Adware is a type of software that displays advertisements on your computer. These advertisements will be displayed in the form of a pop-up window on your screen, even if you are not browsing the Internet. Companies add adware to their software usually freeware and shareware to pay for programming costs.

Spyware is a type of software that collects information from your computer and sends it to a third party without your knowledge or permission. This can include information regarding which websites you visit or more sensitive information such as your username and passwords.

Untrustworthy companies can sell this information to advertisers that can target you in the form of spam. This could also lead to identity theft. Some spyware programs are also keystroke recorders, meaning that they record which keys you type on your keyboard. These malicious programs will be able to take note of your social security number, bank account numbers, or even credit card information.

There are ways for you to protect yourself from these programs. Most of todays antivirus software can detect and remove adware and spyware from your computer. There are also other programs that specifically target adware and spyware. It is always smart to have such protective software installed on your computer. Regular computer scans are also highly recommended.

Not all adware is bad for your computer. Sometimes, it is necessary for your application to work. Adware is often integrated into the software, and its removal will cause the software to stop working. This is why it is important to read the terms and conditions provided by the software prior to adware removal.

As far as spyware is concerned, it is never a good thing to have in your computer. A soon as you detect spyware, remove it immediately.