MasteryConnect LockDown Browser

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

LockDown Browser is a custom browser that locks down the exam environment within specific learning and assessment systems

Users

0 in 30 days

Rating

1.5 / 5

−0.01 in 30 days

Ratings

+3 in 30 days

Store rank

#405

#376 among extensions

Version

0.4.91

updated 23 Sep 2026

Users

monthly, 3 years

Latest, 15 Oct 2026: 1,000,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 43 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About MasteryConnect LockDown Browser

Mastery Connect LockDown Browser is a custom browser extension that protects the integrity of the exam process by preventing cheating by students while the exam is in session.

Growth

Window	Users	Change	Ratings	Rating
7 days	−1M	−50.0%	+1	−0.01
30 days	0	+0.0%	+3	−0.01
6 months	−1M	−50.0%	+2	+0.01
1 year	+1M	–	+8	−0.07

Version history

12 versions recorded

0.4.9123 Sep 2026

0.4.8524 Jun 2026

0.4.5324 Nov 2025

0.4.4831 Oct 2025

0.4.417 Oct 2025

0.4.343 Sep 2025

0.4.00.2824 Jul 2025

0.3.00.08216 Dec 2024

Details

Category: Workflow & Planning
First seen: 21 Feb 2023
Size: 4.6 MB
Languages: de, en, es, fr, it
Pricing: Free
Privacy policy: web.respondus.com
Extension ID: nkkighcdodpjcdenompholalclpaobff

Permissions and risk

Elevated riskimpact 4, likelihood 2

Permissions

system.displayhistorycookiesstoragewebNavigationwebRequesttabsactiveTabscriptingmanagementcontentSettingsbrowsingDatadeclarativeNetRequestWithHostAccessclipboardReadclipboardWritewallpaper

Site access

http://*/*https://*/*<all_urls>

Can read and change data on every website you visit.