[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Network](./puppeteer.protocol.network.md) > [SecurityDetails](./puppeteer.protocol.network.securitydetails.md) > [mac](./puppeteer.protocol.network.securitydetails.mac.md) ## Protocol.Network.SecurityDetails.mac property TLS MAC. Note that AEAD ciphers do not have separate MACs. Signature: ```typescript mac?: string; ```