Click Fraud & Invalid Traffic: Detect and Defend

Types of click fraud

Bot / data-center traffic — automated scripts from server farms. The bulk of invalid traffic.
Click farms — low-wage humans or racks of devices clicking ads, often concentrated in specific regions.
Competitor click-bombing — rivals clicking your search ads to drain budget and worsen your metrics.
Publisher / affiliate fraud — a dishonest traffic source sending incentivized, bot, or co-reg clicks to earn payouts.
Click injection / spoofing — mobile attribution fraud that hijacks install or conversion credit.

How it hurts affiliates

On paid traffic you pay per click, so fraud is a direct budget drain with zero conversions — it drags ROAS down and corrupts the data you optimize on. On the network side, fraud you unknowingly send gets your conversions scrubbed or your account flagged, and persistent bad traffic gets you banned. Either way, the numbers you're steering by stop being real.

How platforms detect invalid traffic

Google and Meta run automated IVT filtering — known bot signatures, data-center IP ranges, impossible click patterns, and behavioral anomalies. Networks layer their own fraud scoring, device fingerprinting, and conversion-rate thresholds on top. Detected IVT is either filtered (you're not charged) or scrubbed (conversions removed) — but detection is imperfect and always lags the fraud.

How to detect it yourself

A spike in clicks with near-zero conversions.
CTR far above benchmark with no sales.
Traffic from data-center IPs or unexpected geos.
Impossibly short time-on-page and zero scroll depth.
Identical user-agents or device fingerprints repeating.
Conversion rate that craters when a new placement turns on.

Defending against it

Exclude known-bad placements and data-center IP ranges; add IP and geo blocks; run a click-fraud protection tool (ClickCease, Fraud Blocker, TrafficGuard) on paid search; and request credits for documented IVT from the ad platform. On the network side, cut traffic sources whose conversions consistently scrub. One distinction to keep straight: click fraud is bad traffic coming in; conversion shaving is a network under-reporting the real conversions you drove — a separate dispute covered in the compliance playbook.

Frequently asked questions

What is click fraud?

Click fraud, also called invalid traffic or IVT, is clicks on ads or affiliate links generated with no genuine purchasing interest — by bots, automated scripts, click farms, or competitors deliberately draining a budget. It wastes ad spend, distorts performance data, and can trigger conversion scrubbing on the network side.

How do I detect click fraud on my campaigns?

Look for clicks that don't behave like real users: a spike in clicks with almost no conversions, click-through rates far above benchmark with no sales, traffic from data-center IPs or unexpected regions, near-zero time-on-page, and repeating user-agents or device fingerprints. A sudden drop in conversion rate when a new placement turns on is a classic signal.

Can I get refunded for click fraud?

Sometimes. Google and Meta automatically filter detected invalid traffic and don't charge you for it, and you can dispute additional suspected IVT with documentation for a credit. Refunds aren't guaranteed and the platforms' own detection is the gatekeeper, which is why many paid advertisers add third-party click-fraud protection on top.

What's the difference between click fraud and conversion shaving?

Click fraud is bad traffic coming in — bots or fraudulent clicks you pay for or send. Conversion shaving is the opposite direction: a network under-reporting the real conversions you legitimately drove, so you get paid for fewer than you earned. Click fraud is a traffic-quality problem; shaving is a payout-integrity dispute with the network.