51% Attack, Majority Hash Rate Attack
This definition comes from the technical glossary.
Definition
The ability of someone controlling a majority of network hash rate to revise transaction history and prevent new transactions from confirming.
Synonyms
- 
    51 percent attack 
- 
    Majority attack 
Links
- 
    51% attack — Developer Guide 
- 
    What can an attacker with 51% of hash power do? — Bitcoin StackExchange 
- 
    Bitcoin.pdf — Satoshi Nakamoto