Interested passenger (or 'The Age')
Problem has been diagnosed as a faulty ECU from the factory.
Each ECU (one per engine) has 2 channels A and B. In this case one channel failed, then as it should have, the other channel took over. However due to a manufactuing defect, the failed channel was still sending a 'closed' signal to the fuel valve which could not be overpowered by the operating channel, therefore disallowing fuel to the engine.
In the many thousands of ECU units produced this is the first such occurence worldwide.
As above, a failure due to fuel contamination in modern day jets would require a very large amount of contaminant, not possible if proper procedures are followed.
Dual engine failure on a modern day twin, the only incidence I can think of is fuel starvation.
There's every reason to trust that if you have enough fuel the 'live' engine will get you down safely.