The week one exchange lost money and another closed: what to take away

The week one exchange lost money and another closed: what to take away

Within a few days the market got two reminders in a row. One venue lost 351.6 million dollars from its hot wallets and halted withdrawals, another simply stopped operating for good.

The events differ in nature and are identical in meaning for anyone who keeps money on exchanges. From what we observe, weeks like this teach more than half a year of calm trading, and forgetting their lessons costs the most.

Lesson one: it is not the cryptography that gets broken

Nobody touched the private keys in this story. The attackers came in through an ordinary corporate system and forged a transfer instruction, and the signature went through as normal.

Hence an unpleasant conclusion about judging venues. A reputation in crypto security, audits and multisignature say nothing about how well protected a company's internal network is.

These are two different disciplines, and it is usually the second that gets broken. A user has no way at all of checking it from the outside.

Lesson two: the spread on a frozen exchange is unreachable

When withdrawals stop, the price on the venue detaches from the market and a huge difference appears on your screen. It looks like a gift. There is no gift there.

Buying cheaper there is possible, withdrawing and selling higher elsewhere is not. You simply swap accessible money for frozen money, and you do it on your own initiative.

We reckon this trap costs people more on such days than the incident itself.

Lesson three: a closure is visible in advance

The venue that left the market this week had been losing liquidity for years. First the market makers went, then the book thinned out, and only at the end did the announcement appear.

The signals were readable long before the news: the spread inside the exchange itself was widening, depth at the usual levels was falling, executing the same size was getting more expensive. All of that is visible to anyone who looks at the book rather than only at headlines.

Lesson four: a reserve helps but does not solve

The user protection fund covered the hole with room to spare this time. Good news, and easy to give too much weight to.

A fund is the venue's own voluntary reserve rather than a contract with an insurance company. It saves you when the loss fits inside its size and is useless if the incident turns out larger.

So treating it as grounds for keeping a lot of money on an exchange is a mistake. It is a pleasant addition, nothing more.

What to do with all this

Recount the balances on every venue in money rather than percentages. Compare them with the weekly turnover of your pairs on that same exchange.

Spread the legs of your pairs so that one venue dropping out does not break the whole construction. Open a couple of spare accounts in advance, while you do not need them.

And check the depth of the book on the venues where you work at least once a month. In our view that is the only available way to notice an exchange's problems before they are written about in the news.

Our tools

Tracking depth and gaps across dozens of venues by hand is impossible. Our arbitrage screener keeps dozens of venues in one window, refreshes quotes every second and shows each gap together with the volume actually behind it. The spread calculator helps you check what survives fees, network costs and slippage at your size. The bot is fully manual. It never connects to your exchange API keys.

To test the tools on a live market, ArbitrageScanner offers one day of free access to the whole ecosystem.

FAQ (Frequently Asked Questions)

1. The week's main conclusion?

Venue risk is not visible in the order book and does not get counted in returns, yet it can wipe out a result in one evening. Decide the size of your balance on each exchange in advance.

2. Why can you not take the spread on a frozen exchange?

Because there is nothing to withdraw from there. Buying cheaper will work, selling higher elsewhere will not, and you voluntarily swap free money for blocked money.

3. Can you tell in advance that an exchange is weakening?

Often yes. A growing spread inside the venue, falling depth and a rising cost of executing the same size appear long before any official announcement.

4. How reliable is a reserve fund?

It helps with a loss that fits inside its size. It is the exchange's own voluntary reserve rather than an insurance contract, so it cannot be treated as a guarantee.

5. What should you do first?

Write out the sums on every venue and compare them with the weekly turnover of your pairs there. Withdraw the surplus and open spare accounts in advance.

Conclusion

The week showed both sides of infrastructure risk at once: the sudden one, where money leaves within an hour through a breached backend, and the slow one, where a venue loses liquidity for years and quietly closes.

The quality of your strategy protects you from neither. Only distribution protects you: how much sits on each exchange, how the legs of your pairs are spread and what you will do when one of the venues stops answering. Those questions get settled on a calm day, not on the day of the news.

IMPORTANT! We are software developers. We do not give recommendations or promises of earnings and we do not advise you to invest your money anywhere. Our software is fully manual, all your money stays under your own control. We show examples of how our clients have earned on arbitrage in the past, but we do not advise repeating those actions one to one. Your earnings depend solely on your own actions and on market factors.