About DefensX
Secure Industries, Inc. runs DefensX, a browser security product. A lightweight extension on the browsers employees already use adds phishing protection, data loss prevention, zero-trust access and controls on how staff use AI tools. DefensX sells it to small and midsize businesses through the managed service providers that run their IT, including through the Pax8 and Sherweb marketplaces.
The company is based in New York. Its founders are CEO Halis Osman Erkan and CTO Murat Demirten. Revo Capital invested in 2023, and Elsewhere Partners made a growth investment in July 2026.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Jul 7, 2026 | Jul 20, 2026 | $12,712,843of $13.4M target | 16 | $794K | EquityRule 506(b) | Form D ↗ |
| Nov 12, 2021 | Nov 29, 2021amended Nov 29, 2022 | $550,000of $2.0M target | 6 | $91,667 | Debt, OptionsRule 506(b) | Form D/A ↗1 earlier filing |
| Total, two offerings | $13,262,843 | |||||
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Rounds announced by DefensX
What the company said publicly about its funding. Announced amounts can differ from Form D figures: an announcement can combine several closings, and some money is raised without a Form D.
| Announced | Round | Amount | Investors | Source |
|---|---|---|---|---|
| Jul 29, 2026 | Growth | Undisclosed | Elsewhere Partners (lead) | defensx.com ↗ Elsewhere Partners ↗ |
| Apr 18, 2023 | Funding | Undisclosed | Revo Capital (lead) | defensx.com ↗ |
Why Investors Backed DefensX
Investors backed DefensX because work has moved into the web browser, while most security tools still guard the network or the device. DefensX protects the browser session itself with an extension on Chrome or Edge, so no one has to switch browsers. It sells to small and midsize businesses through their managed service providers, a market that the large browser security products have mostly left alone. Elsewhere Partners made a growth investment in July 2026.
The problem it targets
Software as a service, remote work and AI tools mean people now create and share sensitive data in the browser, Elsewhere Partners argues. Yet DNS filters, VPNs and endpoint agents work at the network or device level and do not see the browser session. Small and midsize businesses face the most risk, Elsewhere adds, because attackers use them as entry points into larger supply chains.
What the product does
DefensX adds phishing defense, data loss prevention, AI governance and zero-trust access through an extension on the browsers people already use. DefensX built it for managed service providers: one console manages many client companies, pricing is per seat with no minimums, and billing runs through marketplaces such as Pax8 and Sherweb. In July 2026 it added features to govern how employees use AI tools, Channel Insider reported.
Who backs it
Revo Capital invested in April 2023, and its founding partner Cenk Bayrakdar sits on the board. Elsewhere Partners, an Austin private equity firm, made a growth investment in July 2026, and its partner Nick Stoffregen joined the board. Stoffregen said DefensX "has built a world-class product that customers love, especially as they look to establish AI guardrails within their organizations."
How the market is moving
Large security companies have paid to enter the browser layer. In about two years Palo Alto Networks bought Talon, CrowdStrike bought Seraphic, Zscaler bought SquareX and Akamai bought LayerX, Elsewhere Partners notes. Most of those products target large enterprises, and many require a proprietary browser.
We wrote this summary from public statements by DefensX and its investors. It is not investment advice.
DefensX in the News
Leadership Team
Executive officers and directors listed on DefensX's Form D filed Jul 20, 2026.
Earlier filings also listed Martina Aufiero (chief financial officer, last listed Nov 2022) and David Walsh (director, last listed Nov 2022).
Sources
- SECSecure Industries, Inc. Form D, filed Nov 29, 2021
- SECSecure Industries, Inc. filing history
- Company siteTeam page on defensx.com
- Company sitePrivacy policy on defensx.com, issued by Secure Industries, Inc. (updated December 1, 2021)
- Company siteTerms and conditions on defensx.com (Secure Industries MidCo, Inc. d/b/a DefensX)
- Press releaseDefensX growth investment by Elsewhere Partners, July 29, 2026 (defensx.com)