Is MasteryConnect LockDown Browser safe?

Medium risk

MasteryConnect LockDown Browser is medium risk. The rating reflects signals from our analysis that have not yet been published as detailed findings.

Respondus Incv0.4.91Chrome Web Store
46Risk
Who publishes it

Respondus Inc - 6 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Respondus Inc
Declared legal entity
Respondus Inc
Registered address
8201 164th Ave NE suite 200, Redmond, WA 98062, US
Registered contact
Respondus

Same store account

5 other listings published from this account, 2.0M+ users between them, none of them carrying a finding.

Renaissance LockDown Browser2.0M+CleanMultiversity LockDown Browser30k+MediumLockDown Browser: AP Classroom EditionCleanLockDown Browser for ALEKSHighLockDown BrowserClean

Same operator - 1 listing

Published under a different store account, but sharing the registered address, contact or declared legal entity this one gave the store.

LockItDown Browser
same declared legal entity
Low

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.4.53. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to. The current listed version is 0.4.91, which we have not unpacked yet.

  • Read and change your data on every site you visit

    http://*/* and 1 more

  • Read and change your data on every secure site you visit

    https://*/*

  • Read information about your displays

    system.display

  • Read and change your full browsing history

    history

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • Store data in your browser

    storage

  • See every page you navigate to, as you navigate to it

    webNavigation

  • Watch every request your browser makes

    webRequest

  • See the address and title of every tab you have open

    tabs

  • Act on the current tab, but only after you click the extension

    activeTab

  • Run its own code inside the pages you visit

    scripting

  • See, disable and uninstall your other extensions, including your security ones

    management

  • Change per-site browser settings such as cookies, JavaScript and camera access

    contentSettings

  • Clear your browsing history, cache and cookies

    browsingData

  • Read whatever you have copied to your clipboard

    clipboardRead

  • Write to your clipboard

    clipboardWrite

declarativeNetRequestWithHostAccesswallpaper
Updated 15 October 2026nkkighcdodpjcdenompholalclpaobff