Binance CFO Kaiser Ng departs a week after $6.3 billion hack

Binance loses its top finance executive

Binance chief financial officer Kaiser Ng is stepping down from the cryptocurrency exchange, a change announced just over a week after hackers made off with $6.3 billion in user funds.

TechCrunch reported the departure on November 7, citing a statement from co-CEO Yi He that Bloomberg obtained. In the statement, Yi He said Ng is leaving after more than five years at the company to start a new venture of his own, and that a handover plan had already been put into effect over the preceding six months. Justin Yek will take over as CFO.

The breach that preceded the announcement

The timing is difficult to separate from the crisis now engulfing the exchange. Ng's exit was made public barely more than a week after attackers drained $6.3 billion worth of cryptocurrency from Binance users, one of the largest thefts the industry has recorded.

Binance froze withdrawals for several days in response. Once accounts were unfrozen, customers pulled out a net $3.6 billion within the first few hours, according to TechCrunch — a rapid outflow that illustrates how sharply the incident dented user confidence, even after the company moved to reassure depositors.

Binance and the FBI have attributed the attack to a North Korean group tracked under the name TraderTraitor. The company has also committed to absorbing the damage itself, saying the financial impact of the stolen funds will be borne by Binance rather than passed on to its users.

A transition planned before the hack

According to the timeline Yi He described, as reported by Bloomberg, the CFO succession was already underway roughly half a year before the breach occurred. That suggests the departure is not a direct reaction to the incident.

Even so, the optics are uncomfortable. Binance is losing its most senior finance official at precisely the moment it has promised to swallow a multi-billion-dollar loss — a commitment that puts reserves, solvency and financial reporting, the CFO's core territory, at the centre of the story. Whether the timing is coincidental or not, investors and regulators will scrutinise the handover from Ng to Yek closely, since Yek will be responsible for demonstrating that the company can absorb the hit without distress.

The huge immediate outflows after withdrawals resumed add another layer of pressure. Custodial exchanges live and die by confidence, and billions leaving within hours of reopening shows how quickly users will move their funds when trust is shaken.

Why it matters

A $6.3 billion theft would be a landmark event for any financial institution, and the CFO departure in the immediate aftermath compounds the perception of instability at the world's largest crypto exchange. Binance's pledge to cover all losses means the financial burden now sits entirely on its own balance sheet, and the person who would normally vouch for that balance sheet is on the way out. The episode also renews longstanding questions about centralised custody in crypto: funds held on an exchange remain exposed to the exchange's own security failures, no matter what reimbursement promises follow. How Yek handles the fallout — and whether the promised reimbursements hold — will be a key test of Binance's resilience and of the broader market's tolerance for custodial risk.