[KongchangAI]
Unverified50% confidenceFactExact time

QUIC 0-RTT allows clients to send early data before the handshake completes, but if the target does not implement the stateless Retry specified in RFC 9000 §8 or the session ticket rotation of RFC 9001 §4.6.1, a passive observer may capture the early data stream and replay it.

1
Sources
50%
Confidence
Long-term
Relevance
10/17/2026
First Seen

Sources

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https://kongchang.com/claim/1053695
API
curl https://kongchang.com/api/v1/knowledge/claims/1053695
MCP
get_claim(id=1053695)