In 2025 alone, cybersecurity startups raised more funding than in the past three years, with investors pouring roughly $18 billion into security and privacy companies. This surge in capital reflects not just interest, but confidence that security solutions are not only essential but can scale and support resilient digital ecosystems.
For job seekers, this momentum matters. Cybersecurity isn’t just one of the fastest-growing areas in tech, it’s proving to be one of the most resilient. As digital risk increases across healthcare, finance, government, and everyday consumer tools, security teams are becoming core to how companies operate, not an afterthought. That means more investment in people, more opportunity to specialize, and more chances to work on problems that are both technically challenging and deeply consequential.
The companies on this list are tackling high-stakes challenges, earning trust through real customer adoption, and building teams designed to scale. From engineering, product, and data roles to security operations, customer success, and go-to-market teams, these organizations offer the chance to work at the intersection of innovation, trust, and real-world impact.
For professionals looking to break into tech, grow their skills, or find a mission-driven startup environment, cybersecurity offers a rare combination: long-term demand, meaningful work, and room to grow.
Identity and Access Security
Duo Security
Location: Ann Arbor, MI
Duo Security has helped define modern identity protection by making strong authentication both effective and usable. Built around phishing-resistant multi-factor authentication, Duo secures access to systems without adding friction for users.
Duo processes more than a billion authentications each month for over 100,000 organizations across healthcare, finance, education, and government. Its focus on usability, device trust, and zero-trust principles reflects a culture rooted in human-centered security that protects systems while respecting the people who rely on them.
Keeper Security
Location: Chicago, IL
Passwords and digital credentials are the most common paths attackers use to access systems. Keeper Security works for both individuals and organizations to keep credentials safe with strong encryption and easy-to-use tools that store and manage passwords, passkeys, secrets, and access rights. Keeper’s platform makes it easy to create and store unique, hard-to-guess credentials and protects them with a zero-trust, zero-knowledge security model so only the user can access their data. By bringing enterprise-grade password and access management to teams of all sizes, Keeper helps reduce breaches caused by reused or weak credentials.
CyberFOX
Location: Miami and Tampa, FL
Too many breaches start with something as basic as a stolen password or uncontrolled admin rights. CyberFOX helps businesses close those doors with easy-to-use privileged access management (PAM) and password management solutions that give IT teams clear control over who can do what, and when.
Instead of complex, hard-to-configure tools, CyberFOX focuses on solutions that are simple to set up and manage. This helps managed service providers and IT departments secure endpoints, restrict dangerous privileges, and maintain system-wide password integrity, resulting in fewer weak points for attackers to exploit.
Island
Location: Dallas, TX
Accessing web apps and data is a part of work, but traditional tools can make security feel like a barrier. Island builds security into the browser experience itself, so users can work faster without compromising safety. Rather than bolting on security after the fact, Island makes secure access, threat protection, phishing defense, and data control native to the workspace so teams can use cloud apps confidently.
Internet, Exposure, and Risk Visibility
Censys
Location: Ann Arbor, MI
Censys helps security teams understand exactly what parts of their organization are visible on the public internet, offering the same view a potential attacker would have and enabling organizations to identify vulnerabilities they wouldn’t otherwise know exist. Security teams can quickly answer questions like: What do we have exposed? Is it risky? And what should we fix first? That visibility helps organizations reduce blind spots, respond faster to threats, and stay ahead of attackers.
SpyCloud
Location: Austin, TX
SpyCloud helps organizations prevent attacks that start with stolen identities by turning criminal-sourced data from breaches and underground sources into information that defenders can use immediately. Instead of waiting for bad things to happen, SpyCloud proactively helps teams identify where employee, partner, and customer credentials are exposed and automates actions to fix those risks. By offering visibility into key vulnerabilities, SpyCloud helps organizations reduce compromise events and fraud losses and stay ahead of identity-based threats.
NetSPI
Location: Minneapolis, MN
NetSPI helps organizations get ahead of attackers by actively uncovering vulnerabilities across networks, applications, and cloud environments before a breach occurs. NetSPI’s team of seasoned security experts conducts penetration testing (PTaaS), attack surface evaluations, and custom assessments that mimic real-world attacks. As a result, teams get clear, prioritized insights into their weakest links and expert guidance on how to fix them so they can reduce risk with confidence and improve their overall security posture.
Detection, Response, and Security Operations Center (SOC) Support
Red Canary
Location: Denver, CO
When cyber threats slip past defenders, the damage can be costly and disruptive. Red Canary helps teams stop threats early by combining smart automation with real security expertise. Rather than overwhelming teams with generic alerts, Red Canary uses a managed detection and response (MDR) service that looks across endpoints, cloud systems, and networks to highlight the threats that actually require action. By combining this tool with 24/7 support and partnership, Red Canary gives security teams confidence that they’re catching the threats that matter most, freeing them up to focus on strategic priorities instead of endless alert fatigue.
Pondurance
Location: Indianapolis, IN
Cyber threats evolve faster than many teams can keep up. Pondurance combines around-the-clock threat monitoring, expert analysis, and automated tools so defenders can detect, investigate, and stop attacks early. The company takes a risk-based approach to security. Instead of generating alerts, it helps teams understand what matters most and focus on the highest-impact risks. With a U.S.-based SOC and services that include incident response, vulnerability management, and compliance support, organizations get both the visibility and human expertise they need to improve their overall security posture without overwhelming their internal teams.
Binary Defense
Location: Stow, OH
Binary Defense helps teams see what matters by combining automated threat detection with real human analysis and response support. Seasoned analysts watch for threats across endpoints, networks, and cloud systems, with round-the-clock monitoring, helping organizations discover intrusions, investigate suspicious activity, and respond quickly.
Blumira
Location: Ann Arbor, MI
With Blumira, businesses can monitor their systems, user activity, and cloud tools to spot suspicious behavior early. When it comes to notifications, the platform focuses on surfacing the signals that truly matter, along with an explanation as to why something looks risky and what to do next.
Blumira makes security accessible. Setup is fast, insights are easy to understand, and guidance is built in, so teams don’t need a large security staff to get real protection. That makes it especially valuable for growing companies, schools, healthcare organizations, and nonprofits that need strong security without added complexity.
Application, AI, and Emerging Tech Security
HiddenLayer
Location: Austin, TX
HiddenLayer focuses on securing one of the fastest-growing attack surfaces today: artificial intelligence and machine learning systems. As companies deploy generative models and autonomous AI tools, HiddenLayer helps make sure those systems stay safe from manipulation, data theft, and misuse. From supply chain checks, real-time threat detection, and automated testing, HiddenLayer simulates attacks before they become reality so companies can adopt AI with more confidence, reduce risk to their intellectual property and data, and make compliance easier as regulations evolve.
NowSecure
Location: Chicago, IL
Mobile apps power everything from banking and shopping to healthcare and enterprise work. But improperly secured apps can expose sensitive data and open doors for attackers. NowSecure focuses on testing and securing mobile applications before they reach users, helping organizations find and fix flaws that could lead to leaks, unauthorized access, or compliance problems. By combining scalable automation with clear reporting, organizations learn to understand and proactively reduce risk across every mobile touchpoint, which means fewer surprises for development teams, stronger protection for user data, and faster paths to security and privacy compliance.
Mayhem Security
Location: Pittsburgh, PA
To find weaknesses before attackers, you need continuous testing. That’s where Mayhem Security steps in, helping automate adversary-style testing so organizations can continuously check their defenses the way an attacker would. Mayhem runs automated, real-world simulations that uncover hard-to-find weaknesses in applications and infrastructure, offering continuous visibility.
Governance, Trust, and Human Enablement
SensCy
Location: Ann Arbor, MI
SensCy makes the complex world of cyber risk simple and actionable by giving organizations a SensCy Score, which is like a credit score for cybersecurity health. This enables teams to see exactly where they stand and what matters most. From there, SensCy provides a clear roadmap and dedicated human support to help improve protections step by step. With a focus on making security understandable and achievable, SensCy offers practical support that helps reduce risk, meet compliance expectations, and build confidence in their defenses without unnecessary complexity.
Keyfactor
Location: Independence, OH
Keyfactor secures the cryptographic foundations that enable digital trust. Its platform automates the management of certificates and keys that underpin secure connections across devices, applications, and infrastructure. With better visibility and control over machine identities, organizations can prevent outages, reduce operational risk, and prepare for future threats.
Security Journey
Location: Pittsburgh, PA
Technology can’t stop every attack if the people using it don’t understand the risks they are facing. Security Journey works with developers, IT staff, and executives to help teams build stronger security skills through practical, engaging learning content. Security Journey’s training includes paths tailored to people’s roles, helping teams understand secure coding, threat awareness, and defensive best practices that fit their day-to-day work. By making learning actionable and relevant, Security Journey helps organizations improve the way they work to reduce risky behavior and build a culture that’s resilient to mistakes and emerging threats.
TrustedSec
Location: Fairlawn, OH
TrustedSec helps teams navigate risk with customized cybersecurity services that go beyond off-the-shelf tools. By working side-by-side with its clients to improve security, its experts specialize in penetration testing, incident response, risk assessments, and strategic security consulting. With this high-touch support, organizations gain a clear view of where they’re most vulnerable and how to strengthen defenses.
The companies highlighted here differentiate themselves through clear impact, real customer trust, responsible practices, and teams built to scale. Whether it’s preventing compromised identities, revealing hidden exposures, strengthening mobile and AI systems, or building human cyber skills, each of these organizations is contributing to a more secure and resilient digital future.
