A new threat has emerged for smartphone users. This threat is associated with a popular anti-virus application. Which most users use to protect their smartphones from malware or viruses. These anti-virus apps have now become the enemy of users. These infected anti-virus apps have been detected by privacy and security research firm VPNPro. This case is also considered to be very serious because these anti-virus apps have been downloaded about 190 crore times. That is, there is a risk on crores of devices.