Assessment Lock (Vretta)

Assessment Security extension for e-Assessments running on ChromeOS

Users300K

Rating2.0

Reviews19

Manifest versionV3

7-day growth0

7-day growth rate0%

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3 assets

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2.00

Latest

2.00

30-day rating change

0.00

2026年5月30日2026年6月5日

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Version1.9.2

ManifestV3

Size123KiB

Languages1English

Published--

Store updated--

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Overview

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An assessment security extension for educational environments - provides content protection, tab control, and activity monitoring, and more, for the Vretta platform.

Reviews

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The Chrome Web Store shows 19 reviews, but only 0 review bodies have synced into ExtScope so far. Showing the synced reviews available right now.

5★

4★

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1★

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AI product read

Assessment lockdown/security extension for e-assessments running on ChromeOS, designed for the Vretta educational platform

Prevents cheating during online assessments by locking the browser environment — blocking tab switching, new tab/window creation, keyboard shortcuts, context menus, DevTools, clipboard operations, and enforcing fullscreen mode, ensuring students cannot access unauthorized resources during an exam

1. The Vretta assessment platform sends a VRETTA_ACTIVATE_REQUEST message to the extension via externally_connectable. 2. The content script forwards activation to the background service worker. 3. The background sets the browser into lockdown: enforces fullscreen, blocks new tabs/windows, monitors tab events, and starts URL watchdog. 4. The content script enforces in-page restrictions: blocks context menus, keyboard shortcuts, detects DevTools, clears clipboard, and traps focus. 5. If the assessment tab is accidentally closed, it is automatically recreated at the trigger URL. 6. To end the assessment, a supervisor enters the password, triggering VRETTA_DEACTIVATE_REQUEST which lifts all restrictions.

Target users: Students on ChromeOS taking Vretta platform e-assessments / Teachers and invigilators supervising online assessments / Educational institutions using the Vretta platform

Source code is heavily minified, making some logic harder to trace, but the overall architecture is clear from the sourcemap-embedded source references and enum declarations.
The extension connects to firestore.googleapis.com for telemetry/logging (trigger_url_lost events), but the exact scope of data collection could not be fully determined from the minified code.
Cannot confirm whether the Vretta platform itself (the destination web app) requires a user login to access assessments — only the extension itself is analyzed.

Monetization

No paid features detected

No evidence of paid features, subscriptions, payment platforms, or feature gating within the extension. The 'pro' keyword hits in the static scan are false positives from obfuscated code (minified variable names). There are no Stripe, payment, subscription, billing, or upgrade references. The extension is a lockdown/security tool distributed as part of the Vretta educational platform infrastructure.

Confidence: 92
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension does not require user login. It is activated externally by the Vretta assessment platform via chrome.runtime messages (VRETTA_ACTIVATE_REQUEST) through externally_connectable. The 'supervisor password' found in the code is a local password set by a teacher/invigilator to control lockdown deactivation, not an account login. Students interact with the extension only as passive subjects of the lockdown — they never authenticate.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

敏感权限：management
扩展能力较强：tabs、storage
主机权限覆盖范围较宽

Publisher

google-web-store-admin

Independent publisher

Email: [email protected]
Phone: --
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