You get protection against viruses, malware, phishing, spyware and dangerous websites. The malware detection is 100 percent for both 0-day attacks (web and email) as well as for detection of the most common spread malware in the last four years. This also combines a digital signature matching engine with heuristic monitoring, when it comes to antivirus to detect both known and unseen threats. Sure, it's not the cheapest, but for the price you get a 100 percent detection rate for both viruses and malware.
Bitdefender Total Security is one of the best antivirus software options out there right now and was our top pick for best antivirus 2021.