Based on the scenario given, describe the type of malware and the policies measures to prevent this malware.

a) After searching the internet for office supplies and visiting one of the search engine results websites, a user reports that they began receiving unsolicited pop-ups on subsequent website visits. (2 marks)

b) A user downloads a desktop theme application from an unknown website. After running the application, system performance is prolonged, and numerous antivirus alerts are displayed.