Bitget Says Suspected North Korean Hackers Drained $351.6M From Hot and Warm Wallets

The attacker spoofed transaction data and let the exchange approve the theft
Bitget's CEO described how a compromised backend system triggered the authorization process that moved the funds.
Mark

Start with the basics. How did they actually get the money out?

Mimi

According to CEO Gracy Chen, the attacker compromised a critical backend system in the wallet infrastructure, spoofed transaction data, and that triggered Bitget's own authorization process to move the funds.

Mark

So the exchange effectively approved the transfers itself.

Mimi

That's how she describes it. The attacker fed the system false data and the normal approval flow did the rest.

Luke

Worth saying that's Bitget's account. How the intruder got into that backend system is still under investigation, and Mandiant and SlowMist haven't reported yet.

Mark

The loss figure changed too, didn't it?

Mimi

Yes. $351.6 million at first, then roughly $390.06 million after further on-chain tracing and classification of transactions.

Luke

So treat both numbers as the company's estimates at a point in time. The second may not be final either.

Mark

And the North Korea link?

Mimi

Chen cites IP behavior and on-chain patterns. Elliptic and TRM Labs independently report laundering overlaps with earlier DPRK-attributed hacks, including Bybit, and TRM points to TraderTraitor.

Luke

Overlaps in laundering wallets are strong signals, but the reporting calls the attribution suspected. Nobody has confirmed it. Also, only $339,100 in stablecoins has been frozen so far, tiny against the total.

  • Security alarms flagged unauthorized transfers from Bitget's hot wallets just after 18:30 UTC, and the loss climbed from $351.6 million to roughly $390 million within days.
  • Withdrawals froze as a precaution while customers wait to learn whether their access to funds will return intact.
  • Investigators from Mandiant and SlowMist are tracing how an intruder spoofed transaction data to trigger the exchange's own authorization process.
  • Blockchain analysts at Elliptic and TRM Labs link the laundering trails to earlier North Korean thefts, though attribution is not yet confirmed.
  • Phased withdrawals are set to resume from September 28, but recovery so far has frozen only about $339,100 of the stolen stablecoins.

On the night of September 24, 2026, a major cryptocurrency exchange discovered that its own hot and warm wallets had been drained of hundreds of millions of dollars, and it pointed toward North Korean hackers, a pattern the world has watched repeat itself across the digital age. The attacker reached the exchange not by breaking through its vaults but by corrupting the internal machinery that authorizes transfers, so that the platform's own process signed away its money. Customers' balances remain intact and the cold storage was untouched, yet the episode reminds us how much trust rests on systems few people ever see. Whether the trail leads conclusively to Pyongyang remains a question the analysts are still weighing.

At 18:31 UTC on September 24, 2026, security systems at the cryptocurrency exchange Bitget flagged unauthorized transfers out of a handful of its hot wallets. Within hours the company had named a loss of $351.6 million from its hot and warm wallets and pointed to suspected North Korean threat actors.

Bitget insisted its cold wallets and most of its assets were untouched. Customer balances, it said, remained accurate, and deposits and trading kept running, though withdrawals were paused as a precaution. Its separate self-custodial wallet product, running on different infrastructure, was not affected.

CEO Gracy Chen explained that the intruder had compromised a critical backend system in the wallet infrastructure and spoofed transaction data, tricking the exchange's own authorization process into sending funds out. The route of entry is still under investigation, and Mandiant and SlowMist have been brought in for an independent inquiry. Chen said attribution rests on IP behavior and on-chain patterns consistent with known North Korean groups.

A follow-up post raised the figure to about $390.06 million and launched a Recovery Bounty Program, inviting exchanges, researchers and the wider community to help freeze the stolen assets. Elliptic and TRM Labs have added weight to the attribution, tracing the funds to laundering addresses used after the 2025 Bybit theft and pointing to the TraderTraitor group.

If confirmed, the Bitget theft would push North Korea's 2026 crypto haul to $1.04 billion, second only to 2025's record. On September 26 Bitget said the vulnerability had been fixed and that withdrawals would resume in phases from September 28. Recovery so far has been modest, with Circle and Tether freezing around $339,100, and the findings from the outside investigators are the next thing to watch.

At 18:31 UTC on September 24, 2026, security systems at the cryptocurrency exchange Bitget flagged unauthorized transfers out of a limited number of its hot wallets. By the time the company posted about it on X, it was describing a theft of $351.6 million from its hot and warm wallets, and pointing the finger at suspected North Korean threat actors.

Bitget said its cold wallets and the overwhelming majority of platform assets were unaffected. Customer account balances remain accurate, it said, and deposits and trading continued to operate normally. Withdrawals, however, were suspended as a precaution while what the company called a comprehensive security review gets under way. It also noted that Bitget Wallet, a self-custodial product, runs on completely separate infrastructure from the exchange and was not affected.

CEO Gracy Chen laid out more detail. The stolen assets include ETH, XRP, BNB, AVAX, USDT and USDC, moved across Ethereum, the XRP Ledger, Arbitrum, Avalanche, Optimism, BSC and Base. According to Chen, the attacker compromised a critical backend system within the wallet infrastructure, used it to spoof transaction data, and thereby triggered the exchange's own authorization process to send funds out. She said no further unauthorized transfers are possible, though how the intruder got into the system is still under active investigation. Bitget has brought in Google-owned Mandiant and the firm SlowMist for an independent inquiry.

Chen said the attribution rests on IP behavior patterns and on-chain analysis, which she described as highly consistent with known North Korean groups. She added that the company has contacted the foundations of all affected chains, and some have confirmed freezing the hacker wallet addresses.

The figures moved after the first announcement. In a follow-up post, Bitget said assets worth approximately $390.06 million had gone to attacker-controlled addresses across multiple networks, citing its latest on-chain tracing and classification of transactions. It also launched a Recovery Bounty Program, calling on exchanges, blockchain projects, security researchers, investigators and the wider on-chain community to help freeze and recover the assets.

Outside analysts have added support to the attribution. Elliptic reported connections between XRP from the Bitget theft and ETH from an earlier exploit attributed to North Korea, as well as links between the stolen funds and addresses used to launder proceeds from previous attributed hacks, including the 2025 Bybit theft. Elliptic observed that shared laundering infrastructure is a recurring feature of such cases, with launderers favoring speed over operational discipline. TRM Labs found multiple overlaps with wallets used to launder earlier North Korean hacks, including Bybit and AFX Bridge, and said these point to the TraderTraitor group.

That group is best known for stealing $1.5 billion from Bybit and $292 million from KelpDAO's LayerZero bridge. About a week before the Bitget incident, SentinelOne attributed an attack on an India-based IT services company to TraderTraitor. If Bitget is confirmed as North Korean work, 2026 would reach $1.04 billion in North Korean crypto theft, making it the second-largest year on record behind 2025's $1.68 billion. Ari Redbord, TRM Labs' Global Head of Policy, said North Korea keeps stealing at alarming speed and scale, and argued the industry must harden its cyber controls while also going after the actors offensively.

On September 26, Bitget said the vulnerability used in the incident had been identified and addressed, and that withdrawals will resume in orderly phases beginning September 28 at 8 a.m. UTC. It reiterated that the incident is contained and user funds were unaffected. Recovery so far looks small: according to a Coindesk tracing dashboard, Circle and Tether have frozen stablecoins worth $339,100 tied to the hack. Watch for further freezes and for the findings from Mandiant and SlowMist.

The attacker compromised a critical backend system within the wallet infrastructure, spoofed transaction data, and triggered the authorization process to move funds out; the intrusion method remains under investigation.
— Gracy Chen, Bitget CEO
North Korea keeps stealing from this ecosystem at alarming speed and scale.
— Ari Redbord, Global Head of Policy, TRM Labs
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