[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Security](./puppeteer.protocol.security.md) > [CertificateSecurityState](./puppeteer.protocol.security.certificatesecuritystate.md) > [certificateHasWeakSignature](./puppeteer.protocol.security.certificatesecuritystate.certificatehasweaksignature.md) ## Protocol.Security.CertificateSecurityState.certificateHasWeakSignature property True if the certificate uses a weak signature aglorithm. Signature: ```typescript certificateHasWeakSignature: boolean; ```