Why invalid traffic claims are hard to prove
Allegations of click fraud appear in several kinds of dispute: an advertiser accusing a competitor of draining its budget, a business accusing its agency of buying low-quality placements, or a publisher accused of inflating ad clicks. In each one, the party making the claim usually starts with the same evidence - a jump in spend and clicks that did not turn into calls, forms or sales.
That pattern is consistent with fraud. It is also consistent with a broad-match keyword expansion, a new display placement, a landing page that broke, or a tracking tag that stopped firing. A credible analysis has to rule those ordinary explanations in or out before it says anything about intent.
What the ad platform already records
Google Ads and Microsoft Advertising both filter some invalid activity automatically and report invalid clicks and credits at the account level. Those reports are a starting point, not a conclusion. They show what the platform caught; they do not show what it missed, and they do not identify who generated the traffic.
- Invalid click and invalid interaction columns, by campaign and date
- Credit adjustments issued to the account
- Placement, search term and geographic reports for the disputed period
- Change history showing who altered bids, budgets, targeting or match types
Change history is often the most telling document. A traffic surge that begins the day a setting was changed points somewhere very different from one that begins with no change at all.
Matching platform data to the advertiser's own records
The second half of the record sits with the advertiser: web server logs, analytics data, call tracking, CRM entries and order records. A ppc expert witness compares the two sides click by click where the data allows, looking for repeated IP ranges, impossible session timing, zero-engagement visits, and geographies the campaign never targeted.
Gaps matter as much as matches. If server logs were overwritten after the dispute began, or if analytics filters excluded the traffic in question, the opinion has to say so plainly and limit itself to what the surviving data can support.
Fraud, negligence, or ordinary variance
Most paid search disputes end up sorting conduct into three buckets, and the expert's job is to show which one the evidence fits:
- Deliberate invalid activity - clicking patterns that no real buyer behaviour explains, concentrated on one advertiser or keyword set.
- Management failure - settings that a competent account manager would not have left in place, such as unchecked placement lists or runaway broad match.
- Normal market variance - auction pressure, seasonality or competitor bidding that raised costs without anyone doing anything wrong.
The standard for the second bucket comes from industry practice at the time, not from hindsight. That is why practical account management experience matters when the question is what a reasonable advertiser or agency should have noticed.
The buckets are not mutually exclusive. A competitor may have generated some invalid clicks while the account was also poorly protected, and a report that acknowledges both is usually more persuasive than one that assigns every wasted click to a single cause.
Preserving the record before it ages out
Paid search data does not last forever. Some platform reports are only available for a limited look-back window, server logs are routinely rotated, and analytics properties may be reconfigured or deleted when an agency relationship ends. By the time a demand letter is sent, part of the record may already be gone.
Early preservation steps that tend to matter most:
- Export full change history and invalid click reports for every affected account
- Download search term and placement reports at the most granular date level available
- Ask the hosting provider to stop rotating web server and firewall logs
- Save any third-party click-monitoring tool data, along with its settings
- Record who held admin access to the ad accounts and when access changed
Where both parties preserve these records promptly, the analysis can test competing explanations against the same data. Where one side's records are missing, the report should explain what that gap prevents anyone from concluding, rather than treating the absence of data as proof of either fraud or innocence.
Background behind the analysis
Dan Stratford, MBA of Stratex Digital Marketing has worked in digital marketing since the mid-1990s, including roles as Director of Performance Marketing, Chief Marketing Officer and founder of a digital marketing agency that served clients in legal, insurance, technology and eCommerce. His published credentials list 29 years in practice and two depositions or testimony appearances in the last four years.
Counsel who want an outside view of those credentials can review the independent Dan Stratford on USA Attorney Guide listing, which is a directory profile rather than a page maintained by Stratex.
Why law firms see these disputes from both sides
Law firms are among the heaviest buyers of paid search, which means many attorneys meet invalid traffic questions first as advertisers. Firms reviewing their own spend may find it useful to read about how law firms can build a sustainable digital marketing strategy, a general article on balancing paid and organic channels over time. It is further reading on marketing planning, not guidance on litigation.