Up to 5 million downloads Security firm Avast confirmed the other two apps alleged to be involved in the infection of millions of devices include a Russian language IQ test app and a Russian history educational tool, which were downloaded up to five million times and up to 50,000 times respectively, according to Google Play. | Filip Chytry, Avast’s malware analyst, said: “Most people won’t be able to find the source of the problem and will face fake ads each time they unlock their device.” |