The tier of the three-tier architecture consists of computers, phones, and other mobile devices that have browsers that request and process web pages.

User tier

Explanation:

In accordance with three-tier architecture of client and server architecture, user tier is the level where the end users are present to interact with the devices such as computer, laptops, phones or mobiles. Users are able to access these devices through interface.

This interface lets the user operate the function and application present in the device through browser that helps in accessing the websites and web pages to perform the particular action.  Services and tools can be utilized by the user of the devices.

Idon't have a single clue tbfh

Yeah they want to steal your info and sell it on the dark web. they want your credit/debit card numbers, social security numbers, google passwords, and other stuff. some people install spyware onto your device, which, as the word suggests, is built to spy on your every move, such as what you type. they then sell this information to other people secretly or use it for evil purposes themselves. or both, idk. the reason why this info costs money to learn is because its valuable info. im not saying that i condone it though! hacking sucks, and whoever is involved in it is just a horrible person.