Ad Fraud: How to Detect and Prevent Revenue Loss

Advertising is a critical revenue stream for businesses and a significant investment for marketers. However, this growing issue of ad fraud has become a significant challenge, draining billions from advertisers every year. This blog delves into what ad fraud is, how it happens, and what measures can mitigate its impact. 

What is Ad Fraud? 

Ad fraud means any activity done on purpose to fake advertising results, usually by using automated tools and bots to create fake clicks, views, or installs. It manipulates metrics, misleads advertisers, and diverts budgets away from genuine user engagement.  

A significant portion of ad fraud is bot driven. Bots—software programs designed to mimic human behaviour—are deployed to create the illusion of legitimate activity.  

These bots can: 

  • Simulate clicks, impressions, and even user interactions on websites or apps.
  • Perform sophisticated actions like filling out forms or mimicking scrolling behaviour.
  • Operate across multiple devices and networks to avoid detection, making them difficult to trace.

Common Types of Ad Fraud 

Click Fraud – Click fraud is a malicious activity where fake clicks are generated on online ads, either manually or through automated bots. This inflates ad costs for advertisers without delivering genuine user engagement, often benefiting malicious actors or competing businesses.

Impression Fraud – Impression fraud occurs when fraudsters use hidden ads or invisible iframes (a tool on websites to show content like ads from another source) to create fake ad impressions. These views never reach real users, misleading advertisers and inflating campaign performance metrics.

Install Fraud – Install fraud targets mobile advertising by simulating app downloads through bots or fake users. This tricks advertisers into paying for non-existent user acquisitions and inflates app install numbers.

Affiliate Fraud – Affiliate fraud involves tricking affiliate marketing systems with fake conversions or user redirects. Fraudsters manipulate tracking tools to earn commissions for actions they didn’t generate, wasting advertiser budgets.

Domain SpoofingDomain spoofing happens when fraudsters pretend that low-quality or fake websites are premium sites to trick advertisers. They manipulate ad exchanges to misrepresent the quality and authenticity of the ad placement. Fraudsters falsify domain data using tools or scripts. In programmatic advertising, this data is used to sell ad inventory, convincing advertisers they are buying space on high-traffic or reputable sites.

Ad StackingAd stacking is a fraudulent practice where multiple ads are layered on top of each other in a single ad placement, with only the topmost ad visible to users. This tricks advertisers into paying for impressions or clicks on hidden ads, resulting in wasted ad spend.

Pixel StuffingPixel stuffing is an ad fraud technique where ads are placed in a single pixel or a very small, unnoticeable area of a webpage. While the ads are invisible to users, they still generate impressions, misleading advertisers and wasting their budgets on non-viewable placements.

Geo Masking – Geo masking manipulates location data to fake a user’s geographic origin. This allows ads to be served outside the intended regions, distorting campaign delivery and targeting results.

Ad InjectionAd injection is the unauthorized insertion of ads into websites or apps, often through malware or vulnerabilities. It disrupts user experience and risks exposing users to malicious content.

The Scale and Impact of Ad Fraud 

Ad fraud is a complex issue that costs advertisers billions each year, but its impact goes well beyond just financial losses. It affects every layer of the digital advertising ecosystem, from analytics to brand reputation. Here’s how it impacts the industry: 

Misleading Analytics – Fraudulent actions skew key performance indicators (KPIs), making it hard for advertisers to measure the effectiveness of their campaigns accurately. Fake clicks and impressions inflate engagement metrics, leading to inaccurate insights. This misrepresentation causes advertisers to make misinformed decisions, potentially redirecting budgets toward ineffective strategies.

Lower ROI – Ad fraud lowers the return on investment (ROI) by channeling advertising budgets toward fake interactions. Instead of reaching genuine, interested users, ads are wasted on bots or low-quality placements. This not only diminishes the effectiveness of campaigns but also undermines overall marketing efficiency.

Loss of Trust – Ad fraud erodes trust between advertisers, platforms, and partners. Advertisers may question the integrity of publishers or ad networks when fraudulent activity is discovered, leading to strained relationships. This distrust can also affect collaboration and future investments in advertising campaigns.

Reputation Risks – Fraud can link brands to unreliable or poor-quality websites, damaging their reputation. For example, ads placed on sites filled with malicious content or fake news can harm a brand’s credibility. Even if unintended, such placements can lead to negative perceptions among consumers and stakeholders.

How to Prevent Ad Fraud in Your Campaigns 

Preventing ad fraud requires a combination of technology, best practices, and ongoing vigilance. Here are some key strategies: 

  • Use ad verification tools to track where your ads are being displayed and make sure they aren’t appearing on fraudulent or low-quality sites. These tools help detect invalid traffic, bots, and suspicious activities.
  • Analyze traffic sources regularly to ensure they are legitimate. If there’s a sudden spike in traffic or unusual patterns, investigate the source and stop any potential fraudulent campaigns.
  • Work only with trusted publishers and ad networks. Establish long-term relationships with reliable partners who have a proven track record of preventing fraud.
  • Limit ad impressions per user and set frequency caps to prevent bots from repeatedly interacting with your ads, reducing the likelihood of ad fraud.
  • Explore blockchain-based ad solutions that provide more transparency and traceability in ad transactions, reducing the chances of fraud by making ad delivery and billing transparent and verifiable.
  • Track users by device fingerprinting to prevent fraudsters from using multiple fake accounts or IP addresses to interact with ads, ensuring more accurate data.
  • Use data analytics to monitor and analyse campaign performance regularly. Inaccurate or too-perfect reports may indicate fraudulent activity, so keep an eye on discrepancies.

How Bot Management Solutions Can Help Prevent Ad Fraud    

Bot management solutions, like AppTrana WAAP, help prevent ad fraud by detecting and blocking harmful bots that mess with ad metrics, waste ad budgets, and manipulate clicks and views. These solutions use behaviour analysis to distinguish between real users and bots, ensuring that only legitimate interactions are reflected in campaign results.  

To strengthen ad fraud prevention further, technologies like Content Delivery Networks (CDNs) and browser telemetry provide essential support. CDNs distribute website traffic and content across multiple servers, enhancing bot detection by providing a wider perspective on traffic patterns. This helps identify anomalies and bot-related behaviour, while also offering geo-location tracking and rate limiting to minimize bot access.  

Meanwhile, browser telemetry collects valuable data on user interactions, such as device information and browsing behaviours. By analyzing this data, bot management solutions can pinpoint suspicious patterns and differentiate between human users and bots. Advanced AI algorithms trained on this data can detect sophisticated bots that mimic human behaviour, ensuring better security for ad campaigns. 

By integrating these advanced techniques with traditional methods like CAPTCHAs, AI-driven detection, and IP blocking, businesses can ensure that their ad campaigns are safeguarded from bot-driven fraud. This multi-layered approach ensures that only genuine user interactions are counted, protecting ad spend and improving campaign accuracy, ultimately leading to more effective advertising and a higher return on investment. 

Indusface
Indusface

Indusface is a leading application security SaaS company that secures critical Web, Mobile, and API applications of 5000+ global customers using its award-winning fully managed platform that integrates web application scanner, web application firewall, DDoS & BOT Mitigation, CDN, and threat intelligence engine.