Japanese cryptocurrency exchange Coincheck says that 500M NEM cryptocurrency tokens, worth ~$400M, have been “illicitly” transferred out of the exchange
Coincheck Inc., one of Japan's biggest digital exchanges, said that about $400 million of the NEM cryptocurrency was lost after it was sent …
BloombergYuji Nakamura
Context & Ripple Effects
Coincheck, one of Japan's largest digital exchanges, disclosed that roughly 500 million NEM tokens (~$400M) were illicitly moved off its platform — one of the largest crypto thefts on record at the time. Within days it pledged to repay all 260K affected users out of its own capital rather than through a token rollback or bail-in.
First-order effects
About 260,000 Coincheck customers are locked out of their NEM holdings pending reimbursement, and Coincheck itself must fund a ~$400M repayment from its own balance sheet while trading and withdrawals face disruption.
Second-order effects
The repayment burden is large enough to force an ownership change: by April, Coincheck confirms a takeover by Japan's Monex Group, meaning the exchange survives only under new corporate control.
If the pattern holds — repeated eight- and nine-figure thefts at Japanese venues followed by rescues and consolidations — Japan's exchange sector trends toward fewer, better-capitalized operators with institutional owners, and toward regulatory pressure for segregated or insured customer custody as a licensing condition.
The trend: Japanese crypto exchanges keep absorbing catastrophic custody failures, pushing the sector from founder-run startups toward bank- and brokerage-owned platforms operating under tightening national oversight.
All withdrawals from the platform are currently restricted, including JPY. Thank you for your understanding. We are doing our utmost to resume normal operations as soon as possible. http://coincheck.com/...
If you aren't a trader, do NOT leave your crypto on an exchange. Ever. This was THE BIGGEST HACK IN THE HISTORY OF CRYPTO and there *will* be more. Airbitz rebranded into @EdgeSecure to specialize in SECURITY. Beta signup here: http://edgesecure.co/ http://www.coindesk.com/...
It's fine, this stuff is all on the blockchain and secured by the unstoppable power of code—you say they have no idea who or how it was taken or where it's gone or even how much was taken? Anyway, as I was saying, fiat currencies is dead, cryptocurrency— where'd he go? http://twi…
Main takeaways from Coincheck press conf: - only NEM impacted - plans to continue operating, restart trading - not clear on plan to repay customers - no multisig - wouldn't admit security was weak - not sure how hacked, if domestic or foreign hackers - CEO barely spoke
If this is a real hack Coincheck should just give all customers an X% haircut, self-issue debt tokens, and then list the debt token on their exchange. Just like another exchange that rhymes with “ribfinex.” Or fork NEM into NEM Classic. Either way, more coins for everyone. http:/…
Currently, credit card, Pay Easy, and convenience store payments are suspended. We sincerely apologize for these inconveniences and will continue to do our best to be back to normal operations as soon as possible. http://coincheck.com/...
Keep in mind Coincheck's application for an exchange license is still pending with the FSA. The deadline was October, but they were given wiggle room. So maybe they ran out of wiggle room? Just another wrinkle in the mystery behind today's trading halt http://www.bloomberg.com/..…