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cs.CR2026
Sustained Participation as a Security Resource: The Bounded Participation Channel
Homayoun Maleki, Nekane Sainz, Jon Legarda +1
Can sustained, per-identity participation be engineered into a security resource? Most anti-Sybil defenses price identity creation rather than identity survival. Once admitted, an…
cs.CR2026
Scarcity Is Not Enough: Structural Limits of Linear Sybil Cost Under Parallelizable Resources
Homayoun Maleki, Nekane Sainz, Jon Legarda +1
Permissionless systems resist Sybil attacks by binding influence to scarce resources. Yet influence concentration persists across systems built on computation, capital, and other r…
cs.CR2026
Human Challenge Oracle: Designing AI-Resistant, Identity-Bound, Time-Limited Tasks for Sybil-Resistant Consensus
Homayoun Maleki, Nekane Sainz, Jon Legarda
Sybil attacks remain a fundamental obstacle in open online systems, where adversaries can cheaply create and sustain large numbers of fake identities. Existing defenses, including…