Malware

 Here’s a broad definition of each term:

1. **Malware**: A general term for any malicious software designed to harm, exploit, or otherwise compromise computers, networks, or devices. Malware includes viruses, worms, Trojans, ransomware, and spyware.

2. **Spyware**: A type of malware that secretly monitors a user's activity, gathering information like browsing habits, personal data, or keystrokes. This information is often sent back to a third party without the user’s consent.

3. **Spam**: Unsolicited and often irrelevant or inappropriate messages sent over the internet, typically through email. Spam is usually sent in bulk for advertising or phishing purposes.

4. **Junk**: Refers to unwanted digital clutter, including unnecessary emails (junk mail) and files, that take up space and slow down systems. Junk is similar to spam but can also include files from apps or services that are no longer useful.

5. **Cookies**: Small text files stored by websites on a user’s browser. Cookies are used to track user activity, remember login information, and personalize the web experience. They can be useful but also raise privacy concerns if used to track behavior across multiple websites without consent.