More than 50 Norwegian oil and energy companies have been hacked by unknown attackers, according to government security authorities. A further 250 firms have been advised by the Norwegian government that they ought to check their networks and systems for evidence of a breach, The Local reports. State-owned Statoil, Norway’s largest petro company, appears to be the main target of what’s described as the country’s biggest ever hack attack. Statoil is a major contributor to the Norwegian government’s coffers, and as such – unlike most major oil and gas companies, perhaps – its revenues mainly go to fuel the Scandinavian social miracle rather than funnelling wealth to the usual suspects.