This indicates an attempt to access ZenMate.
ZenMate is a VPN service, developed by ZenGuard, that encrypts desktops, browsers and mobile apps connection to the internet. ZenMate creates a tunnel between the users and the server network. ZenMate uses the TLS protocol to connect to the server. The browser extension does not encrypt non-browser network traffic. Users that would like to encrypt all sessions need to use the full desktop version of the app.