Malware (short for malicious software) can manifest in various forms: spyware, legitimate programs bundled with viruses, backdoors, worms, adware, ransomware, trojans and more. We created a guide that explains exactly how to rid your Mac or PC of malware. Malware removal can seem daunting after your device is infected with a virus, but with a careful and rapid response, removing a virus or malware program can be easier than you think.