IT, payment and fraud prevention for the travel industry
Since 1994 we have been building the technology behind flight bookings in Frankfurt: GDS, NDC, low-cost and charter content through one connection, PCI DSS Level 1 payments and a fraud check before the ticket is issued.Since 1994 from Frankfurt: every flight source through one connection, paid securely and checked for fraud.
Audited and certified
Where the content comes from and where it is sold
Ypsilon aggregates content from many sources and delivers it wherever you sell. Tap a source or a channel.
Simplified illustration. Background image: AI-generated illustration.
Our 15 products
Choose your type of business to see which products fit. Each product runs on its own or together with the others.
Who is it for?
Card data that never touches your servers
Ypsilon’s “Norris” token proxy swaps card numbers for tokens. Your systems only ever store tokens, and payments still go through.
Simplified illustration. The card number is a public test number; the token is made up.
- Payment service connector: direct links to acquirers such as American Express, Elavon, Nexi and BS Card Service
- PSD2 / SCA via iframe or API: strong customer authentication without a rebuild
- Virtual credit cards from Airplus, Amadeus, American Express, eNett, WEX, Apiso and Pax2pay
- Travel protocols: http/https, STADIS/TOMA, REST, XML, SOAP, often with minimal changes to your existing system
- End to end: booking, fraud check, reconciliation, payment and post-booking actions in the GDS/CRS
Ypsilon.Net AG
A listed payment service connector, PCI DSS Level 1, PSD2/SCA compliant and ISO 27001 certified.
The audit and certification of code, processes and all system components in the scope of PCI DSS took twelve months. The complete cardholder environment, the part of the Ypsilon network that processes and stores cardholder data or sensitive authentication data, was audited and verified: firewalls, switches, routers, wireless access points and other network and security appliances, as well as web, application, database, authentication, mail, proxy, time (NTP) and name servers (DNS). As a result, Ypsilon also offers third-party companies secure storage of card data and card neutralisation through tokens.
The travel industry as a whole has been heavily targeted by credit card fraud and it is our responsibility as a leading IT solution provider to ensure the highest degree of payment security for the protection of our customers. They are entitled to that and it is essential for any IT provider that stores, processes or forwards credit card details to ensure such protection; after all the consequences of card fraud can be extremely costly to all involved. As in many areas, Ypsilon is now also a first mover in terms of data security certification.
We have optimized all relevant environments with great care in order to comply with the highest security level of the industry like banks, financial institutes and other huge corporations do that process extremely sensitive data. Thus, customers should always differentiate which class of a PCI DSS certification an IT provider holds.
Airlines, tour operators, portals and airports
Travel companies, portals & airlines
Airports
Logos as shown on the current yn.de website. Trademarks belong to their owners.
Fraud checks before the ticket is issued
FraudClear combines machine learning with direct access to reservation and loyalty systems. Try it on a sample booking.
One-way · 2 adults · Business · €1,840.00 · credit card
Which signals does this booking show? Tap to switch on or off:
Illustration with a fictional booking and simplified weights. This is not the real FraudClear model. Each company defines its own rules, thresholds and actions.
“We are very satisfied with our migration to a tool adapted to the tourism business and more specifically to air transport industry.”
“Our cooperation has been very efficient and fruitful with them from day one.”
Quotes: FraudClear product page on yn.de (shortened). Figures: yn.de news of 12 August 2026.
About Ypsilon.Net AG
More than 30 years of experience in the travel industry
Established in 1994, Ypsilon.Net AG is a global provider of internet travel technology for airlines, consolidators, travel portals and travel agencies.
Thousands of customers worldwide use our applications, from fare management, air, hotel and car booking engines, cache content, customer profiles, ticketing and mid office to payment, PCI DSS and fraud prevention. Ypsilon delivers the content as well: all major GDS, low-cost carriers, charters and NDC airlines.
Offering travel IT and payment solutions side by side makes us a hybrid company and allows fully aggregated solutions for the travel industry.
Milestones
- 1994Founded in Frankfurt am Main
- 2013Flight engine passes €1 billion booking volume and 5 million segments
- 2018ISO 27001 certification · fraud team expands
- 2021PSD2 directive implemented early
- 2024Loyalty fraud prevention added to FraudClear
The Ypsilon Group
News
Frequently asked questions
Talk to our sales team
- Ypsilon.Net AG
Vilbeler Landstraße 203
60388 Frankfurt am Main, Germany - +49 6109 5050
- info@ypsilon.net
- Mon–Fri, 9 a.m. – 6 p.m. (CET)
- Ypsilon UK Ltd · Burgess Hill, West Sussex · +44 1444 635012
- Order directly – order form
- Customer login