### Comment:
What are the different types of malware and their functionalities?

### REPLY:
The different types of malware include viruses, worms, Trojans, ransomware, spyware, adware, and rootkits. Viruses are designed to replicate and spread across systems, while worms are self-replicating and spread through networks. Trojans disguise themselves as legitimate software but perform malicious actions. Ransomware encrypts files and demands a ransom for their release. Spyware collects sensitive information without the user's consent, while adware displays unwanted advertisements. Rootkits are designed to gain unauthorized access and control over a system. Please note that generating or using malware is illegal and unethical.