ICSL
ICSL GmbH is a Vienna-based private vendor of the SILENTEL secure communication platform — marketed as the only NATO-approved app of its kind — selling hosted and on-premise encryption solutions to military, police, government, and enterprise clients via direct sales and a 28-country reseller network.
- Company typePrivate
- Founded2005
- HeadquartersVienna, Austria
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What ICSL does
ICSL GmbH is a Vienna-based private information and communication security vendor that develops and distributes the SILENTEL secure communication platform, marketed as the only NATO-approved secure communication application worldwide. The company is organized into two Vienna entities: ICSL GmbH, which handles hosted/as-a-Service delivery, distribution, and partnerships, and ICSL-AUSTRIA (ICSL Consulting for Information-Technology and Telecommunications GmbH), which handles on-premise installations, special projects, turnkey solutions, and government clients. Its core technology centers on proprietary crypto, security, and communication stacks built in-house over 13+ years of exclusive focus on secure communication, with the company explicitly vetting approximately 100 vendors and reselling only systems it judges as prime quality.
The product portfolio is concentrated on two deployment models of SILENTEL — SILENTEL as a Service (hosted cloud in which data is not even accessible to administrators, supporting closed usergroups for VIP communication) and SILENTEL on-Premise (self-hosted within customer infrastructure, available across multiple operating systems). Complementary offerings include security tokens, mobile device communication stabilization, anti-eavesdropping services, and jamming solutions for authorities, alongside analysis, consulting, and training services. Primary customers are military, police, authorities, and government agencies requiring NATO-grade secure voice and data; secondary customers are enterprises needing closed-usergroup VIP communication and secure external collaboration with clients and suppliers.
ICSL monetizes through a mix of prepaid recurring service agreements (rental, maintenance, software licenses, 2-year termination waiver with automatic 1-year prolongation), hardware and software product sales, professional services (analysis, consulting, training, turnkey projects), and partner-assisted leasing. Go-to-market combines direct enterprise and government sales with a channel motion via a reseller network spanning 28 countries and an online partnership application funnel. Pricing is quote-based and not publicly disclosed, and the company is privately held with no disclosed external funding, M&A activity, or public listing; Mag. Ludwig Seidl serves as Managing Director.
ICSL firmographics
Firmographics- Name
- ICSL
- Legal name
- ICSL GmbH
- Website
- https://icsl.at
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- ICSL GmbH is a Vienna-based private vendor of the SILENTEL secure communication platform — marketed as the only NATO-approved app of its kind — selling hosted and on-premise encryption solutions to military, police, government, and enterprise clients via direct sales and a 28-country reseller network.
- Ownership category
- akta.pro rank
ICSL industry classification
Industry- Product category
- Secure Communications Software
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Email Data Loss Prevention & Encryption (HDADAKAD)
- akta.pro secondary industries
- Authentication (MFA/Passwordless/Biometrics) Platforms (BPAMAEAE), Endpoint Application Control & Allowlisting (HDADAEAI)
Keywords
Where ICSL is headquartered
LocationHeadquarters
- HQ city
- Vienna
- HQ country
- Austria
- HQ region
- Europe
Offices2 records
Markets served
ICSL business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Service Agreements (Recurring): Service agreements including rental of products, maintenance contracts, and software license agreements. Fees are paid one year in advance. Contracts for continuing obligations are basically unlimited with 90-day termination notice.
- Product Sales: Sale of hardware and software products including secure communication systems and security tokens.
- Professional Services: Analysis, consulting and trainings complete the business segment communication and data security. Also includes individual and special solutions/projects and turnkey solutions.
- Leasing: ICSL offers leasing options for particular products in cooperation with a leasing partner.
Go-to-market motion2 records
Distribution channels4 records
Marketing channels3 records
ICSL product offering
Product offeringCore offering
ICSL provides NATO-approved secure communication solutions through its proprietary SILENTEL platform, available in two deployment models: SILENTEL as a Service (cloud-hosted) and SILENTEL on-Premise. The platform delivers encrypted voice, data, and messaging across multiple operating systems for governments, military, police, and enterprise clients. ICSL complements the platform with security tokens, mobile device communication stabilization, anti-eavesdropping and jamming solutions, and professional analysis, consulting, and training services.
Product overview
ICSL offers a focused portfolio centered on the SILENTEL secure communication solution, available in two deployment models: SILENTEL as a Service (hosted cloud) and SILENTEL on-Premise (self-hosted). Both products are marketed as the only NATO-approved secure communication applications worldwide, designed for voice, data encryption, and secure communications among authorities, VIPs, and enterprise clients. ICSL also provides complementary services including security tokens, mobile device communication stabilization, data security solutions, jamming solutions for authorities, and counter-eavesdropping services including analysis, consulting, and training.
Differentiator
Problem solved
Functional benefit
Brands
- SILENTEL: NATO-approved secure communication solution available for different OS platforms. Offered as both hosted (as a Service) and on-premise deployment options.
Products and services
- SILENTEL as a Service
Companies that use ICSL
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles3 records
ICSL technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
ICSL partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Reseller Network PartnerscoreICSL maintains a reseller network spanning 28 countries that offers new technology partners the possibility of a quick market test and solution roll-outs. The network provides distribution, training, maintenance and support for different producers of high-tech security-products.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
ICSL competitors and assessment
Company assessmentMarket position
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
ICSL social profiles
Digital presenceICSL compliance and trust
Trust signalCompliance2 records
ICSL financial estimates
Financial estimateRevenue estimate
Valuation estimate
ICSL leadership team
Management profileNumber of profiles
Profiles1 record
ICSL funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ICSL 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 ICSL
What does ICSL do?
ICSL provides NATO-approved secure communication solutions through its proprietary SILENTEL platform, available in two deployment models: SILENTEL as a Service (cloud-hosted) and SILENTEL on-Premise. The platform delivers encrypted voice, data, and messaging across multiple operating systems for governments, military, police, and enterprise clients. ICSL complements the platform with security tokens, mobile device communication stabilization, anti-eavesdropping and jamming solutions, and professional analysis, consulting, and training services.
Is ICSL a public or private company?
ICSL is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ICSL founded?
ICSL was founded in 2005. It employs 11 to 50 people.
Where is ICSL based?
ICSL is headquartered in Vienna, Austria, in the Europe region.
How does ICSL make money?
Four revenue lines are on record. Service Agreements (Recurring) is the primary driver. The others are product Sales, professional Services and leasing.
Does ICSL have an API?
No public API is recorded for ICSL.
What industry is ICSL in?
ICSL's product category is Secure Communications Software. Its primary akta.pro industry code is HDADAKAD, Email Data Loss Prevention & Encryption, with a secondary code of BPAMAEAE, Authentication (MFA/Passwordless/Biometrics) Platforms. Its NAICS code is 5182 and its SIC code is 7372.