QFAM modifies the QUIC Retry token to include a cryptographic challenge (proof-of-work) that clients must solve before the server allocates handshake CPU.
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QFAM: Mitigating QUIC Handshake Flooding Attacks Through Crypto Challenges
QFAM modifies the QUIC Retry token to include a cryptographic challenge (proof-of-work) that clients must solve before the server allocates handshake CPU.