Top 5 sources of spam by country (in %)Roger Ditter02/09/2016February 9, 20161. USA (15.2) | 2. Russia (6.2) | 3. Vietnam (6.1) | 3. China (6.1) | 5. Germany (4.2) | Source: Kasperskyhttps://p.dw.com/p/1Hs1FImage: picture-alliance/dpaAdvertisement