STI
STI Security Training International GmbH is a German aviation security firm that develops proprietary X-ray image interpretation training software (OTS, ProDetect), operates passenger and cargo screening at German airports, and provides EU-validated compliance services to airlines and regulators globally.
- Company typePrivate
- Founded2001
- HeadquartersFlörsheim Am Main, Germany
- Headcount101–250
- GTM typeB2B
- OfferingServices
What STI does
STI Security Training International GmbH is a privately held German aviation security services and training company founded in 2001 and headquartered in Flörsheim am Main. The company operates three integrated business lines: (1) proprietary training software — OTS (Operator Training System) for 2D X-ray image interpretation and ProDetect for 3D CT-based screener training, co-developed with Battelle; (2) an e-learning and instructor-led training platform delivered globally through the NEOS online shop and on-site classroom programs; and (3) operational security services including passenger screening at five German regional airports (Frankfurt-Hahn, Paderborn, Friedrichshafen, Lübeck, Sylt) and air cargo inspections at four LBA-approved centers. STI is also a self-approved Regulated Agent (RegB) and certified EU Validation Examiner for ACC3/RA3/KC3 validations, enabling it to serve airlines, airports, shippers, and regulators across the air cargo compliance value chain.
The company's revenue model combines recurring software licensing (OTS, ProDetect, NEOS subscriptions), professional services (instructor-led training, consulting, EU validation), managed services (airport passenger and cargo screening labor), and hardware/equipment sales (ECAC test pieces, PSA Kits, training posters). Go-to-market is bifurcated: enterprise field sales with custom multi-year contracts for airports, aviation authorities, and carriers globally, paired with a self-serve e-commerce channel via NEOS. Pricing is opaque and quote-based across all tiers. Customer concentration is meaningful on the services side — German regional airport screening accounts for the majority of headcount and is operationally concentrated — while the software and training business serves customers in more than 70 countries, providing geographic diversification. STI is founder/management-owned with no disclosed external funding, led by Managing Directors Axel Stefan and Holger Heldmann.
STI firmographics
Firmographics- Name
- STI
- Legal name
- STI Security Training International GmbH
- Website
- https://sti-training.com
- Company type
- Private
- Founded year
- 2001
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- STI Security Training International GmbH is a German aviation security firm that develops proprietary X-ray image interpretation training software (OTS, ProDetect), operates passenger and cargo screening at German airports, and provides EU-validated compliance services to airlines and regulators globally.
- Ownership category
- akta.pro rank
STI industry classification
Industry- Product category
- Aviation Security Training
- NAICS
- Flight Training (611512), Security Guards and Patrol Services (561612), Investigation, Guard, and Armored Car Services (56161)
- SIC
- Services-Detective, Guard & Armored Car Services (7381), Services-Educational Services (8200)
- akta.pro primary industry
- Aviation Security (AVSEC) Training (BPAKAOAM)
- akta.pro secondary industries
- Passenger & Terminal Screening Services (BPAKAMAA), Hold Baggage & Cargo Screening Services (BPAKAMAB), Defense & Security (EDABALAH)
Keywords
Where STI is headquartered
LocationHeadquarters
- HQ city
- Flörsheim Am Main
- HQ country
- Germany
- HQ region
- Europe
Offices6 records
Markets served
STI business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Training Software Licenses: Revenue from OTS and ProDetect software licenses for X-ray image interpretation training
- E-Learning (NEOS): Online training courses sold through NEOS shop for web-based training modules (WBT courses)
- Instructor-Led Training: On-site classroom training for aviation security using modular training systems
- Security Screening Services: Passenger screening at German airports and air cargo inspections at control centers
- Consulting Services: Security consulting for supply chain security, airports, and EU validation services
- Equipment Sales: Sale of security equipment including ECAC Standard Test Pieces, PSA Kits, and security culture posters
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Quote-based/ custom | Multi-year contract | Custom enterprise pricing for airports and security organizations |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels3 records
STI product offering
Product offeringCore offering
STI Security Training International GmbH develops and sells proprietary aviation security training software (OTS for 2D and ProDetect for 3D X-ray image interpretation) and delivers the NEOS online e-learning platform. The company also operates passenger screening at five German airports, performs air cargo inspections at four LBA-approved inspection centers, provides instructor-led classroom training, and offers security consulting including EU ACC3/RA3/KC3 validations. Products and services are sold to airports, airlines, aviation security authorities, known shippers, and regulated agents across more than 70 countries.
Product overview
STI offers a comprehensive portfolio of aviation security training solutions comprising three core products: OTS (Operator Training System) for 2D X-ray image interpretation training, ProDetect Security Screener Training for 3D X-ray/CT image interpretation developed jointly with Battelle, and NEOS as an online/e-learning platform. The company also provides instructor-led classroom training, security screening services at German airports, consulting for supply chain security, and specialized equipment including test pieces and personal protective equipment. The products are designed to work together with ProDetect linking to OTS Management for detailed evaluations.
Differentiator
Problem solved
Functional benefit
Brands
- NEOS: Online training system developed by STI that can be carried out anywhere and anytime, allowing users to determine their own pace of learning.
- ProDetect®
- OTS
Products and services
- OTS (Operator Training System) Proprietary training software for X-ray image interpretation used by aviation security screeners, industry, and critical infrastructure operators. Includes OTS Management module for detailed graphical and tabular evaluations of screener training progress and performance.
- ProDetect Security Screener Training 3D X-ray image interpretation training system developed jointly with Battelle for aviation security screeners. Uses computed tomography (CT) imaging with an extensive 3D image library of real threats and realistic user interface mapping for Analogic ConneCT, Leidos ClearScan, and Smiths Detection CTiX, XCT, and CTX9800.
- NEOS Online Training System STI's online training system that can be carried out anywhere and anytime, allowing users to determine their own pace of learning. Sells web-based training (WBT) courses through the NEOS shop on a self-service basis.
- Instructor-led Training for Aviation Security On-site classroom training delivered by trainers with extensive knowledge and experience, using a modular system for aviation security training that includes work-related topics.
- Passenger Screening Services Outsourced passenger screening operations provided to German airports, deployed as qualified personnel at the airport. STI operates passenger screening at five German airports (Frankfurt-Hahn, Paderborn, Friedrichshafen, Lübeck, Sylt).
- Air Cargo Inspection Services Professional X-ray screening and inspection of air cargo at a nationwide network of four LBA-approved air cargo inspection centres, plus mobile freight control. Services include secure supply chain operations for Reglementierte Beauftragte (RegB) and Bekannte Versender (Known Shippers).
- EU Validation and Security Consulting Services Security consulting and EU validation services for airports, EU air carriers, and supply chain operators. Includes ACC3, RA3, and KC3 validations in third countries, security audits, and security program development, delivered by IATA CEIV-trained EU validation reviewers certified by the Luftfahrt-Bundesamt (LBA).
- ECAC Standard Test Piece (STP) Test equipment for regular verification of the accuracy of X-ray inspection systems, containing samples of various materials of different densities.
- PSA Kit European certified personal protective equipment kit for aviation security personnel, developed by STI in collaboration with ICA. Designed for one person for two operational days.
- Security Culture and Awareness Poster Set Set of 5 posters with different motifs measuring 60x40cm, suitable for posting in social rooms, corridors, and work areas to promote security culture and awareness.
Quantifiable outcome
- Screener ability to correctly assess threats improved through regular genuine training with fast and reliable detection of dangerous objects
Companies that use STI
Customer profileNamed customers5 records
Segments5 records
Ideal customer profiles4 records
STI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability2 records
Feature4 records
STI partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core and minor.
- BattellecoreJoint development partnership with Battelle for ProDetect 3D security screener training system. Battelle contributes behavioral research platform and X-ray technology expertise; STI contributes education and training expertise. ProDetect is based on Battelle's 20+ years of experience providing aviation security intelligence to U.S. agencies including DHS, TSA, and FAA.
- ICA (International Civil Aviation)minorICA collaborates with STI to provide European certified, high-quality Personal Protective Equipment (PSA Kit) for aviation security personnel. The PSA Kit is designed for one person for two operational days.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
STI competitors and assessment
Company assessmentDirect peers
- Rapiscan Systems (OSI Systems): Manufactures aviation security screening equipment and integrates checkpoint solutions for airports globally. Directly comparable to STI as a peer in the aviation screening value chain, though focused on hardware versus STI's training-software emphasis.
- Smiths Detection: Global manufacturer of aviation X-ray and CT screening equipment (CTiX, XCT, CTX9800), referenced in STI's ProDetect UI mappings. Compares as a direct peer because it serves the same airports and screeners with adjacent products in the same regulatory ecosystem.
- ICTS Europe: Aviation security services and consulting company operating across European airports, providing screening personnel and training. Comparable to STI as a direct peer in outsourced aviation security operations and personnel training.
- Leidos: Provides aviation security detection solutions including ClearScan, listed among the OEM equipment STI's ProDetect system integrates with. A directly comparable peer operating in airport security screening technology and services.
- Nuctech Company: Supplies aviation and cargo X-ray inspection equipment globally. Comparable as a peer in the aviation security screening equipment market, though larger and broader than STI's training-software focus.
- L3Harris Technologies (ClearScan): Supplies aviation security screening platforms including computed tomography systems referenced by STI for screener training. A direct competitor in the aviation security detection market that touches the same airport customers and regulatory standards.
Broad incumbents
- Securitas AB: One of the world's largest security services providers with a dedicated aviation security division offering screening, training, and managed services at airports. A broad incumbent peer overlapping with STI on airport screening services but at much larger scale across many verticals.
- Allied Universal: Global security services company offering aviation security workforce and screening services, formed through G4S acquisition. A broad incumbent peer competing with STI for airport screening contracts but operating across the full security services spectrum.
Others
- IATA (International Air Transport Association): Industry association providing aviation security training, certification programs (including CEIV referenced by STI staff), and standards. An adjacent ecosystem participant rather than a direct competitor, but comparable for benchmarking training and certification scope in aviation security.
- Battelle Memorial Institute: Joint development partner with STI on ProDetect 3D X-ray training system and a US aviation security intelligence provider to DHS, TSA, and FAA. Comparable as a partner/thematic peer in aviation security R&D and behavioral research, though their primary offering is research services rather than commercial training.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
STI social profiles
Digital presenceSTI compliance and trust
Trust signalCompliance2 records
STI financial estimates
Financial estimateRevenue estimate
Valuation estimate
STI leadership team
Management profileNumber of profiles
Profiles4 records
STI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
STI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about STI
What does STI do?
STI Security Training International GmbH develops and sells proprietary aviation security training software (OTS for 2D and ProDetect for 3D X-ray image interpretation) and delivers the NEOS online e-learning platform. The company also operates passenger screening at five German airports, performs air cargo inspections at four LBA-approved inspection centers, provides instructor-led classroom training, and offers security consulting including EU ACC3/RA3/KC3 validations. Products and services are sold to airports, airlines, aviation security authorities, known shippers, and regulated agents across more than 70 countries.
Is STI a public or private company?
STI is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was STI founded?
STI was founded in 2001. It employs 101 to 250 people.
Where is STI based?
STI is headquartered in Flörsheim Am Main, Germany, in the Europe region.
How does STI make money?
Six revenue lines are on record. Training Software Licenses are the primary driver. The others are E-Learning (NEOS), instructor-Led Training, security Screening Services, consulting Services and equipment Sales.
Who are STI's main competitors?
Direct peers on record are Rapiscan Systems (OSI Systems), Smiths Detection, ICTS Europe, Leidos, Nuctech Company and L3Harris Technologies (ClearScan). Broad incumbents are Securitas AB and Allied Universal. Others are IATA (International Air Transport Association) and Battelle Memorial Institute.
Does STI have an API?
No public API is recorded for STI.
What industry is STI in?
STI's product category is Aviation Security Training. Its primary akta.pro industry code is BPAKAOAM, Aviation Security (AVSEC) Training, with a secondary code of BPAKAMAA, Passenger & Terminal Screening Services. Its NAICS code is 611512 and its SIC code is 7381.