Is AdBlock Safe? Permissions, Privacy and Ownership Checked

Is AdBlock safe to use?

Yes. The real AdBlock, published from getadblock.com, is a long-running ad blocker with a public company behind it, regular updates (the Web Store listing shows an update on 22 September 2026) and no history of selling browsing data.

The honest caveats are about business model and look-alikes, not malware. AdBlock lets some ads through by default through the Acceptable Ads programme, and the name is generic enough that several unrelated extensions borrow it.

Want to compare it with lighter options first? Our ad blocker picks for Chrome rank the main choices, and the broader guide to spotting unsafe Chrome extensions explains the checks we run on every add-on.

Which AdBlock is this? AdBlock vs Adblock Plus vs Total Adblock

Three products with near-identical names are regularly confused. AdBlock and Adblock Plus now sit under the same owner; Total Adblock is a separate paid product from another company.

The AdBlock listing itself pitches the extension as an alternative to uBlock Origin and says it is and always will be Chrome-compatible with the latest Manifest V3 updates. That line matters because the original uBlock Origin stopped working in Chrome during the Manifest V3 transition, pushing many people toward the alternatives.

If you are torn between the eyeo engine and the open-source route, our Adblock Plus vs uBlock Origin Lite comparison covers the same engine family AdBlock uses.

What permissions does AdBlock ask for, in plain English?

AdBlock asks to read and change data on all websites, because it has to hide ad elements and stop ad requests on every page you open. No ad blocker can work with less, which is exactly why choosing a trustworthy one matters.

Read and change all your data on all websites

Lets AdBlock remove banners, video ads and pop-ups from page code. In principle this access could also read what you type, so it should only be granted to a publisher you trust.

Block content on any page (declarative rules)

Manifest V3 ad blockers hand Chrome a list of rules and Chrome itself does the blocking. The extension no longer inspects each network request directly, which limits what a blocker can see.

Storage

Saves your filter lists, allowlisted sites and premium settings.

Tabs and context menus

Powers the popup that shows blocked counts per tab and right-click options such as blocking a specific element.

1. Open chrome://extensions and find AdBlock.
2. Click Details and read the Permissions section.
3. Check Site access; it should stay on On all sites or ads will return on unlisted sites.
4. Scroll to Source and confirm the listing is the Chrome Web Store version, not an unpacked or sideloaded copy.

Every warning Chrome shows is decoded in our Chrome extension permissions reference, with notes on which ones are normal for content blockers.

Does AdBlock collect your browsing data?

AdBlock's listing says it prioritises user privacy and keeps your browsing history and personal information confidential. It also says the extension can disable third-party tracking, making it harder for advertisers to follow you across sites.

Those are the publisher's own claims, not independent findings. What we can say is that the Manifest V3 design limits how much a blocker observes, since Chrome applies the rules rather than the extension reading every request.

• Blocked by default: most banner, pop-up and video ads, per the listing.
• Optional: tracking protection and extra distraction blocking, some of it in premium.
• Account data: only needed if you buy premium features, which are sold as in-app purchases.
• Local data: allowlists and filter choices are stored in your Chrome profile.

For the full picture, read the privacy policy linked from getadblock.com before installing, because only the current policy tells you what is collected today. Anything we summarise here may change after a policy update.

Who owns AdBlock, and why do Acceptable Ads matter?

AdBlock was created in 2009 by developer Michael Gundlach, who sold it in 2015 to a buyer not named at the time. It now operates as part of eyeo, the German company that also runs Adblock Plus and the Acceptable Ads programme.

That ownership explains the most debated setting. The listing states that AdBlock participates in Acceptable Ads, so non-intrusive ads are not blocked by default, and that you can opt out in the settings.

Acceptable Ads have to meet published format rules, and large companies pay to take part, which is a major source of funding for the free extensions. Critics call that a conflict of interest; supporters say it keeps a free blocker sustainable without selling data.

• What you see with it on: small, static ads that meet the programme's standards on some sites.
• What stays blocked: pop-ups, auto-playing video ads and other intrusive formats.
• Who benefits: publishers keep some revenue, and eyeo earns fees from large participants.
• Your choice: the listing says you can switch it off at any time.

Has AdBlock had security problems?

No breach of AdBlock users' data is on record. The relevant incidents involve fake clones and one engine-level flaw that was fixed.

• Fake clones (recurring): copycat extensions using AdBlock or Adblock Plus names have reached the Web Store over the years and were removed after reports. This is the practical risk for most people.
• Filter option flaw (2019): a researcher showed that a filter option shared by eyeo's engine could let a malicious filter-list maintainer run code on certain sites. eyeo removed the option, which also covered AdBlock.
• YouTube detection (2023 onward): YouTube began warning or blocking viewers who use ad blockers. This is an arms race, not a security flaw, and results change as both sides update.

The lesson from all three: stick to the official listing, keep the extension updated, and do not add random third-party filter lists from sites you do not know.

Our uBlock Origin safety review and AdGuard safety review apply the same incident checks to the main competitors.

What is the downside of AdBlock?

The main downsides are Acceptable Ads being on by default, upsell prompts for premium features, and heavier memory use than minimalist blockers. Some sites also detect it and refuse to load.

• Some ads by design: you have to opt out to block Acceptable Ads.
• Upsells: extras such as blocking auto-play videos and animated GIFs, swapping ads for cat or landscape pictures, and themes are premium.
• Anti-adblock walls: news sites and YouTube may ask you to allowlist them or subscribe.
• Broken layouts: aggressive blocking sometimes hides a checkout button or comment box; pausing on that site fixes it.
• Pause confusion: people regularly ask why they cannot pause AdBlock, as in this Google Chrome Help thread; the fallback is to toggle the extension off in chrome://extensions.

Want to know whether it is actually catching what it should? Run our ad blocker test page with AdBlock on, then again after changing the settings below.

How to install and configure AdBlock safely

Install from the official listing, then turn off Acceptable Ads if you want every ad blocked. Menu names can shift between versions, but the path below matches the current layout closely.

1. Go to getadblock.com and follow its link to the Chrome Web Store, or open the listing titled AdBlock — block ads across the web.
2. Click Add to Chrome, then Add extension.
3. Click the puzzle-piece icon and pin AdBlock so you can see the blocked count and pause button.
4. Click the AdBlock icon, then the gear icon to open Options.
5. Open Filter lists and untick Acceptable Ads if you want no ads at all.
6. Leave optional third-party filter lists off unless you know who maintains them.
7. To allow a site you want to support, use the popup's pause or allowlist option for that domain only.

On Android, Chrome does not support extensions at all, so AdBlock for Chrome is desktop and ChromeOS only. Its maker offers a separate browser app for phones.

What is the safest ad blocker for Chrome?

The safest choice is the one with the narrowest business model and a transparent publisher. uBlock Origin Lite is open source with no paid allowlist; AdBlock is a sound pick if you prefer a friendlier interface and support team.

See how we weigh publisher trust, permissions and update history in our review methodology.