The most coin Impervious and fortified against attack

[funcryptoco]

Because the market is full of many kinds of currencies, I would like to know which currencies are more immune to threats in terms of classification

POW ONLY
POS ONLY
POW WITH MASTER NODE
POS WITH MASTER NODE

[HODL2090]

There are many other algorithms being used by different blockchain and modifications made on the ones listed, like DPOW, which gives consensus to the community to validate a node.

I personally prefer POW, and it would be very difficult almost impossible for a malicious miner to overtake a valid chain to double spend, and it would be very power demanding
It's best to singularly research on each algorithm as they are all unique.