Last updated: 3 February 2026
Fake add-to-carts happen when bots or fraudulent actors simulate shoppers by adding products to online shopping carts without completing purchases. While this might look like genuine engagement, it’s actually a deceptive tactic that misleads advertisers and inflates campaign metrics.
What fake add-to-carts look like
Unlike simple click fraud, fake add-to-carts involve bots mimicking real user behavior: browsing product pages, selecting items, and placing them in carts. These actions generate signals of purchase intent, but the checkout is never completed, causing a pattern of abandonment that is suspicious.
Why fraudsters create fake add-to-carts
Fraudsters use this tactic to make their fake traffic appear more legitimate. Adding items to a cart is a strong conversion signal, so bots performing this action can fool conversion tracking tools and the ad networks' fraud detection systems. This keeps advertisers spending on campaigns that seem to deliver valuable engagement but actually generate no sales.
The impact on advertisers
Fake add-to-carts distort key marketing metrics by inflating add-to-cart rates and funnel engagement figures. This leads advertisers to make decisions based on false signals, such as increasing spend on underperforming campaigns or misallocating budgets. Retargeting campaigns are also affected: advertisers often target users who added items to carts or abandoned checkout, assuming they’re close to buying. But when bots add products to carts, retargeting ends up focusing on fake users - resulting in multiple fake clicks as bots repeatedly engage with retargeted ads. Ultimately, this reduces return on ad spend (ROAS) and wastes marketing dollars.
Why fake add-to-carts are hard to detect
Traditional fraud detection tools often miss fake add-to-cart activity because bots mimic genuine user behavior with realistic timing, device signals, and navigation paths. They avoid simple patterns like rapid clicks or repeated IP addresses, making detection challenging without specialist knowledge and expertise.
How Polygraph detects and blocks fake add-to-carts
Polygraph uses an objective, highly advanced detection system that identifies bots by uncovering bugs in their frameworks, automation signals, browser tampering, and even analyzing network packet data. Unlike other tools, we don’t rely on behavioral analysis or device fingerprinting. Our technology disables bots in real time without ever blocking legitimate human visitors. Because bots are blocked from adding items to shopping carts, they can’t generate fake conversions. This, in turn, re-trains ad networks to send you only genuine human traffic, improving campaign quality and ROI.
In summary
Fake add-to-carts are a growing form of ad fraud that fools conversion tracking and misleads advertisers into wasting budget. Because bots closely mimic real shoppers, these activities often go undetected by traditional tools. Polygraph’s advanced detection capabilities help advertisers identify and block fake add-to-carts, protecting campaign performance and ROI.