Top Security Startups in 2027

Click&Free is building an operating system for digital autonomy. We help people identify where their data leaks, remove harmful exposures, regain control, and turn privacy from passive fear into guided action. Our system combines Privacy Check, Remove, Privacy Guides, OneClick onboarding, and Data2Cash to make self-protection understandable, actionable, and economically relevant. We are not another content site or agency — we are building infrastructure that converts privacy demand into measurable outcomes.

Dart Browser is building a browser for the agentic web, with privacy, useful AI, and user control at its core. Built on Chromium, Dart combines local-first AI agents, hardware-bound cryptographic identity, and bring-your-own-model flexibility. The Dart Agent helps people research, summarise information, and complete tasks across tabs. It works with browsing context such as tabs, bookmarks, history, and local documents, within permissions set by the user. Local models keep inference on the device; users can also choose their own cloud provider or company gateway. Our approach centres on three principles: • Local-first intelligence, with cloud inference as a user choice. • Model freedom: connect your own provider or local runtime, without Dart marking up inference. • Verifiable security: hardware-backed identity, post-quantum cryptography, and local agent action logs. We are a small team working across browser engineering, security, cryptography, applied AI, and design. Based in Delhi and San Francisco and working remotely, we value clear written decisions, meaningful ownership, and transparent research. Our mission is to build a browser that serves the person using it. If you care about privacy, AI, and making complex technology useful, explore our opportunities and help shape what comes next. Learn more at dartbrowser.com.

If you’re familiar with any of the DIY single-point smart home products that have appeared on store shelves in the past few years, you might be surprised to learn exactly how ambitious the Vivint Smart Home product suite is, and how both expansive and detailed our knowledge must be to build it. Delivering an industry leading smart home platform requires impressive coordination, as well as broad and deep technical expertise, neither of which is in short supply here. Here’s a sampling of our smart home development efforts: innovation.vivint.com/inside-the-vivint-innovation-center-building-a-smarter-…

Operating in the aerospace, defense, and security sector, Terma supports customers and partners all over the world. With more than 1,400 committed employees worldwide, we develop and manufacture mission-critical products and solutions that meet our customers’ needs and requirements. Terma provides mission critical solutions for the defense and aerospace industry. We are guided by one overall purpose: to deliver security for countries, alliances, and individuals. Security is a means to maintaining and developing prosperity and protecting human lives and sovereignty. We operate in a variety of areas, but security is always the key. We deliver advanced technologies to keep people safe, both in peaceful times and in times of conflict. Our systems provide security for people on land, at sea, and in the air. In space, we are engaged in reaching new frontiers and enabling people on our planet to deal with new and future challenges.

eSentire is the Authority in Managed Detection and Response, protecting the critical data and applications of 1500+ organizations in 80+ countries, representing 35 industries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events. Combining cutting-edge machine learning XDR technology, 24/7 Threat Hunting, and proven security operations leadership, eSentire mitigates business risk, and enables security at scale. The Team eSentire difference means enterprises are protected by the best in the business with a named Cyber Risk Advisor, 24/7 access to SOC Cyber Analysts & Elite Threat Hunters, and industry-leading threat intelligence research from eSentire’s Threat Response Unit (TRU). eSentire provides Managed Risk, Managed Detection and Response and Incident Response services. For more information, visit esentire.com and follow @eSentire.