CZ warns acquiring a crypto exchange often inherits legacy security issues like old backdoors and hacks, not just users. BitMart and BitMEX closures add to consolidation wave.
Binance co-founder CZ warned that buying a smaller crypto exchange carries risks many companies underestimate. The advice came as BitMart and BitMEX announced they would wind down operations.
CZ said acquiring a smaller centralized exchange is not the same as buying a conventional business. The buyer could inherit legacy security issues, including old backdoors or vulnerabilities that ordinary due diligence may not catch, he said. That includes potential hacks that stem from the target's earlier security failures.
The warning comes as crypto M&A activity picks up. Architect Partners, a crypto-focused investment bank, recorded 71 merger and acquisition transactions worth $12.9 billion in the second quarter of 2026. That is the second-largest quarter for crypto M&A on record, the firm said.
The period included several high-profile deals. Coinbase acquired Deribit, a derivatives exchange. Bullish, the company behind the Bullish exchange, bought Equiniti for $4.2 billion. Japan's SBI Holdings acquired Coinhako, a South Korean exchange.
The closures of BitMart and BitMEX underscore the pressure on smaller players. BitMart said it would wind down after a "careful evaluation." BitMEX, founded by Arthur Hayes, also said it was closing. Both cited difficult market conditions.
The risk CZ described is not hypothetical. If an acquired exchange harbors a latent vulnerability, the buyer could face a hack that costs customers and reputation. The 2022 hack of FTX, though not an acquisition, demonstrated how quickly security issues can spiral, CZ noted.
Buyers who rush into deals without thorough security audits may find themselves responsible for problems they did not know existed. CZ said the industry should treat exchange acquisitions with the same caution as buying a technology company with a long history of security flaws.
The contrast between the closures and the M&A wave shows a sector in flux. Some operators are exiting; others are betting that consolidation will let them scale. The $12.9 billion in deal value in Q2 2026 is second only to the $13.4 billion in Q1 2022, according to Architect Partners. The firm's next quarterly report is due in the fourth quarter.
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