Source Defense
Track on RadarClient-side security platform protecting websites from JavaScript-based attacks
- Total raised
- $41.33M
- Employees
- 49
- Founded
- 2014
- Momentum
- 38
Cooling
Data updated August 2026
About
About Source Defense
At a glance
Source Defense is a cybersecurity company specializing in Application Security, founded in 2014 and headquartered in Rosh Ha'ayin, Israel. It has raised $41.33M in total funding, employs about 49 people, and is privately held.
Source Defense is a security and data privacy compliance platform that protects websites collecting sensitive data or conducting transactions. The company addresses client-side security risks in the digital supply chain by monitoring and controlling how JavaScript executes within web browsers. The platform provides real-time threat detection, protection, and prevention of vulnerabilities originating in JavaScript code. It focuses on protecting sensitive data at the point of input inside the browser, where modern web attacks such as eSkimming, formjacking, and unintended data leakage occur. The patented technology continuously monitors and controls script execution to detect and prevent data exfiltration before information can be stolen or misused. Source Defense serves over 1,000 organizations including Fortune 500 enterprises across financial services, retail, eCommerce, healthcare, travel, and other transaction-driven industries. The company is a Principal Participating Organization and member of the PCI Board of Advisors within the PCI Security Standards Council, contributing to eSkimming security requirements in PCI DSS 4.0.1, including requirements 6.4.3 and 11.6.1. The platform uses machine learning, AI, and industry best practices to provide automated and dynamic rules and policies that control access and permissions of JavaScript-based third-party tools operating on websites. These tools include analytics, advertising, chat, payment solutions, and other services used to enhance user experience and engagement. The company was founded in 2014 and is headquartered in Israel with operations across the United States.
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Privately held
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FAQ
Frequently asked questions about Source Defense
When was Source Defense founded?▾
Source Defense was founded in 2014.
Where is Source Defense headquartered?▾
Source Defense is headquartered in Rosh Ha'ayin, Israel.
How much funding has Source Defense raised?▾
Source Defense has raised a total of $41.33M in total funding.
Is Source Defense public or private?▾
Source Defense is a privately-held company.
How many employees does Source Defense have?▾
Source Defense has approximately 49 employees.
