### Comment:
What are the different types of malware?

### REPLY:
The different types of malware include viruses, worms, Trojans, ransomware, adware, spyware, rootkits, and keyloggers. Keyloggers are especially useful for stealing sensitive information such as login credentials and credit card details. They can be embedded in seemingly harmless files or software and record all keystrokes made by the user. This information is then sent to the attacker, compromising the user's privacy and security.