Click fraud in Google Ads: how to spot it, protect your campaigns and get your money back

Click fraud is the deliberate generation of fake clicks on your ads, often by competitors or bots, to drain your budget without ever producing a customer. The good news: Google detects and filters out the overwhelming majority of those invalid clicks automatically and credits them back, so there’s no need to panic. In this article you’ll read how to prevent click fraud by spotting fake clicks in your data, protecting your campaigns with simple settings and, if it really comes to that, how to build a case to claim your money back. The common thread: steer on qualified enquiries, not on chasing every suspicious click.

Planning your budget: calculate clicks, leads and cost per lead with the free Google Ads budget calculator.

What exactly is click fraud?

Click fraud is the deliberate clicking of a pay-per-click ad, manually or through software, with the aim of making you pay unnecessarily as an advertiser. The definition of click fraud on Wikipedia lines up with this. It is intentional and malicious. That’s what sets it apart from an invalid click, where there’s no bad intent involved: someone who accidentally clicks twice, or an SEO tool crawling your ad.

Who benefits? Usually your competitor, who wants to burn through your budget so that their ad replaces yours as soon as your daily budget runs out early in the day. But also dishonest publishers of ad space, affiliates who are paid per click, or sometimes simply a resentful ex-employee. Not all fraud is about money; some of it is personally or politically motivated.

The techniques vary. With botnet clicks, a fraudster controls a network of hijacked computers that mimic real behaviour, sometimes even submitting fake forms. With click farms, low-paid people do it by hand. On top of that there are tricks like ad stacking (piling ads on top of each other) and domain spoofing (junk sites posing as premium domains). For you as a B2B advertiser, the distinction matters less than the effect: you’re paying for traffic that will never become an enquiry.

How much damage does click fraud really do?

Honest answer: reliable figures are scarce and you should take them with a pinch of salt. Many of the percentages doing the rounds come from vendors of anti-fraud tools, who have an interest in making the problem look big. The scale also depends heavily on your platform, your industry (the higher the CPC, the more attractive you are as a target) and your location. Sticking one exact number on “the” click fraud rate is therefore misleading.

What is true: the damage doesn’t stop at the wasted budget. Fake clicks also pollute your data. They inflate your click-through rate for keywords that in reality produce no leads, which nudges you into investing in the wrong things. Bot traffic and fake conversions also pollute the learning data of Google’s algorithms, which can then send you even more unwanted traffic. The indirect cost (bad decisions) often weighs heavier than the direct one.

For a small team the practical lesson is simple: a few suspicious clicks a month are noise, not a disaster. Only when the pattern structurally skews your conversion data or systematically exhausts your daily budget too early does it become worth intervening.

How do you spot click fraud in your data?

You don’t feel click fraud, you see it in your numbers. Watch for these signals in your campaign data:

• Sudden spikes in clicks without you having adjusted your bids, added keywords or launched a promotion.
• A rising CTR while your conversions stay flat. More clicks, the same number of enquiries: that doesn’t add up.
• Clicks from unusual locations, for example countries or regions where you don’t sell at all.
• High bounce rates with session durations under one second. A real visitor, even one who clicks by accident, usually takes a moment before clicking back.
• Odd spending patterns, such as a daily budget that’s gone by 9 in the morning, or spend that’s far higher than on comparable campaigns.
• Deviant device or OS usage, for example a flood of clicks from one type of phone while your B2B buyers are normally on desktop.

One signal is not yet proof. If you see two or three together, it’s time to act. Solid conversion tracking is your best friend here: if you know exactly which clicks become enquiries, deviant behaviour stands out immediately. Without proper measurement you’re chasing shadows.

Spotting it is only one link in the chain. In practice you keep click fraud under control as a recurring cycle: you measure, spot, protect and learn, and then you start again. Here’s what that defence cycle looks like.

What do you do if you suspect an attack?

First, stop the bleeding. Pause the suspicious campaign or ad group immediately to prevent further losses. If you can’t pause it, cut the budget sharply to limit the damage. Then inform your client or manager about the suspicion and the steps you’ve taken.

Next you gather evidence, because you’ll need it for a possible refund and to prevent a repeat. Note down in a simple overview: the campaign and keywords involved, the IP addresses (a high volume of clicks from one IP or a series of similar IPs is suspicious), the timestamps of the clicks, and the placement URLs where your ads appeared. Server logs are the most accurate source, but the reports in Google Ads and Google Analytics 4 are more accessible for most teams.

Finally, you clean up your data. Annotate the period of the suspected attack in Google Analytics, filter the fraudulent traffic out of your analyses (based on IP or date, for example) and rebuild your remarketing lists on healthy traffic. If you don’t, you’ll be optimising your campaigns for bots.

Do you get your money back from Google?

Often largely automatically, and that’s the part many people don’t know. Google monitors your traffic, detects invalid clicks and credits them back automatically. On your billing overview you can see how many clicks they filtered out as invalid before you paid for them. Check that first: often the problem has already been largely dealt with without you doing a thing.

If you don’t get the refund automatically, submit your gathered evidence to Google support and request an investigation into invalid traffic. Be realistic about the timeline: an investigation quickly takes anywhere from several working days to multiple weeks, and advertisers report that in practice it often takes longer and involves a lot of back and forth. Also bear in mind that you can usually only request a manual investigation for clicks from the past few weeks, so don’t wait too long. A full refund is not guaranteed either. So manage your expectations and put your energy into prevention rather than into a long-running case over a small amount.

How do you protect your campaigns preventively?

Complete immunity doesn’t exist, but you can substantially reduce both the odds and the damage. The following measures are largely free and mainly cost you a bit of time in your account settings.

Exclude IP addresses, locations and devices. Block IPs that showed up in earlier attacks, locations where you don’t sell anyway, and device types your buyers barely use (based on data, not on a gut feeling). It feels like a game of whack-a-mole, because every blocked range gets replaced by a new one, but it’s an essential part of your defence.

Limit when and where your ads appear. Run them during your business hours, when real B2B buyers are online. Google explains how to set this up for search campaigns. Many bot attacks happen at night, so ad scheduling prevents your budget from being empty before your working day starts. Also consider switching off the Display Network and search partners: they’re known for weak placements and are a common source of bot traffic.

Split your campaigns into smaller, tightly defined themes. Build your Google Ads campaign around tightly themed ad groups. That way you isolate an attack faster: you pause one group without taking your whole account down.

Keep your keywords clean. A well-considered list of negative keywords doesn’t just keep consumers and job seekers out, it also shrinks the surface area fraud can latch onto. Less irrelevant traffic means less room for abuse, and it immediately helps to reduce your CPC.

At Google Ads we see that these basic measures are more than enough for most B2B accounts. You don’t need to reach for the heavy artillery straight away.

Do you need a click fraud tool?

Usually not. Honest advice: for a typical B2B account with a limited budget and solid conversion tracking, a paid anti-fraud tool adds little on top of what Google already does for free. You’d be paying to fight a problem that is already largely being handled.

A tool only becomes interesting once your situation meets a few conditions: you spend heavily per month, you run on risky networks such as Display or social, or you lose hours every week to manual checks. Those tools analyse every click and automatically block suspicious IPs in real time, including IPs that attacked other campaigns. If you’re considering one, look for real-time blocking, automatic alerts, integration with your platforms, adjustable sensitivity and detailed reporting for your reclaim cases. And always test first via a free trial on your own campaigns before you pay.

The trade-off stays level-headed: a tool that costs more than the fraud it stops is a loss-making investment. Do the maths based on what Google already filters out, not on scare figures.

Frequently asked questions about preventing click fraud

What’s the difference between click fraud and invalid clicks?

Click fraud is deliberate and malicious: someone clicks knowingly to harm you. Invalid clicks are broader and often innocent, such as an accidental double click or a bot crawling your site. Google filters out both categories largely automatically.

Should I worry about click fraud in B2B?

Rarely to an extreme degree. B2B budgets and search volumes are generally smaller than those of large webshops, which makes you less of a target. Keep an eye on your data, take the free preventive measures, but don’t lose any sleep over it.

Does Google really filter out click fraud automatically?

Yes. Google detects invalid clicks and either doesn’t charge for them or credits them back afterwards. On your billing overview you can see how many clicks were filtered out as invalid. That’s your first check before you take any further action.

How do I know whether it’s really fraud and not a normal fluctuation?

Look at combinations of signals, not at isolated numbers. A spike in clicks without matching conversions, clicks from countries where you don’t sell and near-instant bounces occurring together point to a problem. A single busy day is just noise.

Ready to protect your Google Ads budget?

Click fraud is real, but for most Belgian B2B companies it’s no reason to panic: Google already catches the bulk of it, and with a handful of smart settings you cover the rest. The real gain isn’t in chasing every suspicious click, but in campaigns that steer on qualified enquiries and revenue. Would you like us to review your account for wasted traffic and point your budget at traffic that turns into customers? Book your free intake