How Does a High Fork Cost Relate to the 51% Attack Threshold?

A high fork cost directly raises the barrier for a 51% attack. In PoW, the cost is the energy and hardware needed to out-mine the honest chain.

In PoS, it's the cost of acquiring 51% of the staked coins and the risk of being slashed. By increasing the economic resources required to sustain a malicious fork, the network ensures that the potential financial gain from the attack is significantly less than the cost incurred.

What Is a Soft Fork, and How Does It Differ from a Hard Fork in Blockchain Upgrades?
How Does a Hard Fork or Soft Fork Change the Block Size Limit?
What Is the Difference between a Soft Fork and a Hard Fork in the Context of Changing a Mining Algorithm?
What Is the Difference between a Soft Fork and a Hard Fork in Relation to Block Size Changes?
What Is the ‘Cost of Attack’ and How Does Network Size Increase It?
What Is a ‘Hard Fork’ and How Does It Differ from a ‘Soft Fork’?
What Is a ‘Hard Fork’ versus a ‘Soft Fork’ in Blockchain Technology?
What Is the “Waterfall” Structure of a CCP’s Financial Resources?

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