How to Stop Click Fraud on Google Ads: The Complete 2026 Prevention Guide

If you’re running Google Ads and your budget keeps disappearing with nothing to show for it, you might be dealing with click fraud.

You’re not imagining it. Global ad fraud losses surpassed $100 billion in 2025, and automated bot traffic now makes up over half of all web activity. For businesses running Google Ads — especially in competitive industries like home services, legal, and healthcare — fraudulent clicks can eat through 10–20% of your entire ad budget before a single real customer ever sees your ad.

The good news? You can fight back. This guide walks you through seven practical steps to stop click fraud on Google Ads, starting with things you can do in your account right now for free, all the way through to automated protection that catches what manual checks can’t.

If you’re not sure what click fraud is or whether you’re affected, start with our complete guide to click fraud and check the latest statistics to see the scale of the problem. Then come back here for the action plan.

Step 1: Audit Your Google Ads Account for Signs of Fraud

Before you fix anything, you need to know if you actually have a click fraud problem — and how bad it is.

Open your Google Ads account and add the following columns to your campaign view if they aren’t already visible: Invalid clicks, Invalid click rate, and Invalid interactions rate. You’ll find these under “Modify columns” → “Performance.”

These columns show you how many clicks Google has already flagged as invalid. If your invalid click rate is sitting above 3–5%, that’s a sign of elevated fraud activity. But here’s the important thing to understand: this only shows what Google caught. Industry research suggests Google’s automated filters miss a significant portion of sophisticated fraud, particularly from bots that mimic human behaviour.

Next, look at your campaign-level data for these red flags:

High CTR with low conversions. If a campaign is getting a click-through rate above your account average but converting well below it, fake clicks could be inflating the numbers. Compare CTR and conversion rate side by side for each campaign over the last 30 days.

Budget exhaustion earlier than expected. Check the “Search impression share lost (budget)” metric. If your campaigns are regularly running out of budget before the afternoon — especially if this is a recent change — fraudulent clicks may be eating through your daily cap.

Geographic anomalies. Navigate to Insights → Locations and look at where your clicks are coming from. If you’re a plumber in Manchester and you’re getting clicks from the other side of the country (or the world), something is wrong.

Extremely short sessions. If you have Google Analytics 4 linked to your Ads account, check the average engagement time for your ad traffic. A spike in sessions lasting under 5 seconds — especially if those sessions come from a single campaign — is a classic indicator of bot activity.

Write down what you find. You’ll want these baseline numbers so you can measure the impact of the changes in the following steps.

A Quick Note on Google’s Built-In Protection

Google does automatically filter some invalid clicks — they’ll appear in your “Invalid clicks” column and you won’t be charged for them. Google also occasionally issues credits for invalid clicks caught after the fact. But here’s what many advertisers don’t realise: Google’s systems are designed to protect the advertising ecosystem as a whole, not your individual campaigns. Their automated filters are tuned to catch obvious fraud — known bot signatures, data centre traffic, accidental double-clicks — but they consistently miss more sophisticated threats like competitor clicking, AI-powered bots using residential proxies, and slow-drip fraud designed to stay below detection thresholds. For a deeper look at what Google catches and what it doesn’t, see our click fraud statistics page.

Step 2: Fix Your Location Targeting Settings

This is the single most impactful free change you can make in your account, and it takes about 30 seconds.

Go to your campaign settings, scroll to “Locations,” and click “Location options.” You’ll see two targeting options:

• Presence or interest: People in, regularly in, or who’ve shown interest in your targeted locations
• Presence: People in or regularly in your targeted locations

Google defaults every campaign to “Presence or interest.” That means if you’re targeting Birmingham, your ads can show to someone in another country who once searched for something related to Birmingham. For local service businesses, this is a disaster — and it’s also a gateway for fraudulent traffic.

Switch every campaign to “Presence” targeting. This ensures your ads only appear to people who are physically in or regularly visit your service area.

For exclusions, do the same: set your exclusion method to “Presence” so that people physically in locations you’ve excluded won’t see your ads.

This one change can immediately cut waste from irrelevant and suspicious out-of-area traffic. It won’t stop all click fraud — bots using VPNs can fake their location — but it removes a major source of low-quality clicks that many advertisers don’t even realise they’re paying for.

Step 3: Clean Up Your Keyword Strategy

Broad, loosely targeted keywords are click fraud magnets. The wider your targeting, the more surface area you expose to bots and bad actors.

Here’s how to tighten things up:

Switch from Broad Match to Phrase and Exact Match

If you’re running broad match keywords, you’re essentially telling Google “show my ads for anything vaguely related to this.” That’s great for reach, but terrible for budget protection. Bots and click farms often target broad match terms because they’re easier to trigger from generic searches.

Move your highest-spend keywords to phrase match or exact match. Yes, you’ll get fewer impressions. But the clicks you do get are far more likely to be real.

Build a Proper Negative Keyword List

Negative keywords prevent your ads from showing for irrelevant searches. For home services businesses, a good starting negative keyword list includes terms like:

• Job-related terms: “jobs,” “careers,” “hiring,” “salary,” “apprentice”
• DIY and educational: “how to,” “DIY,” “tutorial,” “course,” “YouTube”
• Free-seekers: “free,” “cheap,” “discount,” “pro bono”
• Irrelevant modifiers: “near me” (if you’re not set up for it properly), location names outside your area

Review your Search Terms Report weekly. Go to Keywords → Search terms and look at what actual queries triggered your ads. You’ll almost certainly find irrelevant terms you’re paying for. Add them as negative keywords immediately.

Focus Budget on Your Best-Converting Terms

Look at which keywords actually generate phone calls, form submissions, or booked jobs — not just clicks. Shift budget toward those terms and pause or reduce spend on keywords that generate clicks but no conversions. This isn’t just good PPC practice; it reduces fraud exposure because your budget is concentrated on fewer, more specific terms that are harder for bots to target.

Step 4: Disable Search Partners (or Monitor Them Closely)

Google’s Search Partner Network places your ads on third-party search sites beyond Google.com. While this can increase reach, the fraud rates on search partner sites are significantly higher — research from 2025 found some partner networks had fraud rates approaching 47%.

To check if Search Partners are enabled, go to your campaign settings and look for “Networks.” If “Include Google search partners” is ticked, you have two options:

Option A: Disable them entirely. Untick the box. Your ads will only show on Google Search. This is the safest approach and what we’d recommend for most small businesses.

Option B: Monitor them separately. If you want to keep Search Partners enabled, segment your data by network. Go to your campaign report, click “Segment,” and select “Network (with search partners).” Compare your conversion rate and cost per conversion on Google Search vs. Search Partners. If partners are delivering a significantly worse CPA, switch them off.

Since August 2025 Google has provided full placement reports for Search Partner impressions, so you can now see exactly which sites are showing your ads. Review this regularly and exclude any sites that look suspicious or irrelevant.

Bonus: Consider Ad Scheduling

While you’re in your campaign settings, take a look at your ad schedule. If your analytics show that fraudulent clicks tend to spike outside business hours — late at night or early morning — consider reducing bids or pausing ads during those times. This isn’t a fraud prevention tool per se, but it reduces exposure during the hours when bots are most active and real customers are least likely to call.

For home services businesses, running ads from 6am to 9pm local time is usually sufficient. There’s rarely a legitimate reason for someone to click on a plumber’s ad at 2am, but there’s every reason for a bot to.

Step 5: Set Up Manual IP Exclusions

If you’ve identified specific IP addresses that are generating suspicious clicks — repeated clicks with no engagement, clicks from the same address multiple times a day — you can block them manually in Google Ads.

Here’s how:

1. Go to your campaign → Settings → Additional settings → IP exclusions
2. Enter the IP addresses you want to block
3. Click Save

You can exclude up to 500 IP addresses per campaign and an additional 500 at the account level. You can also use wildcards (e.g., 123.456.789.*) to block a range of addresses.

How to Find Suspicious IPs

If you don’t already have specific IPs flagged, here are a few ways to identify them:

• Google Analytics 4: You can’t see IP addresses directly in GA4, but you can identify suspicious traffic patterns — sessions with 0 engagement time, multiple sessions from the same city in rapid succession, or traffic from unexpected regions.
• Server logs: If you have access to your web server logs (ask your hosting provider or developer), you can cross-reference high-frequency visitors with timestamps that match your Google Ads click spikes.
• Click fraud protection tools: This is one area where automated tools like ClickGuardian excel — they identify suspicious IPs in real time and can manage your exclusion lists automatically, rotating entries to stay within the 500-address cap.

Why Manual IP Exclusion Is a Short-Term Fix

Manual IP exclusion was once the primary defence against click fraud, and it still has its place. But in 2026, it’s severely limited for several reasons:

The 500 IP limit fills up fast. If you’re in a competitive industry, 500 IPs might only cover a few weeks of fraudulent activity.

Modern bots rotate IP addresses constantly. An AI-powered bot might use a different IP address for every single click, rendering your exclusion list useless against the very threats it’s meant to stop.

VPNs and residential proxies mask real IPs. Fraudsters can route traffic through thousands of residential IP addresses, making each fraudulent click look like it’s coming from a legitimate household.

IP exclusions don’t work on Performance Max, video, hotel, app, or Smart Display campaigns. That’s a huge gap in coverage.

Manual IP exclusion is worth doing as a quick fix for obvious, repeated offenders — like a competitor who clicks your ads from the same office IP every day. But it can’t be your only line of defence.

Step 6: Monitor These 5 Metrics Weekly

Even after making the changes above, click fraud is an ongoing threat. Set up a simple weekly monitoring routine so you can catch problems early.

Every Monday morning (or whatever day works for you), spend 15 minutes checking these five metrics:

1. Invalid Click Rate (Trend Over Time)

Look at the “Invalid clicks” column in Google Ads and track the trend. A sudden jump — say from 3% to 8% — means something has changed. Either a new bot is targeting your ads or a competitor has started clicking.

2. Cost Per Conversion by Campaign

If your cost per conversion is creeping up in a specific campaign while nothing else has changed (same keywords, same landing pages, same offers), fraudulent clicks are a likely culprit. They inflate your click costs without generating any real leads.

3. Click-to-Call / Click-to-Form Ratio

For service businesses, the ratio of ad clicks to actual phone calls or form submissions is one of the clearest fraud indicators. If clicks are going up but calls and forms aren’t, something is eating your budget without generating real enquiries.

4. Time-of-Day Click Patterns

In Google Ads, go to Reports and segment by hour of day. Legitimate customers tend to click during business hours and early evenings. If you’re seeing unusual click spikes at 3am, or uniform click patterns that don’t match human behaviour, that’s a red flag.

5. Geographic Click Distribution

Check your location report weekly. New locations appearing that are outside your service area — especially international traffic for a local business — suggest either a targeting problem (go back to Step 2) or organised fraud.

Track these in a simple spreadsheet. You don’t need anything fancy — just a weekly snapshot so you can spot trends before they drain your budget.

Step 7: Add Automated Click Fraud Protection

Steps 1–6 will significantly reduce your exposure to click fraud. But here’s the reality: they’ll only get you about 30–40% of the way there.

Manual monitoring can’t match the speed and scale of modern click fraud. AI-powered bots now generate clicks that mimic real human behaviour — including realistic mouse movements, scroll patterns, and page dwell times. They rotate through thousands of IP addresses and device fingerprints. They can drain your entire daily budget in minutes if they’re targeting your account.

This is where automated click fraud protection comes in.

What Automated Protection Does That You Can’t

Real-time detection and blocking. Automated tools analyse every click as it happens — not hours or days later when you review your weekly metrics. When a suspicious click is detected, the source is blocked instantly before it can waste more of your budget.

Behavioural analysis, not just IP matching. Modern protection goes far beyond IP exclusion lists. It analyses hundreds of signals per visit: device fingerprints, browser configurations, network patterns, session behaviour, and repetition patterns. This catches bots that would sail past basic IP checks.

Automatic IP exclusion management. Instead of manually adding IPs and hitting the 500-address limit, automated tools manage your exclusion lists dynamically — adding new threats and removing old ones to stay within Google’s limits while maintaining maximum protection.

Campaign-level visibility. See exactly which campaigns, keywords, and ad groups are attracting the most fraudulent traffic, so you can make smarter decisions about where to focus your budget.

Scales across all your campaigns. Whether you’re running 2 campaigns or 20, automated protection covers everything without requiring extra manual effort.

How to Evaluate Click Fraud Protection

If you’re considering adding automated protection, look for a tool that offers:

• Real-time blocking (not just reporting after the fact)
• Google Ads API integration (so it can manage exclusions directly in your account)
• Behavioural analysis beyond IP blocking
• Transparent reporting so you can see exactly what’s being blocked and why
• A clear ROI — the tool should save you more than it costs

For a detailed breakdown of what features matter most, read our guide to choosing click fraud protection software.

What This Looks Like in Practice

Here’s a realistic example. Say you’re a plumbing company spending £3,000 per month on Google Ads with an average CPC of £25. If 15% of your clicks are fraudulent, that’s £450 per month wasted — £5,400 per year.

Automated protection that costs £49/month and blocks most of that fraud saves you over £400/month. That’s a 7x return on investment.

You can run the numbers for your own business using our free ROI Calculator — just enter your monthly spend, average CPC, and industry.

When Does Automated Protection Make Sense?

Not every advertiser needs click fraud protection on day one. Here’s a rough guide:

You probably need it now if:

• You spend £1,000+ per month on Google Ads
• You’re in a competitive local market (home services, legal, dental, real estate)
• Your cost per click is above £5
• You’ve noticed any of the warning signs in Step 6
• You’ve been in a bidding war with local competitors

You can likely wait if:

• You spend under £500/month on ads
• You’re in a low-competition niche
• Your cost per click is under £2
• Your conversion rates are healthy and stable

The decision usually comes down to simple maths: if the potential fraud waste exceeds the cost of protection, it’s a no-brainer. For most businesses spending over £1,000/month in competitive industries, the ROI is positive from month one.

Putting It All Together

Here’s your complete click fraud prevention checklist:

1. Audit your account — check invalid click rates, conversion anomalies, geographic data, and session durations
2. Fix location targeting — switch from “Presence or interest” to “Presence” on every campaign
3. Tighten keywords — move to phrase/exact match, build negative keyword lists, review search terms weekly
4. Manage Search Partners — disable them or monitor performance by network
5. Block known bad IPs — use manual exclusions for obvious repeat offenders
6. Monitor weekly — track invalid click rate, CPA, click-to-call ratio, time-of-day patterns, and geographic distribution
7. Add automated protection — let technology handle the speed and scale that manual checks can’t match

Steps 1–6 are free and you can implement them today. Step 7 is what separates businesses that lose 10–20% of their budget to fraud from those that don’t.

Frequently Asked Questions

How much does click fraud typically cost a business?

It varies by industry and spend level, but research suggests that 10–20% of PPC ad clicks are fraudulent on average, with some competitive industries seeing rates above 20%. For a business spending £5,000/month on Google Ads, that could mean £500–£1,000+ per month in wasted budget. Use our ROI Calculator to estimate the impact on your specific business.

Can I report click fraud to Google?

Yes. You can submit an invalid click report through Google Ads. Google will investigate and may issue a credit. However, this is reactive — it happens after you’ve already been charged and doesn’t prevent future fraud. Google’s automated filtering catches some invalid clicks, but it doesn’t catch everything.

Does click fraud only affect Google Search ads?

No. Click fraud affects Search ads, Display ads, Shopping campaigns, Performance Max, and even YouTube ads. Performance Max campaigns are particularly vulnerable because of the limited visibility into where your ads are shown and who’s clicking them.

Is my competitor clicking my ads considered fraud?

Yes. When a competitor intentionally clicks your ads to waste your budget, that’s a form of click fraud. It’s especially common in competitive local markets — home services, legal, dental, and other industries where a handful of businesses compete for the same customers in the same area.

Will these steps completely stop click fraud?

The manual steps (1–6) will significantly reduce your exposure, but they won’t stop everything. Modern click fraud uses AI-powered bots that can mimic human behaviour and rotate through thousands of IP addresses. Automated protection (Step 7) provides the additional layer needed to catch sophisticated threats that manual checks simply can’t keep up with.

Take Action Today

Every day without click fraud protection is a day you might be paying for clicks that will never turn into customers. The steps in this guide are designed to work whether you’re running a small local campaign or managing ads across multiple locations.

Start with the free steps — fix your location targeting, clean up your keywords, and check your Search Partner performance. Then, when you’re ready for full protection, see how much you could save with ClickGuardian.

If you run a business in a specific industry, we’ve also built dedicated protection guides:

• Plumbers
• HVAC Companies
• Roofers
• Lawyers & Legal
• Dentists
• Locksmiths
• All Industries

Last updated: March 2026. Statistics sourced from ClickGuardian’s Click Fraud Statistics page, which is updated quarterly with data from Imperva, DoubleVerify, IAS, Pixalate, and other industry sources.