereos-secure.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://app.360learning.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://beta.certification-le-robert.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://examen.certification-le-robert.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://macertification.org/*
Host
Medium
Host permission — access limited to this URL pattern.
*://ma-certif-v2-preprod-tjqehrn2ka-ew.a.run.app/*
Host
Medium
Host permission — access limited to this URL pattern.
*://ma-certif-v2-dev-tjqehrn2ka-ew.a.run.app/*
Host
Medium
Host permission — access limited to this URL pattern.
*://ent.ecoleprogress.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://*.blackboard.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://vetagrotice.vetagro-sup.fr/*
Host
Medium
Host permission — access limited to this URL pattern.
*://school.moodledemo.net/*
Host
Medium
Host permission — access limited to this URL pattern.
*://moodle-rct.grenoble-em.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://moodle.grenoble-em.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://moodle.esc-amiens.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://learn.preprod.datascientest.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://learn.datascientest.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://*.elao.online/*
Host
Medium
Host permission — access limited to this URL pattern.
*://test-univers.app-elao.php9-01.test.voxteneo.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://*.mereos-datasafe.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://*.mereos.eu/*
Host
Medium
Host permission — access limited to this URL pattern.
*://canvas.instructure.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://*.kedgebs.com/*
Host
Medium
Host permission — access limited to this URL pattern.
*://kedgebs.helloid.com/*
Host
Medium
Host permission — access limited to this URL pattern.
Access to Sensitive Domains
Risk Factor
Medium
This extension requests access to sensitive domains: *://app.360learning.com/*
Early Content Script Execution
Risk Factor
Medium
This extension runs content scripts at document_start.
alarms
Permission
Low
This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.
notifications
Permission
Low
This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.
system.display
Permission
Low
This permission reads display configuration. Rated Low because it only accesses screen properties without content access.

23 indicators in this extension

23 indicators
0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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About this extension

This extension enables schools to proctor exams online.

Read the publisher’s full description

Safe proctoring tool Mereos is a tool created for accessibility. Using our tool enables you to take exams remotely while helping to prevent fraud. Therefore it will add an incalculable value to your online assessments and certifications. Listed below are three important points to keep in mind when using Mereos on your online tests: 1. No, you won’t be scrutinized by humans while taking your exam. Our artificial intelligence is capable of detecting any irregularity and assessing if the test is fraudulent or not. In some cases, your institution can monitor your session if the risk of fraud is high or appoint us to do so. But rest assured: your video will not be examined in the majority of cases and if it is, it would only be due to a high risk of cheating. 2. Your information is entirely safe. Our API uses an HTTPS protocol and its communication is encrypted using Transport Layer Security (TLS). Transmission to the data center is done using TLS 1.2 or 1.3 only. Data at rest in the data center is encrypted using AES-256 and is FIPS 140-2 compliant. All data centers are SOC 3 certified and encryption is secured using AES-GCM. Our extension works exclusively within the browser and therefore has no access to your local device. 3. We will never sell personal information. Our privacy settings are meant to protect your data and we could not access it if we wanted to. There is nothing for us to sell to third parties. Also note that your Chrome browser may require the following permissions: Permission 1 – “READ AND CHANGE ALL YOUR DATA ON THE WEBSITES YOU VISIT” – Unlike what it states, it does not mean our extension will read or change anything on the websites you visit. This is the permission needed by the Chrome tab capture API to allow the recording of your tabs. Tab recording will be set if, and only if, your institution decides to enable this feature on the exam you take. It is actually an optional feature. This permission is also triggered by the <all_urls> declaration which allows the extension to detect the exam. Meaning that if we did not ask for this permission, each school would need a different extension or Mereos would be forced to release permission updates every time a new customer wanted to use our Mereos extension, which would be far too complex and time-consuming. Permission 2 – “CAPTURE THE CONTENT OF YOUR SCREEN” – This allows us to provide technical support if you need it. This is also an optional feature that your exam administrator decides to set or not. Google Chrome will ask you twice about this permission and will also place a message at the bottom of your screen to remind you at all times that your screen is being captured. Screen capture will automatically end once you finish your exam. Permission 3 – “DISPLAY NOTIFICATIONS” – We need to be able to notify you about important information during your test. For example, when time is almost up. Permission 4 – “MANAGE YOUR DOWNLOADS” – Again, this permission will be asked only if your school disables your ability to download files during an exam. Mereos will use this permission and prevent test-takers from downloading items while in an exam but not before nor after the exam. Permission 5 – “MANAGE YOUR APPS, EXTENSIONS, AND THEMES” – To prevent any possible conflict between Mereos and another extension or app, we ask for this permission. However, Mereos will never install, download or modify your theme. Just like you are often asked to disable advertising block extension on websites, we need this permission to ensure you are taking the test with no possible room for fraud. Permission 6 – “MODIFY DATA YOU COPY AND PASTE” – This permission is only relevant if your institution has disabled your ability to copy and paste during your assessment. Mereos will use this permission to clear your clipboard but we will not be able to see what is or was on your clipboard. Rest assured: it will only affect your ability to copy and paste during the test but will never affect it outside of the test. Permission 7 – “IDENTIFY AND EJECT STORAGE DEVICES” – No, we will not actually eject any of your storage devices. This is to enable us to look into your resources to determine whether or not your computer meets the system requirements. If you encounter a problem before or during an exam, this information can help us better assist you. Permission 8 – “CHANGE YOUR PRIVACY-RELATED SETTINGS” – This permission is only to make our extension usable in incognito mode. Permission 9 – “CHECK CPU AND RAM CAPABILITY” – This allows us to check the capacity of hardware, especially CPU & RAM of your machine to ensure smooth uninterrupted experience during assessment.

User reviews

Extension files

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URLs
23

URLs

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No IP addresses found

23 indicators in this extension

23 indicators
0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe
Version
Size
Verdict
Findings
Permhash
3.1.6
Latest
17.34 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.5
17.33 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.4
17.33 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.3
17.27 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.2
16.93 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.1
16.92 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.1.0
17.16 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.0.9
17.16 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.0.8
16.78 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
3.0.7
15.90 MBNot scanned—
ba88ac6ce1aca4ebf7ffe6823d81647f2fb9090cc015aea7e35e5d31de4c6285
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