Teardrop attacks are a type of Denial-of-Service (DoS) attack that disrupt system operations by sending malformed IP fragment packets. In the crypto space, they can affect nodes, wallets, and exchanges, leading to communication disruptions and transaction delays. To defend against such attacks, systems should be updated promptly to patch security vulnerabilities, firewalls and intrusion detection systems should be configured to filter abnormal traffic, and security at the network layer should be reinforced, thereby effectively ensuring the stability and security of blockchain networks.