High index fraud traffic reduced from 26% to 2.4% in four months: Zorka.Mobi case-study by FraudScore

High index fraud traffic reduced from 26% to 2.4% in four months: Zorka.Mobi case-study by FraudScore
Zorka.Mobi partnered with FraudScore to fight ad fraud in in-app campaigns. By using FraudScore’s detailed traffic scoring and real-time alerts, they reduced high-index fraud from 26% to 2.3% in four months. The platform allowed fast detection, automatic blocking, and clear reporting—protecting advertiser budgets and preserving the agency’s reputation.

An advertising agency may find itself in a hard position when providing customers with reliable data for future investment and campaign planning. Agencies collaborate with both advertisers and affiliates:

  • Advertisers seek profitable and price-attractive channels.
  • Affiliates aim to sell traffic at the highest price.

Agencies are always at risk in traffic buying, as they are obligated to:

  1. Keep advertisers satisfied with ROMI.
  2. Control affiliate traffic reliability.

The more money an agency saves for advertisers, the higher the chance to secure future contracts.

This case study highlights the partnership between Zorka.Mobi and FraudScore in fighting ad fraud.

Background

Zorka.Mobi is a Creative Mobile Performance Agency, one of the top global players for four years. They provide a full spectrum of mobile app promotion:

  • Strategy development
  • Media planning & buying
  • Influencer marketing
  • Ads buying (via DSP)
  • Traffic buying (CPA, CPI)
  • Publishing
  • In-store promotion
  • Remarketing

Notable clients include GameInsight, ZeptoLab, Pandao, AlibabaGroup, Mail.ru Group, Pixonic, and Plarium.

The Challenge

Reputation is crucial for an ad agency. Zorka.Mobi needed tools to:

  • Control traffic quality and minimize fraud.
  • View detailed traffic data by partner.
  • Access user-friendly statistics for 3rd party arbitrage.

Most market solutions only report “fraudulent or not,” offering no drill-down or actionable insights. Agencies often lacked clear answers for affiliates when traffic was rejected, leading to disputes and potential contract breaches.

The Solution

Zorka.Mobi adopted FraudScore, a platform combining efficient fraud detection and user-oriented reporting.

Ekaterina Temchenko, Senior Affiliate Manager at Zorka.Mobi:

“We had our first look at the platform with our tech team. We were surprised and glad to find fraud detection analytics understandable by both marketers and tech guys. FraudScore provides segmentation by sub-affiliates, devices, geo-regions, user devices, and mobile operators – giving a complete picture of detected fraud and allowing detailed research.”



FraudScore uses ML algorithms to assign a fraud score to each conversion, indicating probability and reasons for fraud.

Ekaterina Temchenko, Senior Affiliate Manager at Zorka.Mobi:

“FraudScore explains the reasons for fraud, allowing us to negotiate with partners and provide detailed, firm answers. Thanks to FraudScore, we know how to protect our point of view.”

FraudScore.Action is used by Zorka.Mobi for CPA campaign post-analysis, ensuring clean traffic for in-app ads, maintaining reputation, and securing advertiser trust. FraudScore allows automatic detection and rejection of fraudulent conversions and sends alerts via the agency’s “Partners Portal.”

The Case

Period: September 2018 – December 2018
Advertiser: Reactive Phone Ltd
App: Fines STSI — for STSI, traffic police
App link: iTunes
GEO: Russia
Target action: first unique payment of the fine
Allowed traffic source: in-app
Platforms: iOS 9.0+

FraudScore tracked traffic daily, informed affiliates of fraud, and verified advertiser reports weekly.

Result: High index fraud reduced from 26% to 2.3% in four months.

Conclusion

“We trust FraudScore so much that we’ve integrated it into our Partners Portal. The team is always quick to answer, helpful, and open to feedback. FraudScore ensures efficient fraud detection and strengthens our reputation.”

Fraudsters evolve alongside advertising technology, but with reliable, easy-to-use tools like FraudScore, agencies and advertisers can maintain traffic quality, protect budgets, and grow creative performance. Zorka.Mobi continues to expand boundaries in mobile marketing with FraudScore as a key partner.