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Silent Signal

Silent Signal Kft.

Budapest, Hungary

Penetration TestingOffensive SecurityApplication SecurityNetwork Security
Founded 2009Serves Enterprise, Public Sector, Critical Infrastructure
Profile last updated: October 13, 2026

About

Founded in 2009, Silent Signal is a cybersecurity company based in Budapest, Hungary working in penetration testing, offensive security, application security +10 more.

Silent Signal is a Hungarian information security company offering penetration testing, vulnerability assessment, red and purple team exercises, IBM i security audits, IoT and mobile application testing, cloud configuration review, social engineering audits, and information security consulting, including compliance and business continuity support. It also develops the SIREN risk management software and gamified security awareness products, and conducts security research with publicly disclosed vulnerabilities in major vendors' products. The company reports serving clients in more than 20 countries.

Location

Budapest, Hungary

Founded

2009

Company type

Limited company

Legal name

Silent Signal Kft.

Focus areas

penetration testingethical hackingIBM i securitySIRENsecurity awarenessbusiness continuity

Languages

HUEN

Services & products

Security domains

Penetration TestingOffensive SecurityApplication SecurityNetwork SecurityIdentity & AccessCloud SecurityEndpoint SecurityOT/ICS SecurityGRC & ComplianceSecurity AwarenessIncident ResponseData ProtectionThreat Intelligence

How they deliver

Professional ServicesConsultingTrainingSoftware

Products

SIREN

GRC & Compliance software

Security Inventory and Risk Evaluation Network: in-house system for risk assessment, business impact analysis, compliance management and business continuity support.

Awareness Game

Security awareness game

Online gamified security awareness training product.

Blackhat Péter

Security awareness card game

Physical card game for user security awareness, playable as Old Maid or memory game.

Customers

EnterprisePublic SectorCritical Infrastructure

Industries served

FinanceHealthcare

Compliance & partners

Compliance frameworks

ISO 27001NIS2PCI DSSGDPR

Credentials & affiliations

Certifications

ISO 9001

ISO 27001

Awards

Legjobb Magyar Innováció

ITBN CONF-EXPO2023

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