He's actually a Russian Internet meme, identified by Sophos reader @suncho as "свидетель из Фрязино." People insert him in otherwise innocent images to photobomb pictures after they've already been taken. He's a virtual photobomb.
Even the virus edition of Instagram contributes something to Android.
If this is all too mainstream for you – the virus, Android, Facebook, non-Mac users openly discussing the merits of Mac-user aesthetics – you can delete your Instagram account and get on with your life.
Just don't download Angry Birds if you're looking to blow off some steam with a stupid game, at least if you're using Android. Trend Micro found a virus on it, too.
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