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JustBlock Security – Ad Blocker, Malware & Phishing Protection

Chrome extension by JustBlock Security · Productivity · Workflow

  • Established publisher
  • Trader

A Chrome extension in Productivity · Workflow with 70 000 users, an established extension.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
70 000
Rating
3.9 (2 580 ratings)
Users, last 18 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
3.0.6
Updated in the store
2026-08-26
Published
2011-09-18
Manifest
V3
Browser access
3 permissions

How it has moved

Users
unchanged since 31.08
70k · 2 readings
  1. 2026-08-3170k
  2. 2026-09-1770k
Rating
unchanged since 31.08
reviewsrating 3.89 · 2 readings
  1. 2026-08-31reviews2.6krating3.89
  2. 2026-09-17reviews2.6krating3.89
Users
unchanged since 31.08
70k · 2 readings
  1. 2026-08-3170k
  2. 2026-09-1770k
Rating
unchanged since 31.08
reviewsrating 3.89 · 2 readings
  1. 2026-08-31reviews2.6krating3.89
  2. 2026-09-17reviews2.6krating3.89

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • Act on the current tab, but only after you click it activeTab
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

JustBlock Security publishes 3 listings we track, 71k users between them. Listed website: justblock.org.

  1. AI Protect: Prompt & Extension Guard JustBlock Security · Make Chrome Yours · Privacy · published 2018-01-30 1k users ★ 3.3
  2. AI Privacy Cleaner – Remove Sensitive Data JustBlock Security · Make Chrome Yours · Privacy · published 2026-09-05 1 user

Like this one

Listings the catalog judges closest in what they say they do.

  1. GetAdProtect Describes nearly the same job, smaller audience 3 users (last published figure)
  2. Zevr Guard: Ad Blocker, Tracker & Malware Protection Describes nearly the same job, smaller audience 174 users ★ 4.0
  3. QuietBrowse Describes nearly the same job, smaller audience 23 users ★ 5.0
  4. Browsershield - Anti Phising Tool Describes nearly the same job, smaller audience 5k users
  5. WebScannerPro – Online Privacy Essentials Describes nearly the same job, with an established audience 80k users ★ 4.2

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.