Sekant Security

Sekant Security is a browser security company that provides a lightweight browser extension designed to detect and remediate cyber threats directly within the browser environment. The product operates using on-device, in-browser detection models without relying on cloud servers, meaning all analysis is performed locally and no sensitive data leaves the browser. The extension supports Chrome, Edge, Firefox, and Brave browsers, with Safari support listed as forthcoming. It can be deployed via MDM for managed environments or self-installed by end users. An administrative management console allows IT teams to review incidents and configure fleet-wide policies. Sekant addresses four primary use cases: - Phishing prevention: Uses multiple models to detect brand impersonation and block malicious pages before credential or token entry, including protection against OAuth-based attacks. - ClickFix detection: Scans clipboard content for malicious PowerShell or shell script patterns associated with ClickFix social engineering attacks, using deobfuscation techniques and clearing the clipboard before execution. - Malicious download blocking: Employs an inline scanning engine using YARA and contextual rules to block unsafe file downloads before they can be opened, with support for custom enterprise rules. - Shadow AI governance: Monitors and controls data pasted or uploaded to unauthorized AI tools, with logging, user warnings, and policy-based blocking of sensitive information. The company states its technology was featured at BlackHat USA 2026 and DEFCON 34. Sekant targets enterprise IT and security teams seeking browser-layer visibility and control beyond what network perimeter tools provide.