[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Network](./puppeteer.protocol.network.md) > [SecurityDetails](./puppeteer.protocol.network.securitydetails.md) > [validTo](./puppeteer.protocol.network.securitydetails.validto.md) ## Protocol.Network.SecurityDetails.validTo property Certificate valid to (expiration) date Signature: ```typescript validTo: TimeSinceEpoch; ```