The terms spyware and adware generally refer to computer programs that hide themselves from a user and perform undesirable or even malicious commands without a user's knowledge or informed consent.
Spyware records a user's activities or keystrokes (including logins and passwords) and sends them to a third party, sometimes a hacker. On public computers, spyware may store keystrokes for later retrieval by the hacker. Some spyware programs may also record a user's web surfing history.
In the case of adware, users experience a stream of unexpected pop-up advertising. Adware has also been known to hijack a user's home page or preferred search engine and direct a user to alternate websites.
Spyware and adware can be surreptitiously installed on your PC in a number of ways:
Cars.com has signed the Anti-Spyware Initiative sponsored by the Interactive Advertising Bureau. The initiative is a response to proposed legislation that targets spyware and adware. It seeks to give the internet industry a voice in the debate, so that legitimate, common marketing practices that are widely accepted as beneficial, such as the use of cookies to recognize user preferences, are not caught up in the effort to abolish spyware.