Network Attacks and Defenses
12 min readarticleIncludes quiz · 5 questions
Learn about potential attacks on the Bitcoin network and how the protocol defends against them.
Attack Vectors:
- •51% Attack: Control majority hashrate
- •Double Spend: Spend same coins twice
- •Sybil Attack: Create many fake nodes
- •Eclipse Attack: Isolate nodes
- •Selfish Mining: Withhold blocks
- •Time Warp Attack: Manipulate timestamps
Defense Mechanisms:
- •Proof of Work: Makes attacks expensive
- •Decentralization: No single point of failure
- •Checkpoints: Prevent deep reorganizations
- •Peer Diversity: Multiple node connections
- •Economic Incentives: Honesty more profitable
- •Time Limits: Timestamp validation rules
Test Your Knowledge
This lesson includes a 5-question quiz (passing score: 80%).
Quiz functionality available in the mobile app.