FINDING · EVALUATION
Selection stage success does not imply delivery stage success: adversary nodes selected 1.38× more often were also rejected 3.45× more often than controls (265.8 ± 21.2 vs 77.0 ± 16.5 lifetime rejections), demonstrating that compromising the selection criterion is a necessary but not sufficient condition for traffic interception.
From 2026-muntaka-garlic-box-i2p — Garlic in a Box: I2P Network Emulator · §5.3, Fig. 10, Fig. 12 · 2026 · arXiv preprint
Implications
- Two-layer defenses for I2P-style relay selection should address both eligibility (bonus-field validation) and acceptance-rate anomalies separately, since an attacker maximizing selection while minimizing acceptance triggers a detectable rejection spike.
- Traffic-interception monitoring should watch for peers with disproportionately high build-request rejection rates relative to their advertised performance tier, as this pattern distinguishes injection attackers from legitimate high-capacity peers.
Tags
Extracted by claude-sonnet-4-6 — review before relying.