Who is hacking Europe’s supermarket fridges and freezers, and why?

After a second apparent cyber-attack in as many weeks, we examine possible culprits and their motives

• Shop fridges and freezers across Europe hit by fresh suspected cyber-attack

Supermarket fridges and freezers in seven European countries have malfunctioned, their thermostats remotely cranked up in some cases to 50C (122F).

The EU has condemned what it said was a deliberate attempt to disrupt our food supply chain and undermine consumers' confidence in it".