Adware is a type of software designed primarily to display advertisements to users. Unlike some malware, adware typically doesn't directly damage your system, but it degrades your computing experience and can create security risks.
How adware works:
- Installs alongside legitimate free programmes, especially media players, file converters, or browser extensions
- Tracks your browsing habits to target you with relevant ads
- Hijacks your homepage or search engine settings
- Injects popup ads, banners, or video advertisements into websites you visit
- May redirect you to sponsored websites or shopping sites
Why it matters:
Adware slows your device noticeably by consuming CPU, memory, and bandwidth. More importantly, the advertisements themselves can be vectors for actual malware. Clicking a malicious ad might install ransomware or spyware. Adware also collects data about your browsing and purchasing habits, raising privacy concerns.
Common scenarios:
You download free software without reading the installation prompts carefully and end up with adware bundled in. Your web browser suddenly shows ads on every page you visit, or your search results redirect through sponsored portals.
What you can do:
During software installation, choose the custom install option and uncheck any boxes offering optional toolbars, browser extensions, or search engine changes. Use reputable antivirus programmes to scan for and remove adware. On browsers, install ad blockers and remove suspicious extensions. Be cautious downloading from unofficial sources. If adware persists, consider a clean operating system reinstall as a last resort.