A simple antivirus is no longer enough to safely protect yourself from an attack
The growth in the creation of new malware continues to grow, and in the second quarter of 2015 PandaLabs saw an average of 230,000 new types each day and a total of 21 million new threats during those three months. PandaLabs is Panda Security’s anti-malware laboratory, and represents the company’s nerve center for malware treatment
The most common malware are Trojans, which account for 71.16% of all the samples spotted during this period. In second place, by a great distance, are the classic viruses, which accounted for 10.83%.
PandaLabs report is available here - http://www.pandasecurity.com/mediacenter/src/uploads/2014/07/Pandalabs-2015-Q2-EN.pdf