cybersecdirectory

All companies

Every cybersecurity vendor and service firm on the list. Tick the filters to build a shortlist, then open a profile to see who owns the company and what it does. You can also browse by category or country, or see recent deals.

Results

860 companiesShowing 51 to 100
CompanyCategoryBased inFoundedOwnership
Aristi

CHECK and CREST-accredited Birmingham-based cyber security consultancy with over 15 years of experience delivering penetration testing, red teaming, and OT security assessments for government and private sector clients.

Penetration testingBirmingham, United Kingdom2008Owned by Limerston Capital
Armis

Armis provides cyber exposure management and security for connected devices and operational technology.

IoT, embedded and product securityUnited StatesPart of ServiceNow
Armor

Provides cloud security, compliance and managed detection and response services to regulated industries.

Managed detection and responsePlano, United States2009Private
ARPSyndicate

Builds internet-scale intelligence datasets and security products for vulnerability, subdomain, and physical reconnaissance.

Attack surface managementNew Delhi, IndiaPrivate
Arsen Security

Arsen provides a platform for cybersecurity awareness and social engineering simulation.

Security awareness and human riskParis, France2021Private
Artemis Security

Artemis Security provides an AI-native security operations platform that detects, investigates and responds to cyber attacks.

SIEMNew York, United StatesPrivate
Article 14 Ready

Article 14 Ready provides a browser-based working packet for manufacturers that fall under the EU Cyber Resilience Act.

GRC and compliance automationMannheim, Germany2020Private
Asimily

Asimily provides a platform to discover, assess, and mitigate risks for IoT, OT, and IoMT devices.

IoT, embedded and product securitySunnyvale, United StatesPrivate
Assured Security Consultants

Gothenburg consultancy testing ECUs, vehicle buses, telematics and OTA pipelines, and advising on R155 and ISO 21434.

Penetration testingGothenburg, Sweden2015Private
asvin

Software and services for cyber risk analysis, secure software updates and UNECE R155 and R156 compliance.

Automotive cybersecurityStuttgart, Germany2018Private
AT&T Cybersecurity

AT&T Cybersecurity provides network security services to businesses of all sizes.

SASE and SSESan Mateo, United States2007Owned by WillJam Ventures
Athena Agentic

Athena Agentic provides a unified cyber operations platform that automates detection, response, and hardening.

Agentic SOC toolsDallas, United StatesPrivate
AtlasCyber

Provides agentic threat intelligence and validation for critical infrastructure security teams.

Threat intelligenceMerrimack, United StatesPrivate
Atredis Partners

Employee-owned research firm testing embedded systems, including vehicle infotainment, telematics units and CAN networks.

Penetration testingUnited StatesPrivate
AttackIQ

AttackIQ provides a platform for continuous threat exposure management and adversarial exposure validation.

Breach and attack simulationLos Altos, United States2014Private
Auth0

Auth0 provides authentication and authorization services for applications and AI agents.

Customer identityBellevue, United States2013Part of Okta
Authentik Security

Authentik Security provides a self-hosted open source identity provider for authentication and access management.

Identity and access managementPhiladelphia, United States2020Private
AUTOCRYPT

Korean supplier of in-vehicle security software, V2X and Plug&Charge PKI, security testing tools and R155 consulting.

Automotive cybersecuritySeoul, South Korea2019Public, 331740
Automiq

Automiq is an automation strategy and transformation partner.

Security consulting and vCISOLondon, United Kingdom2025Private
AutoSifu

Indian consultancy helping vehicle makers gain UN R155, R156 and AIS-189 approval, with TARA tools and penetration testing.

Automotive cybersecurityJaipur, IndiaPrivate
Auxilium Cyber Security

Ettlingen consultancy pentesting vehicles, ADAS, gateways, infotainment and on-board chargers, plus R155 CSMS consulting.

Automotive cybersecurityEttlingen, Germany2015Private
Axoflow

Axoflow provides an autonomous security data layer that curates and manages security data for SecOps.

Security data pipelinesBudapest, Hungary2023Private
Axonius

Asset intelligence platform that builds one inventory of every asset from connected IT and security tools to find coverage gaps and prioritise exposures.

Attack surface managementNew York, United StatesPrivate
Babel Street

Risk intelligence platform that gathers multilingual online data and uses AI agents for threat, identity and vendor risk investigations by government and enterprise.

Threat intelligenceReston, United StatesPrivate
BackBox

BackBox provides a cyber resilience platform for automating network security, compliance, and lifecycle management.

Backup and cyber recoveryAddison, United States2009Private
BARR Advisory

BARR Advisory helps organisations establish, manage, and audit cybersecurity and compliance programmes.

Compliance audits (SOC 2, ISO 27001)Kansas City, United StatesPrivate
Barracuda Networks

Barracuda Networks provides cybersecurity solutions for email, networks, applications, and data.

Email securityCampbell, United States2003Owned by KKR
BCIT

BCIT is a cybersecurity and compliance consulting firm and training organisation based in France.

Security consulting and vCISOPranzac, France2022Private
BeforeCrypt

BeforeCrypt is a ransomware recovery and incident response provider.

Incident responsePaphos, Cyprus2021Private
Beyond Identity

Beyond Identity provides identity security software that eliminates passwords and verifies users and devices.

MFA and passwordless authenticationNew York, United StatesPrivate
BigID

BigID provides a data intelligence platform for discovering, classifying, and governing enterprise data and AI.

Data security posture managementNew York City, Israel2016Private
Binary Defense

Binary Defense provides managed detection and response services and an AI-powered security platform.

Managed detection and responseStow, United StatesPrivate
Bindplane

OpenTelemetry pipeline that collects, reduces, masks and routes logs and other telemetry to SIEM, storage and observability tools.

Security data pipelinesUnited StatesPrivate
BIO-key International

BIO-key provides identity and access management solutions with biometric authentication for enterprises and organisations.

Identity and access managementHolmdel, United StatesPublic, BKYI
BioCatch

BioCatch analyses user behaviour to detect and prevent fraud and financial crime for banks.

Fraud and payment fraud preventionIsrael2010Owned by Permira
Bishop Fox

Tempe, Arizona-headquartered offensive security firm and Black Hat / DEF CON regulars, makers of the Cosmos continuous attack surface management platform.

Penetration testingTempe, United States2005Private
Bitdefender

Bitdefender provides cybersecurity software and services for consumers, businesses, and governments.

Endpoint protection and antivirusBucharest, Romania2001Private
BitScore Cybertech LLP

BitScore Cybertech LLP is a delivery partner for Bitsight security ratings in India.

Third-party risk and security ratingsAhmedabad, India2016Private
Bitsight

Bitsight provides a cyber risk intelligence platform.

Third-party risk and security ratingsBack Bay, United States2011Private
Bitwarden

Bitwarden provides open source password management and secrets management for individuals and organisations.

Password managersSanta Barbara, United States2016Private
Black Duck

Black Duck provides application security testing tools for software development.

Application security testingBurlington, Massachusetts, United States2002Owned by Clearlake Capital and Francisco Partners
Black Hills Information Security

Community-driven penetration testing firm known for free security education, open-source tools, Wild West Hackin' Fest, and practical offensive security services.

Penetration testingSpearfish, United States2008Private
Black Kite

Black Kite provides an AI-native third-party cyber risk management platform for monitoring and assessing vendor risks.

Third-party risk and security ratingsBoston, United States2016Private
BlackBerry Certicom

BlackBerry subsidiary providing cryptographic key management, managed PKI and code signing for vehicle supply chains and in-car networks.

Encryption and key managementMississauga, Canada1985Owned by BlackBerry
Blast Security

Blast Security provides a preemptive cloud defense platform.

Cloud security (CNAPP and CSPM)Tel Aviv, Israel2024Private
Block Harbor Cybersecurity

Detroit firm offering a vehicle security engineering platform alongside automotive penetration testing and defensive security services.

Automotive cybersecurityDetroit, United StatesPrivate
BlueCat Networks

Policy driven DNS security and threat protection through BlueCat Edge, alongside DNS, DHCP and IP address management and network observability software.

DNS securityToronto, CanadaPrivate
BlueRock Security

BlueRock provides observability and guardrails for AI agents in production.

AI and LLM securitySan Mateo, United States2017Private
Blumira

Blumira provides a security operations platform for IT teams to detect and respond to threats.

SIEMAnn Arbor, United StatesPrivate
Bondgate IT

Bondgate IT is a managed service provider founded in 1998.

Managed security servicesDarlington, United Kingdom1998Private