7 Signs Your Google Ads Are Under Attack from Click Fraud (And What to Do About It)

Something feels off with your Google Ads. Your budget is disappearing faster than normal. You’re getting clicks but no phone calls. The numbers just don’t add up.

You might be dealing with click fraud.

Click fraud affects roughly 1 in 5 ad clicks across Google Ads, and in competitive local industries like plumbing, HVAC, roofing, and legal services, the rates can be significantly higher. The tricky part is that Google won’t send you an alert saying “someone’s attacking your ads.” You have to spot the signs yourself.

Here are seven warning signs that your Google Ads campaigns are under attack — and exactly where to look in your account to confirm each one.

1. Your Daily Budget Is Exhausted Way Earlier Than Expected

This is usually the first thing business owners notice. You’ve set a daily budget that should last throughout the day, but by late morning your ads have stopped showing. Yesterday you were getting impressions until 6pm; today you’re out of budget by 11am.

Where to check

In Google Ads, go to Campaigns → select your campaign → Ad Schedule. Compare when your ads are running out versus when they typically ran out a week or a month ago. If there’s been a sudden shift with no change in your settings, that’s a red flag.

Also check your Budget Report (click the budget amount for any campaign). This shows daily spending patterns over time. A sudden upward spike in cost without a corresponding increase in conversions is worth investigating.

What it means

Fraudulent clicks consume your daily budget just like legitimate ones. If a competitor or bot is clicking your ads repeatedly, your budget gets burned through faster, and your ads stop showing to real potential customers during the afternoon and evening — often the times when genuine leads are actually searching.

This is especially damaging for home services businesses. A homeowner with a burst pipe at 3pm can’t see your ad because a competitor drained your budget by noon. You don’t just lose the cost of the fraudulent clicks — you lose every real lead that would have found you for the rest of the day.

For more on this specific problem, see our full guide on why your Google Ads budget is running out too fast.

2. High Click-Through Rate but Very Low (or Zero) Conversions

A healthy click-through rate with normal conversion rates is great. A suddenly elevated CTR with conversions falling off a cliff is not.

Where to check

Go to Campaigns → Columns → make sure both CTR and Conversions are visible. Compare the last 7 days against the previous 30-day average. If your CTR has increased but your conversion rate has dropped, dig deeper.

You can also segment by Network (click the Segment icon → Network). This lets you see if the suspicious clicks are coming from Google Search versus Search Partners versus the Display Network. Search Partner and Display clicks have much higher fraud rates than Google Search.

What it means

Fraudulent clickers — whether competitors, bots, or click farms — click your ad but don’t convert. They’re not going to fill in your contact form or call your number. So your CTR goes up (more clicks per impression) while your conversion rate drops (fewer conversions per click).

A sudden increase in CTR paired with a conversion rate drop is one of the most reliable signs of click fraud, especially if nothing else has changed in your campaigns (no new ad copy, no landing page changes, no seasonal shift).

3. Sudden Spikes in Clicks from Unusual Geographic Locations

You run ads targeting your local area — say a 30-mile radius around Birmingham. Then you notice clicks coming from locations well outside your service area, or from regions where you wouldn’t expect customers.

Where to check

Go to Campaigns → Locations → switch the view to Matched location. This shows where the people who clicked your ads were physically located (not just what they searched for). Look for clicks from cities or regions far from your target area.

Also check your User Location Report under Reports. This provides more detail on the actual geographic source of your traffic.

What it means

This is a strong indicator of click fraud, particularly from click farms or bots using VPNs. If you’re a plumber in Leeds and you’re getting clicks from London, Bucharest, or Jakarta, those aren’t prospective customers — they’re fraudulent clicks consuming your budget.

One important note: check your Google Ads location targeting settings. If it’s set to “Presence or interest” (the default) rather than “Presence,” you’ll naturally see some out-of-area clicks from people researching your service area. But even with this setting, a sudden spike from unusual locations is suspicious.

4. Lots of Very Short Session Durations (Under 2 Seconds)

Real visitors who click your ad and land on your website typically spend at least 10–30 seconds looking around, even if they don’t convert. Fraudulent clickers often bounce almost instantly — they click, the page starts to load, and they’re gone.

Where to check

You’ll need Google Analytics 4 for this. Go to Reports → Acquisition → Traffic acquisition. Filter by the Google Ads source. Look at the Average engagement time per session metric. If it’s dropped significantly or if a large portion of sessions are under 2 seconds, that’s concerning.

For more detail, create an Exploration in GA4 with Session source/medium as a dimension and Engagement time as a metric. Compare paid traffic engagement to organic traffic engagement — if there’s a large gap, your paid clicks may include fraudulent traffic.

What it means

Bots and automated clicking tools often register near-zero session durations because they don’t actually interact with your page. Competitors manually clicking your ads might stay slightly longer (a few seconds), but they’re not genuinely browsing your services. Either way, very short sessions from paid traffic with no conversion activity points strongly toward click fraud.

5. Increasing Cost-Per-Click with Decreasing Lead Quality

Your average CPC has been creeping up, but the leads coming in are getting worse — or drying up entirely. You’re paying more per click but getting less value from each one.

Where to check

Go to Campaigns → compare Avg. CPC over time using the date comparison feature (click the date range and enable “Compare”). Look at the last 30 days versus the previous 30 days. If CPCs are rising while conversions and conversion rates are falling, that’s a warning pattern.

Also check individual keyword performance. Sometimes the CPC increase is concentrated on specific keywords — particularly your highest-value, most competitive terms. These are the keywords competitors are most likely to target with fraudulent clicks.

What it means

When fraudulent clicks increase competition signals on your keywords, Google’s auction can push your CPCs higher. Meanwhile, the influx of non-converting clicks drags your quality metrics down. You end up paying more for worse results — a double hit to your budget.

In industries like plumbing, HVAC, and roofing where CPCs already run £5–£30+, even a small increase compounds into serious budget waste over a month.

6. Repeat Visits from the Same IP Addresses or Devices

If the same person (or bot) keeps clicking your ads from the same IP address or device, that’s classic click fraud.

Where to check

Google Ads doesn’t show individual IP addresses directly, but you can check your web server logs or use Google Analytics to identify patterns. In GA4, look at User Explorer to see individual user journeys. If you see the same users clicking from your ads repeatedly without ever converting, that’s suspicious.

Your server access logs (if you have access to them) can show raw IP addresses. Look for IPs that appear repeatedly in short timeframes, clicking on landing pages that correspond to your Google Ads campaigns.

What it means

Google’s invalid click filters do catch some obvious repeat-click patterns, but they miss a lot — particularly when the clicks are spread out over time or when the fraudster uses multiple IPs (via VPN or proxy). A competitor who clicks your ad once every few hours from a different device each time is very difficult for Google to catch automatically.

This is where automated protection tools become essential. ClickGuardian tracks device fingerprints — not just IP addresses — which means even if someone switches networks or uses a VPN, their device characteristics can still be identified and blocked.

7. Form Submissions with Obviously Fake Details (Bot Spam)

You start receiving contact form submissions with gibberish names, random email addresses, phone numbers that don’t work, or messages that make no sense. Or you see a spike in form submissions that never respond when you follow up.

Where to check

Review your recent leads. Look for patterns: submissions with random character strings as names, email addresses from disposable domains, phone numbers with incorrect digit counts, or identical messages submitted multiple times. Also check if submissions arrive at unusual times (3am on a Tuesday, for example).

What it means

Bot-generated form spam is a specific type of click fraud where automated scripts not only click your ads but also fill in your forms — either to waste your time following up on fake leads, or to make the click appear more “legitimate” to Google’s fraud filters (since a form submission counts as engagement).

This is particularly insidious because you’re not just losing money on the fraudulent clicks — you’re also wasting time and resources chasing leads that don’t exist. For businesses that use lead tracking to optimise their Google Ads campaigns, fake submissions also pollute your conversion data, causing the algorithm to optimise for the wrong types of traffic.

What to Do If You Spot These Signs

If you’ve identified one or more of these warning signs, here’s a practical action plan.

Immediate steps

Document everything. Screenshot the data you’ve found — budget depletion patterns, geographic anomalies, engagement drops. You’ll need this if you request a manual review from Google.

Check your settings. Make sure your location targeting is set to “Presence” rather than “Presence or interest.” Disable Search Partners if you haven’t already. These two changes alone can reduce fraud exposure significantly. Our complete prevention guide walks through all the settings you should check.

Request a manual review from Google. In Google Ads, go to Tools → Invalid Clicks to see what Google has already filtered. If you believe they’ve missed significant fraud, you can submit an Invalid Click Investigation through Google Ads Help. Be specific — include dates, campaigns, and the evidence you’ve gathered.

Exclude suspicious IPs. If you’ve identified specific IP addresses from your server logs, you can add them to your campaign’s IP exclusion list. Note that Google limits you to 500 exclusions per campaign plus 500 at account level, so this approach has limits for large-scale fraud.

Long-term protection

Manual monitoring catches some fraud, but it’s time-consuming and reactive — you’re always finding the problem after your budget has already been wasted. For ongoing protection, automated click fraud detection monitors every click in real time and blocks fraudulent sources before they can drain more budget.

ClickGuardian runs over 2,000 behavioural tests on every visitor, identifying bots, competitors, and click farms within milliseconds. Fraudulent sources are blocked automatically, and your budget stays focused on reaching real customers.

To see what click fraud protection could save your business, try our ROI Calculator — enter your monthly ad spend, industry, and average CPC to get a personalised estimate.

Frequently Asked Questions

How common is click fraud on Google Ads?

Industry research shows that approximately 1 in 5 Google Ads clicks are fraudulent or invalid. In competitive local service industries — plumbing, HVAC, legal, dental, roofing — rates can be higher due to competitor clicking and geographic targeting that attracts bot traffic. For the latest data, see our click fraud statistics page.

Will Google automatically refund me for fraudulent clicks?

Google’s automated invalid click filtering catches some basic fraud and you won’t be charged for those clicks. However, Google’s filters miss a significant portion of sophisticated fraud, particularly from real devices and residential networks. You can request a manual investigation, but refunds are not guaranteed and typically don’t cover the full extent of the problem.

Can I detect click fraud without any special tools?

Yes — the seven signs in this article can all be checked using Google Ads and Google Analytics. However, manual detection is time-consuming, reactive (you find fraud after it’s happened), and limited to patterns visible in aggregated data. Automated tools can detect fraud at the individual click level in real time, catching threats you’d never spot manually.

How is competitor click fraud different from bot fraud?

Competitor click fraud comes from real people deliberately clicking your ads to drain your budget. It’s harder to detect because the clicks come from real devices and real locations. Bot fraud uses automated software to click ads at scale, often from data centres or compromised devices. Both waste your budget, but they require different detection methods — which is why comprehensive protection analyses both IP/device data and behavioural patterns.

What should I do first if I think I’m a victim of click fraud?

Start by checking your Google Ads data for the signs listed in this article. Document any anomalies with screenshots and dates. Adjust your campaign settings (location targeting, Search Partners) to reduce exposure. Then consider running a free audit with a click fraud protection tool to get a definitive picture of how much fraud your campaigns are experiencing.

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Last updated: March 2026. For a full guide to preventing click fraud, see our step-by-step protection guide.