Gartner Research

When Knowledge-Based Authentication Fails, and What You Can Do About It

Published: 25 September 2012

Summary

Verifying identities using knowledge-based authentication based on public data often results in high failure rates and customer inconvenience, and sometimes does not stop the fraud. Put complementary layered solutions in place.

Included In Full Research

  • Impacts
  • U.S. Gartner clients report an average of 10% to 15% failure rate on knowledge-based authentication (KBA) that relies on users answering personal questions based on public data, such as credit bureau or driver's license records — driving up customer service costs and customer dissatisfaction.
  • Most KBA failures are experienced by legitimate users who cannot answer the questions because they cannot remember the answers, or because the public records are lacking or incorrect
  • Criminals have circumvented KBA used on high-risk transactions by stealing or culling information from public aggregators or social networks

Analyst(s): Avivah Litan

Access Research

Already a Gartner client?

Just stopping by?

To view this research and much more, become a client.

Speak with a Gartner specialist to learn how you can access peer and practitioner research backed by proprietary data, insights, advice and tools to help you achieve stronger performance.

By clicking the "Continue" button, you are agreeing to the Gartner Terms of Use and Privacy Policy.

Gartner research: Trusted insight for executives and their teams

What is Gartner research?

Gartner research, which includes in-depth proprietary studies, peer and industry best practices, trend analysis and quantitative modeling, enables us to offer innovative approaches that can help you drive stronger, more sustainable business performance.

Gartner research is unique, thanks to:

Independence and objectivity

Our independence as a research firm enables our experts to provide unbiased advice you can trust.

Actionable insights

Not only is Gartner research unbiased, it also contains key take-aways and recommendations for impactful next steps.

Proprietary methodologies

Our research practices and procedures distill large volumes of data into clear, precise recommendations.

Gartner research is just one of our many offerings.

We provide actionable, objective insight to help organizations make smarter, faster decisions to stay ahead of disruption and accelerate growth.

Tap into our experts

We offer one-on-one guidance tailored to your mission-critical priorities.

Pick the right tools and providers

We work with you to select the best-fit providers and tools, so you avoid the costly repercussions of a poor decision.

Create a network

Connect directly with peers to discuss common issues and initiatives and accelerate, validate and solidify your strategy.

Experience Information Technology conferences

Join your peers for the unveiling of the latest insights at Gartner conferences.

©2022 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.