as you know there have been many attacks recently and tens of thousands of MongoDB databases were hacked and the data is held for ransom. Even mainstream news sources like BBC covered this.
Many sources claim that only Mongo versions below 2.6 are affected. Unfortunately, I can confirm that versions above 3 (part of MEAN stack) also can be hacked...
Can you please provide some recommendations for modifying the default config that Mongo comes with so that it is more secure. The official guide has several options here. It would be nice to hear your what the 'real people' have to sya.