| A | B |
|---|
| Disk Defragmenter | Relocates separated parts of files to contiguous areas, improving disk access speed |
| Disk Cleanup | Identifies unnecessary files and gives you the ophon to delete them to free up hard disk space |
| Check Disk | Finds and fixes file system errors and errors caused by bad spots on the disk |
| Backup | Backs up copies of files you specify to an external source such as a removable hard disk, writeable CD/DVD, or network location |
| System Information | Displays detailed information about the installed hardware and software |
| System Restore | Creates restore points, which are snapshots of the Registry settings, and uses them to restore settings |
| Windows Defender | Checks the system for harmful software and helps you remove it |
| Windows Firewall | Protects the system from outside access via network ports |
| Adware | software that displays ads without your consent |
| Spyware | software that tracks your usage habits or obtains your private information and transfers that information to its developer. |
| cookie | a plain text file containing your personal information that web pages place on your hard disk and then access later when you re-visit that same web page; most are harmless, but some can be used to compromise your privacy online. |
| virus | computer code that attaches to an executable file, so when that file rrms, the code rrms too, usually doing something harmful to the computer system. |
| Worm | self-transporting container that spreads a virus or other malware items on a network. |
| Trojan Horse | program that appears to do something useful but is actually malware, causing harm to your computer or invading your privacy. |
