Top Data Security Startups in 2026

Kaseya is the leading provider of complete IT infrastructure management solutions for Managed Service Providers (MSPs) and internal IT organizations worldwide. Kaseya’s best-in-breed technologies allow organizations to efficiently manage and secure IT to drive sustained business success. Kaseya has achieved sustained, strong double-digit growth over the past several years and is backed by Insight Venture Partners (insightpartners.com) and TPG (tpg.com), two of the leading global private equity firms investing in high-growth technology and software companies that drive transformative change in the industries they serve. Founded in 2000, Kaseya currently serves customers in over 20 countries across a wide variety of industries and manages over 10 million endpoints worldwide. To learn more about our company and our award-winning solutions, and company culture go to Kaseya.com

Archesys provides a wide range of technical services and has been doing so for over 20 years, making a significant impact in the areas of organization, culture, and technology in both the private and public sectors. From digital modernization to process management, our team is the go-to resource for various government agencies looking to improve or overhaul their operations.

We’re the world’s largest web services platform. Our mission is to make opportunity more inclusive for all and fuel a new generation of entrepreneurial endeavors — commercial, civic, creative. Join our diverse collective of employees across our many global locations.

Zscaler is revolutionizing internet security with the industry’s first Security as a Service platform. As the innovative firm in the $35 billion security market, Zscaler is used by more than 5,000 organizations, including 50 of the Fortune 500. Zscaler ensures that more than 13 million users worldwide are protected against cyber-attacks and data breaches while staying fully compliant with corporate and regulatory policies. Zscaler is a Gartner magic quadrant leader for secure web gateways and delivers a safe and productive internet experience for every user, from any device and from any location—100% in the cloud. With its multi-tenant, distributed cloud security platform, Zscaler effectively moves security into the internet backbone, operating in more than 100 data centers around the world and enabling organizations to fully leverage the promise of cloud and mobile computing with unparalleled and uncompromising protection and performance. Zscaler delivers unified, carrier-grade internet security, a next-generation firewall, web security, sandboxing, advanced persistent threat (APT) protection, data loss prevention, SSL decryption, traffic shaping, policy management, and threat intelligence—all without the need for on-premise hardware, appliances, or software.

RSI Security is a leading cybersecurity compliance firm that specializes in providing comprehensive security assessment, advisory, and technical security testing services. RSI is trusted by over 500 organizations for their PCI DSS, PCI SSF and ASV, CMMC, HITRUST, vCISO, and penetration testing. As an accredited PCI QSA, C3PAO, and HITRUST assessment organization, We support organizations in simplifying the complex cybersecurity landscape, ensuring they achieve and maintain compliance while managing risks effectively.

We were founded to protect and defend our collective privacy from exploitation. Together, our founders laid the groundwork for a revolutionary new approach to data security in response to advances in quantum computing. Via strategic investments in cutting-edge quantum hardware companies and exclusive partnerships with premier global research institutes and U.S. national labs, we have amassed multiple quantum entropy sources to create high-quality random keys at scale. As a result of this technology and its revolutionary Everlasting Security protocol, we have developed the only cryptographic solution capable of securing information indefinitely with mathematical proof as evidence.

At Teleskope, we believe that data security and privacy is shifting left, and should be automated and enforced from within at the earliest stages. We are building a developer-first data security platform that provides companies with complete and actionable visibility into their continuously growing data.

Our CIS ControlsTM and CIS BenchmarksTM are the global standard and recognized best practices for securing IT systems and data against the most pervasive attacks. These proven guidelines are continuously refined and verified by a volunteer, global community of experienced IT professionals. CIS is home to the Multi-State Information Sharing and Analysis Center® (MS-ISAC®), the go-to resource for cyber threat prevention, protection, response, and recovery for U.S. State, Local, Tribal, and Territorial government entities.

Data is precious, yet siloed, due to technological hurdles and privacy constraints. Synthesized's software uses AI to learn the structure of original data and simulate practically useful new data points, thus unleashing data's full potential whilst protecting people's privacy. The company is funded by leading technology investors in the UK and Europe and is supported by Facebook through the LDN_LAB programme and Google through the Residency programme.