Entersekt
A South African-founded, Atlanta-co-headquartered vendor of transaction-bound push authentication and 3-D Secure payment authentication for banks and financial institutions.
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Entersekt provides push-based mobile authentication and transaction-signing technology built for banks and other financial institutions, turning a customer’s smartphone into a secure authentication device that replaces SMS one-time-passcodes and static passwords for both login and payment approval. Its platform ties authentication decisions to transaction context — device binding, risk signals, what’s actually being approved — so a bank can step up or adapt authentication based on the transaction itself rather than treating every login the same way.
With its 2021 acquisition of Modirum’s 3-D Secure business, Entersekt extended from banking-login authentication into card-not-present payment authentication, positioning it across both digital banking security and payment-fraud prevention flows for card issuers and merchants.
Founded in Stellenbosch, South Africa in 2008 and now co-headquartered in Atlanta, Georgia, Entersekt has grown from a South African fintech-security startup into a global vendor with roughly 250 employees serving banks across North America, Europe, and Africa, backed by growth-equity investor Accel-KKR and with documented bank partnerships including Nedbank and Cellulant.
Innovation Matrix Assessment
Expansion from core push-authentication into 3-D Secure card-not-present payment authentication via the 2021 Modirum acquisition is a meaningful, verifiable product-line expansion rather than incremental UI updates.
Roughly 250 employees, multi-continent operations across North America, Europe, and Africa, and growth-equity backing from Accel-KKR reflect a solid execution track record for a mid-market fintech-security vendor with 17+ years operating.
Continued investment (an additional undisclosed funding round secured in October 2025) and named bank partnerships reported in trade press (Nedbank, Cellulant) point to sustained rather than stalled growth.
Transaction-bound, out-of-band push authentication was a genuine step-change over SMS OTP when Entersekt introduced it, but it is now a fairly established approach among banking-authentication vendors rather than a novel one today.
Named, independently documented bank customers (Nedbank) and partnership case studies provide real evidence of production deployment, though no independent breach-prevention statistics or third-party audit results were found.
Banking-fraud pressure and strong customer authentication requirements globally keep transaction-bound mobile authentication highly relevant, especially as SMS OTP is increasingly regarded as an insecure factor.
Why CISOs Should Care
For banks and financial institutions under pressure to move beyond SMS OTP for both login and payment authorization, Entersekt offers transaction-bound push authentication with named, verifiable bank deployments such as Nedbank rather than a purely theoretical product.
What Makes It Different
Tying authentication decisions to actual transaction context and risk, not just identity, plus the 2021 Modirum acquisition extending into card-not-present 3-D Secure, gives Entersekt reach across both banking-login and payment-fraud authentication flows.
The Matrix Verdict
62/100 — INCREMENTAL INNOVATOR
A mature, financially-backed authentication vendor with real bank customers and a coherent expansion into payment authentication; solid rather than groundbreaking, operating in a banking-authentication category that has matured significantly since Entersekt's founding.
Editorial Note: Claims vs. Verified Findings
The Nedbank partnership and Modirum acquisition are independently documented via press releases and trade coverage. Specific fraud-reduction percentages and broader customer-count figures referenced in company materials are vendor-stated and were not independently verified in available sources.
Sources
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