Companies Using Click Guardian

Our catalog files Click Guardian under retargeting, and that is wrong. Know it before you build a list from this page. Retargeting tools show ads to people who already visited. Click Guardian does something else: it watches the clicks a business pays Google for and, when a click looks fraudulent, adds the clicker's IP address to the campaign's exclusion list, as its how-it-works page describes. Our October 2026 crawl finds its script on 1,318 domains, and we matched 823 of them to a company. Before writing I fetched every homepage on the list, read the site key wherever the source shows it, and loaded 60 random sites in a browser.

What the script tells us, and what it can't

Each install carries a short site key in a variable called _cgk, usually placed through Google Tag Manager. Where the key was readable in the page source (186 sites), it sat on 142 different keys, and the shared ones belong to one business with several domains: a sail-tent maker with four, a group of Essex locksmiths with five, an insurance broker with six. A handful of keys span two or three unrelated businesses, probably an agency's shared setup, but no key covers more than six domains, so no agency or platform account distorts the count.

Whether those accounts still pay is harder. Click Guardian's tracking endpoint gives the same empty reply to any key, including a made-up one, so a lapsed subscription and a paying one look identical from outside. What I could test is that the script still runs. In the random sample of 60, 52 loaded it with a site key and fired the page-view call, 5 no longer showed it and 3 didn't open.

Sales signal: treat the list as businesses that installed click protection and still carry it, not as a verified customer roster. The key is the useful field: one key across several domains is one buyer.

Three readings, not a trend

We began tracking Click Guardian on 4 August 2026, so the chart has three points: 970 domains in August, 1,293 in September and 1,318 in October. The domains we crawl turn over every month, dead sites out and newly found ones in, and our detection widens as we go. Exits are a cleaner signal. 118 domains dropped it on at least one hostname since August, and 35 of those still ran it on another hostname when I checked, which leaves 83 domains that removed it everywhere we look, in about ten weeks.

"Click Guardian sits in our retargeting table, but its buyers want one thing: to stop paying for clicks that never turn into customers." - Elif Arslan, CMO & Co-founder at TechnologyChecker.io

Sales signal: don't pitch growth from the chart. The removals are the better prompt, because a firm that took click protection off its site has switched tools, solved the problem or given up on paid search.

Small British firms that pay per click

The customer is small. Of 753 matched companies with a known size, 62.15% have 1 to 10 staff and 28.55% have 11 to 50, so 90.7% have 50 or fewer, and only 14 have more than 200. They aren't new, either: 40.18% were founded in the 2010s and 26.34% in the 2000s, with only 10.71% from the 2020s. The pricing fits that buyer. ClickGuardian's pricing page starts at £39 ($49) a month for one website and up to £5,000 of monthly ad spend, and runs to £299 for the Scale plan.

The named users I checked on their own sites show the range: Childrensalon, the children's fashion retailer; law firms Myerson Solicitors, B P Collins and Vardags; Auto-Trail, the motorhome maker; Cezanne HR; and hotels including The Knickerbocker in New York. The vendor publishes no customer list I could cross-check, so these names rest on our detections alone.

Sales signal: these are owner-run or small-team marketing departments that run their own Google Ads. They buy tools that protect spend they can see on a credit-card statement, so savings framed in pounds per month land better than fraud statistics.

Retail, trades, law and hotels

Geography is the clearest pattern on the page. 544 matched companies are British against 180 in the United States, about three to one, with Ireland (26) and Canada (23) next and no other country above ten. Industry is spread out: Retail leads at 10.51%, Construction follows at 5.84% and Hospitality at 2.63%. Law firms appear under two LinkedIn labels, Legal Services and Law Practice, at 1.9% each; together they make 3.8%, enough for third place.

Sales signal: the US base is real but thin, 180 companies, and five of the US firms in our top 50 are hotels. For a UK seller, filter to legal, trades and retail; for a US seller, hospitality is the most concentrated pocket.

Filed with retargeting, competing with fraud tools

We have no switching data for Click Guardian yet. Our category table compares it with RTB House (49,530 domains), Seznam Sklik (14,269) and Albacross (4,441), and none of them does its job. Its working rivals are click-fraud tools, and our profiles size them: ClickCease on 33,001 domains, Fraud Blocker on 5,113, Spider AF on 1,594, ClickGUARD on 1,471 and Fraud0 on 543. Click Guardian, at 1,318, is a small specialist next to ClickCease. The overlap is tiny. Of its domains, 16 also run ClickCease, 2 run Fraud Blocker and 1 runs ClickGUARD.

"Sites rarely run two click-fraud tools. If you sell against Click Guardian, plan to replace it." - Elif Arslan, CMO & Co-founder at TechnologyChecker.io

Sales signal: competitors win these accounts at renewal. A rival with Microsoft Ads coverage on its entry plan has a concrete wedge, because Click Guardian lists Microsoft Ads only from its Growth plan.

The stack around it

Shares here are of Click Guardian's domains in our October 2026 crawl. Google Analytics runs on 97.28%. The ad tags show what these sites are protecting: DoubleClick Floodlight on 45.06% and Microsoft Advertising on 38.94%, with Pinterest Ads on 9.51%. WordPress (39.09%) and Shopify (36.75%) are the main platforms, with WooCommerce on 13.06% and Elementor on 12%. Consent is fragmented: iubenda (10.64%) and CookieYes (9.89%) lead, and no banner covers more than about one site in ten.

Sales signal: about four in ten of these sites carry Microsoft Advertising's tag as well as Google's. Vendors of bid management, call tracking or landing-page tools can open with that two-network spend.

What the vendor says, and what we see

ClickGuardian's site says it protects 2,000+ businesses. Our 1,318 domains and 823 matched companies are lower, and both can be right: a customer can protect an ad account on landing pages our crawler doesn't reach, and some of our domains share one buyer. What our data adds is the shape: British, small and established.

Sales signal: quote the vendor's figure as a claim and ours as an observation. Mixing the two is the quickest way to lose a careful buyer.

Key takeaways

1. Click Guardian is click-fraud protection for Google Ads, filed in our retargeting category by mistake; compare it with ClickCease, Fraud Blocker and ClickGUARD.
2. 1,318 domains in our October 2026 crawl, 823 matched companies, 62.15% with ten staff or fewer.
3. The United Kingdom has 544 matched companies, three times the United States.
4. Paying status can't be read from outside; 52 of 60 sampled sites still load the script with a key.
5. Microsoft Advertising sits on 38.94% of its domains, a gap for its entry plans.

How to use this list

Outreach template: "Your site runs Click Guardian, so you're already paying to protect Google Ads spend. About four in ten sites like yours also carry Microsoft Advertising's tag. Is that spend protected too?"

Targeting: filter for UK companies with 1 to 50 staff in legal, construction or retail, and group domains by site key so each business gets one email.

Competitive angle: watch for domains that drop the script. The 83 full removals since August are the accounts that changed their setup.

The full list of 1,318 domains, with company size, industry, country and site stack, is on TechnologyChecker.io.