As far as I know, Putin says that he doesn't use mobile phones and computers. Can it be considered a security measure? Other officials, like PM Medvedev, are be

As far as I know, Putin says that he doesn't use mobile phones and computers. Can it be considered a security measure? Other officials, like PM Medvedev, are better with technology and had their devices hacked: [1] Regarding Yandex, they have good talents there so what they say might be true. [1] https://www.theguardian.com/world/2014/aug/14/dmitry-medvedev-russian-pm-twitter-account-hacked https://www.theguardian.com/world/2014/aug/14/dmitry-medvede...