Most people worry about the wrong thing first, as they picture a crash, a rug pull, or a hacked wallet.
What actually gets them is earlier and simpler: a fake website that looks exactly right, or a platform that briefly credits your account with Bitcoin that was never there.
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Two separate exchange stories broke this week. Different causes, different geographies, but pointing at the same gap: in crypto, the infrastructure of trust still breaks in pretty basic ways.
CoinDCX and the cost of being a known brand
India’s CoinDCX found itself at the center of a fraud investigation after Thane Police arrested co-founders Sumit Gupta and Neeraj Khandelwal in Bengaluru, following an FIR filed by an insurance advisor who claims he was defrauded of roughly 85,000 USD through promises of high returns and franchise opportunities tied to the CoinDCX brand.
The exchange says the founders had nothing to do with it. Their version is that the entire case flows from impersonators who built fake identities and fake platforms using the CoinDCX name to target ordinary investors, and that the complaint itself was filed by those same impersonators.
The detail that stands out is the scale of the impersonation operation. Between April 2024 and January 2026, CoinDCX says it identified and reported more than 1,212 fake websites cloning its domain, not a one-off phishing attempt, but an industrial operation built around borrowed legitimacy.
That is the uncomfortable side of being a trusted crypto brand: the more users recognize your name, the more useful that name becomes to people who want to steal from those users.
The real company ends up scrambling with takedowns, public warnings, and damage control while a parallel fraud machine runs under its logo.
Bithumb and the phantom Bitcoin problem
Bithumb’s story is structurally different, because there are no fraudsters here.
On February 6, a staff member at South Korea’s second-largest exchange entered payout amounts in Bitcoin instead of Korean won during a promotional event, causing the system to credit 695 user accounts with a combined 620,000 BTC, roughly 15 times the exchange’s actual holdings of around 42,000 BTC, with a face value exceeding 40 billion dollars.
Some users sold or withdrew around 1,788 BTC before the error was caught, briefly crashing Bithumb’s local Bitcoin price by 17%.
In custody we trust?
Bithumb recovered 99.7% of the erroneous credits within 35 minutes using automated controls and reimbursed affected users at 110% of losses, so no permanent customer harm resulted.
But the CEO later admitted to the South Korean parliament that internal ledgers were only reconciled against actual holdings once every 24 hours, and that smaller errors had happened before.
That is a different kind of trust problem: the exchange did not get defrauded from outside, but it defrauded itself through a combination of human error and reconciliation gaps that should not exist on a platform of that scale.
Bithumb is now moving to reappoint the same CEO for another two-year term, despite a significant regulatory fine and multiple active probes still open.
Same week, different risks
These two cases are not the same thing. One is about external fraudsters weaponizing a brand to defraud retail investors. The other is about internal controls failing on a live trading system handling real customer funds.
But the takeaway is the same either way: your exposure on a crypto exchange does not start when prices move.
It starts long before, in the moment you type a web address, hand a company your funds, or assume a platform’s systems are running as advertised. Both of those assumptions had a rough week.
Crypto market researcher and external contributor at Kriptoworld
Wheel. Steam engine. Bitcoin.
📅 Published: March 24, 2026 • 🕓 Last updated: March 24, 2026
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