This is something that is very important. There is a piece of malware called "EasyPDF Combine". Here's my story of how I almost broke my computer. I was browsing the internet, looking for interesting mods or whatever. I found one called "Multiplayer Hacks". It was kinda suspicious. The website wasn't secure, and it was extremely shady. The walls (like the background) were white, and it used the default Arial font. I decided "why tf not" and downloaded it to my computer. Instantly, my web browser changed from the traditional "New Tab" screen in Firefox to this weird... new... creepy website I thought nothing of it. Probably just a glitch, right? Wrong. According to my research, this website hijacks your browser and takes control of your computer. So I started digging and I found a way to get rid of it. There was this Firefox page about it, and then this was the real guide. Moral of the story, don't download shady stuff.