Metamask has mainnet installed, while testnets are hidden by default. But what details are required when adding a custom network to connect to the Polygon (Matic) network via Metamask? Are there any security risks, or trojan horse (fake) connection details to watch out for?
And in general, how will surfing the Polygon network be different than Ethereum Mainnet? Are there no noticeable differences in UI/UX?