Directory · US
Computer and Network Security in United States
A register of firms and the professionals working at them in the Computer and Network Security sector based in United States. Browse the public index, then filter or export on Kipplo.
Companies
8.7K on file
Oneleet
Oneleet is the cybersecurity platform for building real security controls, achieving compliance (SOC 2, ISO 27001, GDPR, HIPAA), and maintaining a strong security posture as you grow. Everything You Need in One Platform- Manage your entire security program from a single view. At Oneleet, we believe compliance should follow security—not the other way around. We start by building a pragmatic, effective security program tailored to your company. We provide the tools and expertise you need: • Compliance Platform. Streamline evidence collection and management for SOC 2, HIPAA, ISO 27001, GDPR, and more. Reduce audit preparation time. • Code Security Scanner. Embed security early. Identify and resolve vulnerabilities in your codebase. • Attack Surface Discovery. See your business like an attacker. Identify and monitor external-facing assets and risks. • Penetration Testing. Expert-led testing by OSCE/OSWE certified pros to find critical vulnerabilities missed by automated scans. • Access Reviews. Ensure least privilege. Stay on top user permissions across critical systems to reduce risk. • vCISO + Security Programs. Get on-demand, enterprise-grade security expertise and tailored programs without the full-time CISO cost or ramp-up time. • Trust Center. Showcase your security posture and compliance achievements to build customer confidence and speed up sales cycles. • Third-Party Audits. We streamline the auditing process for SOC 2, ISO 27001, HIPAA, and more with trusted third-party auditors. • Oneleet Agent. Enforce security policies and monitor your company’s devices. • Employee Portal. One place for security resources, training, and support to boost employee awareness. Pass vendor reviews faster, and unlock deals. Stop security from being a blocker.
51 to 200 staff
Opal Security
The best security and engineering teams use Opal to manage access for everyone and everything in the modern enterprise — from employees and contractors to service accounts and AI agents. Recognizing that access moves rapidly, touches everything, and changes constantly, our AI-proofed authorization control plane is built for how identity works (and what identity security needs) today and tomorrow: scale, speed, and intelligence. We are based in New York City and San Francisco, trusted by leading hypergrowth startups and the Fortune 500 alike, and backed by Greylock, Battery Ventures, Silicon Valley CISO Investments (SVCI), and other top experts from around the world. To learn more, visit
11 to 50 staff
Packetwatch
PacketWatch®: Proactive Cybersecurity for a Complex World Traditional security tools often miss the stealthiest threats—sophisticated cyberattacks, insider risks, and hidden malware. PacketWatch takes a smarter approach, detecting and neutralizing dangers before they take hold, keeping your operations, data, and reputation secure. With proactive, human-led network and host-based threat hunting, rapid incident response, and deep visibility across IT, IoT, OT, and legacy systems, PacketWatch puts you in control. It also ensures regulatory compliance and validates security controls, so you can focus on what matters—your business. Available as software or a fully managed service, PacketWatch is more than protection—it’s a strategic advantage. Learn more at
11 to 50 staff
Perimeterx Now Human
PerimeterX is the leading provider of solutions that detect and stop the abuse of identity and account information on the web. Its cloud-native solutions detect risks to your web applications and proactively manage them, freeing you to focus on growth and innovation. The world’s largest and most reputable websites and mobile applications count on PerimeterX to safeguard their consumers’ digital experience while disrupting the lifecycle of web attacks. PerimeterX is headquartered in San Mateo, California, and at
51 to 200 staff
Phishme, Inc
Cofense, formerly PhishMe, is the leading provider of human-driven phishing defense solutions world-wide. We deliver a collaborative approach to cybersecurity by enabling organization-wide engagement to active email threats. Our collective defense suite combines best-in class incident response technologies with timely attack intelligence sourced from employees to stop attacks in progress faster and stay ahead of breaches. From driving awareness to security automation and orchestration, our solutions are designed to anticipate and disrupt the attack kill chain at delivery to quickly mitigate the impacts from spear phishing, ransomware, malware, and business email compromise. Today this is all made real for thousands of global organizations in the defense, energy, financial services, healthcare, and manufacturing sectors that understand how changing user behavior will improve security, aid incident response, and reduce the risk of compromise. Learn more at
201 to 500 staff
Phoenix Cyber
Phoenix Cyber is a leading cybersecurity services company providing security engineering, operations, and technical cybersecurity expertise to organizations determined to mitigate risk and safeguard their business. Since 2011, security teams from Fortune 500 enterprises, federal government agencies, and service providers have trusted Phoenix Cyber to deliver results-oriented, cybersecurity solutions and enhance the processes and technology used by their security operations centers. Our senior cybersecurity architects and engineers deliver a wide range of services, from incident response and security orchestration and automation to data protection, threat hunting, cloud security, strategic advisory, and more. Whether you need to comply with regulatory requirements or want to take a proactive approach to security, our services will improve your organization’s overall security posture. Phoenix Cyber is a CMMI Level 3, ISO 9001:2015, ISO 27001:2013, and ISO certified company.
11 to 50 staff
Polito, Inc
Polito, Inc. is a cybersecurity company specializing in penetration testing, cloud security, incident response, digital forensics, threat hunting, and more. Polito has helped companies and individuals recover from cyber attacks and malware while also strengthening their security posture. When not defending our clients' networks, we proactively hunt for adversaries by looking for indicators of compromise. In addition to defending against advanced cyber attacks, Polito is a trusted resource in identifying critical vulnerabilities. Polito is proud to support clients in both the private and public sectors. Our team of security professionals have decades of experience and multiple certifications such as OSCP, GWAP, GCFA, CISSP to name a few.
11 to 50 staff
Practical Devsecops
Practical DevSecOps (a Hysn Technologies Inc. company) offers vendor-neutral, practical, and hands-on DevSecOps, AI Security, and AppSec Security training and certification programs for IT & Security Professionals. Our training and certifications focus on modern areas of information security, including DevOps Security, AI Security, Cloud-Native Security, API Security, Container Security Threat Modeling, and Software Supply Chain Security. The certifications are achieved after rigorous tests (06-24 hour exams) of skill and are considered the most valuable in the information security field.
11 to 50 staff
Prancer
Prancer is an AI-native autonomous continuous security validation and Pentesting platform that provides a unique way for Developers, Infra engineers, and the SecOps Red and Blue teams to work and collaborate in one place.
11 to 50 staff
Projectdiscovery
ProjectDiscovery helps security teams detect real, exploitable vulnerabilities without the noise. We combine open source power with enterprise-grade scale, starting with Nuclei, our fast, customizable vulnerability scanner trusted by thousands of engineers. Nuclei delivers attacker-like detections using conditional logic, enabling teams to move beyond version matching and catch what truly matters. Trusted by teams at Elastic, Vercel, and thousands more, ProjectDiscovery brings open-source flexibility to enterprise workflows, enabling full visibility and faster remediation in minutes with zero setup friction. Start with Nuclei. Scale with ProjectDiscovery.
11 to 50 staff
Pyramid Cyber Security & Forensic
Pyramid Cyber Security & Forensic (P) Limited is an ISO 27001 & ISO 9001 certified Cyber Security & Digital Forensics products, solutions and services provider to Enterprises, SMB, Government & Law Enforcement customers. Pyramid has set up several state of the art Digital Forensic Labs, trained thousands of investigation officers, investigated hundreds of insider fraud incidents for enterprises, identified and mitigated tens of thousands of cyber vulnerabilities and attacks for banks, financial institutions, e-commerce, IT/ITES, manufacturing and services companies across globe. Pyramid attracts best talent in the industry and encourages them to innovate and express themselves. Pyramid's experienced cyber security and forensic experts helps hundreds of customers & prospects in dealing with challenges arising out of growing cyber crimes, cyber threats, attacks and vulnerabilities. For more information write to us at contact@pyramidcyber.com
51 to 200 staff
Q-Net Security
Q-Net Security produces hardware that creates an impenetrable barrier between defined endpoints within your existing network. QNS is national intelligence-grade, quantum-resistant security that is more powerful than any other cybersecurity solution in the world. We drop into existing networks with minimal configuration, and render brute force decryption attacks nigh-impossible.
11 to 50 staff
Quokka.Io
Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities — before they become incidents that threaten privacy, intellectual property, sensitive data, and brand reputation.
11 to 50 staff
Randori, An Ibm Company
Randori, an IBM Company is your trusted adversary. Recognized as a leader in offensive security, Randori, an IBM Company combines attack surface management (ASM) and continuous automated red teaming (CART) in a single unified platform to provide a continuous, proactive, and authentic offensive security experience. Relied upon by Meijer, Greenhill Inc, FirstBank, NOV, Lionbridge and many more, Randori helps companies stay one step ahead of attackers by continuously discovering what's exposed and validating risks as they arise. Discover your true attack surface today at
51 to 200 staff
Reach Security
Find and fix hidden risk – weaknesses, vulnerabilities, and misconfigurations using the capabilities and expertise available today. Reach is a virtual AI assistant creating leverage for security organizations to become proactive, using their capabilities to their full potential and defending reachable security gaps. Reach integrates with your existing security stack and provides insights and operational value in minutes. As threats, products, and workforce risk evolve, Reach unifies threat exposure management, security posture management, and configuration management continuously assessing defenses and remediating gaps to ensure the best protection possible. Founded in 2021 during a global pandemic that reshaped how organizations protect their workforce, Reach was built by security veterans from Palo Alto Networks and Proofpoint whose products have been trusted by tens of thousands of organizations. Today, Reach partners with leading security teams and world-class investors to realize a more secure world.
11 to 50 staff
Realnets
We've been Chicagoland's trusted partner providing tech support, cloud services, integrated property technologies, networking, data protection, & cybersecurity for a single, predictable price.
11 to 50 staff
Red Sentry
Red Sentry delivers expert-led penetration testing to help businesses identify and fix security vulnerabilities before attackers can exploit them. As a leader in offensive security and vulnerability assessments, we go beyond checklists to provide real-world testing that strengthens security posture, supports compliance, and reduces risk. We combine human expertise with modern automation to deliver efficient, reliable penetration tests. Unlike scanners that only flag potential weaknesses, our tests simulate real-world attacks to validate security gaps and provide actionable remediation guidance. This hybrid approach helps organizations comply with key security frameworks, meet third-party requirements, and improve overall cyber resilience. Red Sentry supports companies of all sizes across industries such as technology, financial services, healthcare, and professional services. Our services are ideal for security teams, IT managers, and business leaders seeking to protect sensitive data, meet compliance obligations, and proactively reduce cyber risk. Key value propositions include: • Comprehensive penetration testing performed by experienced ethical hackers. • Clear, prioritized reports with step-by-step remediation guidance. • Testing aligned with industry standards such as OWASP and NIST. • A hybrid methodology that blends expert testing with automation for faster turnaround times. • Support for compliance requirements including SOC 2, ISO 27001, HIPAA, PCI-DSS, and FDA. Red Sentry gives organizations a deeper understanding of their security gaps, helps them meet regulatory and client expectations, and builds true resilience through realistic, offensive-security testing.
11 to 50 staff
Red Siege
Red Siege is one of the most trusted information security consulting firms in the industry that concentrates on the latest threats to organizations today. We perform in-depth analysis, determine organization/business risk, and find the vulnerabilities before the bad guys do. The Red Siege team of trained, qualified and experienced information security experts is led by one of the most recognized names in the industry, our CEO Tim Medin.
11 to 50 staff
Red Trident Inc
Red Trident Inc. is a cybersecurity solution provider focused on making critical infrastructure run better. Red Trident’s team of OT Professionals, combined with our cutting edge Cyber-ECP™ technology, monitor systems at a fraction of the cost compared to a business implementing it on their own. By detecting threats before they cause damage, businesses can focus on operations, while leaving security to Red Trident’s team of OT experts. With over a collective of 40 years of experience providing progressive solutions, we bring the best of breed designs to our clients. We are a Texas HUB and VA-certified Service Disabled Veteran Owned Small Business.
11 to 50 staff
Reveal Security
Reveal Security is the preemptive identity security company helping enterprises stop identity-based threats before they cause harm. By applying ML- and AI-powered identity behavior analytics across enterprise applications, Reveal brings visibility, precision, and automation to identity security.
11 to 50 staff
Reverus
We bring a personal approach to every client and will get to know your business before we make any recommendations. Outsourcing your IT operations is about more than solving problems. Reverus works to deliver innovative solutions that optimize your business’s performance. Reverus provides secure and modern IT services for businesses in North Carolina, New York, and Colorado regions.
11 to 50 staff
Safend
A single-agent solution, Safend DPS protects sensitive company data via comprehensive data encryption of ports and devices restriction, as well as control and content inspection. Safend’s product suite includes: 1. Protector: controlling port and device endpoints and media encryption 2. Encryptor: transparent encryption on laptops and PCs 3. Inspector: inspects, classifies and blocks sensitive data leakage 4. Reporter: regulatory compliance reports and security log summaries 5. Auditor: immediate risk detection on WiFi ports/devices connected to endpoints 6. Discoverer: locates and maps sensitive data at rest Safend DPS is silent policies and rules-based solution, answering the following compliances: Sarbanes Oxley,(SOX), HIPAA, PCI, FISMA, BASEL II, UK Data Protection Act (DPA). Furthermore, Safend’s customers include multi-national enterprises, government agencies, healthcare organizations and mid-sized companies worldwide.
51 to 200 staff
Sdm Software, Inc
SDM Software provides software solutions to help companies of all size manage their Windows® Group Policy and Intune® deployments. Group Policy and Intune are the technologies in Windows and Azure for securing and locking down Windows desktops and servers. SDM Software is a leading expert in Group Policy and Intune technology and provides innovative products that allows customers to automate management, change control and reporting in their Group Policy and Intune deployments.
11 to 50 staff
Secure Compliance Solutions
Here at Secure Compliance Solutions (SCS), we’ve got your back when it comes to cybersecurity. We’re all about keeping your business safe with top-notch services, strong governance, and proactive risk management. In a digital world that’s always changing, we're your peace of mind. We focus on three core pillars: Cybersecurity Services: Consider us your cyber guardians, taking care of everything from continuous system monitoring and managed firewalls to penetration testing. We’re here to protect you from malware, phishing attacks, ransomware, and more. Governance and Compliance: We get it—navigating cybersecurity regulations can be complex and time-consuming. We simplify it all, guiding you through standards like NIST 800-53, HIPAA, FISMA, COBIT, and PCI-DSS, so you can stay compliant without breaking a sweat. Risk Mitigation: Our thorough risk assessments and vendor audits help pinpoint vulnerabilities before they become a problem. It's about preventing data breaches, insider threats, and other issues that could harm your business. At SCS, we make cybersecurity more approachable and manageable so you stay empowered and protected. Our team of cyber experts provides the tools, knowledge, and guidance to build a strong, security-conscious culture. Follow us to stay updated on the latest cybersecurity trends and best practices—it’s like having a front-row seat to staying savvy.
11 to 50 staff
