What hashrate majority does DAGKNIGHT need to stay secure?

DAGKNIGHT stays secure as long as honest miners control more than 50% of the network's total hashrate. This threshold means that as long as the majority of the network's mining power is operating honestly, the protocol can order transactions correctly and resist manipulation. Importantly, DAGKNIGHT reaches this guarantee while making fewer assumptions about how the network behaves — it does not depend on pre-set estimates of how long messages take to travel between nodes, which can be wrong and potentially exploited. For a beginner, this matters because a protocol that quietly relies on an incorrect timing assumption can be tricked by an attacker who manipulates network conditions; DAGKNIGHT is designed to avoid those openings.