Binance has restored 95% of the cryptocurrency stolen in last week's record $6.3 billion hack, co-CEO Richard Teng said Tuesday at Hong Kong Fintech Week, according to Reuters. Teng described the exchange as being in "very strong" health despite absorbing the largest theft in crypto history.

The speed of the replenishment is the headline here. A $6.3 billion loss would be existential for most exchanges, and Binance's ability to backfill nearly all of it within a week is a statement about the depth of its reserves — and a deliberate one, delivered from a fintech conference stage to an audience of regulators and institutional players.

The open questions are the ones Teng's remarks didn't address: how the attackers got in, whether any funds have been traced or frozen, and what the breach means for custody practices across the industry. A hack of this scale will draw regulatory scrutiny regardless of how quickly the balance sheet recovers, and competitors and counterparties will be watching for the full post-mortem.