GSI

The company operates a B2B software and services model focused on digital advertising fraud detection. It provides a centralised platform that collects click, impression and log-level data from customers’ advertising systems, applies detection algorithms and maintains a blacklist/anonymisation IP database. Output includes dashboards, CSV exports, blacklists and detailed event documentation that can be used operationally or in legal proceedings.

Revenue is generated primarily from recurring subscriptions to its API, log-analysis and managed analysis products, all structured around fixed monthly request quotas and minimum 12‑month terms. Additional value is created through managed analysis, where the vendor runs the workflows on behalf of clients, and through professional services such as custom integrations, training and support. This combination positions the company as a verification and fraud-detection partner within the adtech ecosystem rather than as a media seller or buyer.

GSI One is a Germany-based anti-ad-fraud platform operated by GP One GmbH. It ingests impression, click and log-level data from digital advertising systems to detect invalid traffic and affiliate fraud, using one-way, two-way and three-way tracking configurations and a maintained IP anonymisation database. The platform outputs fraud scores, blacklists, reports and legal-grade documentation that can be used in disputes or court cases.

The company sells subscription products and managed analysis services to advertisers, agencies, publishers, e‑commerce operators and adtech platforms (DSPs, SSPs, adservers). Customers integrate via API or log uploads and pay recurring fees based on monthly request volumes, with minimum contract terms of 12 months and optional professional services for custom integrations and support.