[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [Frame](./puppeteer.protocol.page.frame.md) > [securityOrigin](./puppeteer.protocol.page.frame.securityorigin.md) ## Protocol.Page.Frame.securityOrigin property Frame document's security origin. Signature: ```typescript securityOrigin: string; ```