Resources
Ebooks, Webinars, and More
Practical, plain-language guides on survey fraud, technical signals, data quality, global audience reach, and vendor transparency. Written for sample buyers and insights teams, free to download.
Free Ebook
20 Common Technical Fraud Signals
A field guide for sample buyers
We break the black box of "technical signals" into five types of fraud signals, then walk through the 20 signals inside them, covering what each detects, where each is ambiguous, and how to tell a vendor that understands its own tooling from one reading off a feature list.
Free Ebook
Rep Data's Global Audience Reach
The Rep Data panel book, June 2026 edition
The reach, depth, and quality of the respondents Rep Data delivers across 57 countries, backed by the #1 survey fraud defense in market research. Every number in the book is sourced directly from live fielding data, not a rate card.
Free Ebook
Answers to ESOMAR's 37 Questions
The Rep Data transparency and quality document
Every question a sample buyer should ask, answered in full. Who we are, where our sample comes from, how every respondent is validated at the point of survey entry, and how your data is protected.
Free Ebook
From Access to Trust
What twenty years of online sample teaches us about trustworthy research, by Kurt Knapton
Kurt Knapton, former CEO of e-Rewards and Research Now and a Rep Data board member, looks back on two decades of online sample evolution. From double opt-in panels and river sampling to marketplaces, fraud prevention, and AI-driven quality approaches, the guide traces how the industry's scarce resource shifted from respondent access to respondent quality.
Free Slide Deck
ESOMAR 2026 Research Brief and Slide Deck
Detect. Trace. Learn. Presented at ESOMAR Congress 2026
Start with the research brief from our ESOMAR Congress 2026 session with Dr. Julia Mittermayr and Steven Snell, PhD, then explore the full slide deck. Together, they put eight fraud signals to the test on 11,778 real respondents and show why poor quality data rarely follows a single pattern.
On Demand Webinar
2025 State of Survey Fraud
What we have learned from more than 4 billion attempted responses
Our most comprehensive analysis yet. We examined data from over 4 billion survey attempts to quantify the scale of fraud across panels, marketplaces, and direct sources. The findings reveal how fraud patterns have evolved and what research teams need to do differently to protect their data.
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On Demand Webinar
Analyzing Survey Fraud Across 6 Sources
3,600 respondents from 6 different sources put to the test
We ran a controlled study sourcing 3,600 respondents from 6 different sample providers and marketplaces. Every respondent was screened by pre-survey fraud prevention and scored by in-survey data cleaning. The results show significant quality variation between sources and highlight why multi-layer quality controls are essential.
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On Demand Webinar
The Fraud Mirage
31% of 1,928 responses flagged as fraudulent from sample marketplaces
Our original research that put the problem on the map. We analyzed 1,928 responses sourced through sample marketplaces and found that nearly one in three were fraudulent. This study demonstrates the gap between what buyers think they are getting and the reality of marketplace sample quality.
Watch the webinarWant the checks behind the guides?
Everything we write about comes from running quality assurance on billions of survey attempts. See how it works on your own data.