Latest Avast Secure Browser 49 user agents:

User Agent	Platform	Device
Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.76 Safari/537.36	Windows Vista	Unknown
Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.75 Safari/537.36	Windows Vista	Unknown
Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.2623.200 Safari/537.36	Windows Vista	Unknown
Mozilla/5.0 (Windows NT 6.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.75 Safari/537.36	Windows Vista	Unknown
Mozilla/5.0 (Windows NT 6.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.2623.200 Safari/537.36	Windows Vista	Unknown
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.75 Safari/537.36	Windows XP	Unknown
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.2623.200 Safari/537.36	Windows XP	Unknown
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.75 Safari/537.36	Windows 10	Unknown
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.76 Safari/537.36	Windows XP	Unknown
Mozilla/5.0 (Windows NT 6.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safer/49.0.79.76 Safari/537.36	Windows Vista	Unknown