What are bots?

Bots are internet robots, also known as spiders, crawlers, and web bots. They are basically used for repetitive jobs. You've probably seen these bots on social media in the comments section. They often come in the form of malware which will take over your computer. Bots can also be used for positive things such as gathering info, automatic interaction with instant messaging. However, most bots are used for negative purposes such as gathering pass3words, to obtain financial info, launch Dos attacks, open back doors on the infected computer. These bots usually go unnoticed and will hide in "the shadows" of a computer. Your computer is probably affected by bots if your internet access is slow, computer crashes for no reason, programs are running slow, pop ads popping up even when you're not using a web browser and much more (check the link). Some of the ways you can protect your computer from these bots are:
Install firewalls
Use complicated passwords
Don't use the same password
Make sure your software's are up to date
Don't use portable storage drives in an infected computer.

Link: https://us.norton.com/internetsecurity-malware-what-are-bots.html