By the time you start seeing signs of a malware attack, your system is probably already infected. It's easy to become enticed by the offer on a pop-up ad. While many pop-ups and emails from reputable companies are safe, the adware programs that generate illegitimate malware pop-ups and malware spam are capable of installing spyware to hijack your browser and capture your personal information. Are you prepared for today’s attacks? Discover the year’s biggest cyber threats in our annual Threat Report. These annoying ads come in many forms, but generally, they are trying to sell you something. If you have email, odds are you are familiar with spam. If you browse the internet, odds are you're familiar with pop-ups.