Illustration: North Korea-linked hackers steal record $6.3 billion from Binance
Binance · Breach

North Korea-linked hackers steal record $6.3 billion from Binance

· 8 min read

Binance suffered the largest crypto theft on record: about $6.3 billion left the exchange's hot wallets across ten blockchains on October 29, most of it within roughly 20 minutes, according to TRM Labs. Binance says the entry point was a compromised DevOps engineer's laptop, infected through a fake job interview scam, which gave access to a service container to submit unauthorized withdrawals, with no leak of private keys; TRM Labs, Elliptic and Chainalysis attribute the attack with high confidence to North Korea's TraderTraitor. About $3 billion has been frozen by issuers and partners, withdrawals remain suspended, and Binance pledged to cover losses with SAFU and company funds while warning customers about scams.

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In this article
  1. What happened
  2. Why it matters
  3. What to do
  4. For the technical team
  5. Timeline
  6. Sources

What happened

Hackers drained about $6.3 billion in crypto from Binance's internal wallets, the world's largest exchange, in the biggest crypto theft on record. According to Binance, the intrusion started with a compromised engineer's laptop, infected through a fake job interview scam, which gave access to a service container used to submit unauthorized withdrawals. TRM Labs, Elliptic and Chainalysis attribute the case with high confidence to North Korea's TraderTraitor group.

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Why it matters

The theft surpasses the previous record, the $1.4 billion Bybit heist in 2025, and led Binance to halt withdrawals. The company pledged to cover all losses with SAFU and company funds, and about $3 billion has been frozen, but the attackers still hold about $2.4 billion in ETH and BTC that issuers cannot freeze, according to TRM Labs. The case shows a single employee's laptop reached systems that move billions.

What to do

Binance customers should rely only on official channels and distrust links, messages and requests for account information tied to the incident. Companies holding crypto should review hot wallet permissions and delegations (including EIP-7702) and limit engineering computers' access to signing systems.

For the technical team

Affected
Binance, exchange de criptomoedas; roubo de US$ 6,43 bilhões por atacantes que comprometeram engenheiros com entrevistas de emprego falsas e um instalador Homebrew trojanizado, abusaram de ferramenta · Binance hot wallets across ten blockchains, per TRM Labs, which calculated about $6.36 billion siphoned on October 29; Binance puts the damage at $6.3 billion.
Exploitation
Theft confirmed by Binance and executed on October 29, with most of the value moved within roughly 20 minutes, according to TRM Labs and TechCrunch. TRM Labs attributes it with high confidence to TraderTraitor (North Korea), Chainalysis points to the same group and Elliptic attributes it to North Korea; ZachXBT cites Lazarus Group. Binance has not publicly identified the hackers and is cooperating with law enforcement.
Fix
No software patch applies. Binance suspended withdrawals (deposits returned to normal, with withdrawal resumption expected within 45 hours), revoked the affected address authorization, said unauthorized outflows ceased after the pause, and is working with issuers and law enforcement to freeze and recover funds; it promised a full technical post-mortem and an updated proof of reserves.
Vector
A compromised DevOps engineer's laptop gave access to a service container used to submit unauthorized withdrawal transactions, according to Binance; the company says it found no evidence of private key leaks. On Ethereum, the attackers abused EIP-7702 delegation with a batch of 50 permissions pre-signed by the hot wallet, delegating it to a contract only they controlled; on the other nine blockchains funds left through validly signed transactions, which per TRM Labs indicates the attacker made Binance's hot wallet signing system sign transactions of their choosing.
More details
TRM: at least a day and a half of preparation, operator wallet funded with small Tornado Cash withdrawals, and malicious code trialed on other wallets before going live. Freezes totaled about $2.7 billion by 00:30 UTC on October 30 (Tether: about 1.77 billion USDT; Circle: about $825 million; Arbitrum's Security Council moved about $30 million from an attacker wallet). Attackers sold USDT for ETH at more than 10% below market and still hold over 420,000 ETH and 18,270 BTC, about $2.4 billion no issuer can freeze, per TRM. Elliptic: some stolen funds went to the same wallet used in the earlier Bitget hack ($351 million); Chainalysis found Bitget proceeds mixed with Binance funds. TRM cites shared traits with the Bybit and KelpDAO (April 2026) hacks.

Timeline

  1. Preliminary report describes the fake video interview with a bogus recruiter; a timeline ties the case to North Korea, with 57 attacks blocked this year and five months of access.

  2. New details: the operation had been unfolding for months and, back in June, attackers had already infected another engineer's computer; the current intrusion used a fake company, two job interviews and a 'test assignment' that delivered malware with access to the internal network.

  3. Brazilian press coverage recaps the case: fake job interviews led to the billion-dollar theft at the exchange.

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  1. New reports detail the recruitment scam: outreach via a job site or LinkedIn, fake HR interviews and a task from a bogus CEO that infected the machine when run, undetected by antivirus.

  2. Report details that, from engineer B's compromised computer, attackers used the internal AI tool as a springboard to seize control of wallet DevOps engineer A and wallet software engineer C.

  3. TechCrunch notes that experts had warned for years about North Korea's patient hacking tactics, yet the exchange was still caught off-guard in the $6.3 billion heist.

  4. New detail on the $6.43B theft: the attacker used engineer B's compromised computer and an internal AI tool as a springboard to gain control of the Wallet DevOps Engineer and another Wallet Software Engineer.

  5. New details on the vector: an engineer searching for an AI tool installed the tampered Homebrew, and the fake interview coding test hid malware that evaded detection; Binance caught the first intrusion, but attackers learned who worked on its wallets.

  6. Binance's preliminary incident report details the theft timeline: an engineer infected in September via a fake hiring assignment, that computer plus an internal AI tool used on Oct 20 to compromise two more engineers, and stolen deployment credentials reaching the wallet-signing service on Oct 29.

  7. Binance's report details months of preparation: one engineer installed malware in June after a fake interview and had his device replaced, and a second downloaded a malicious test assignment in September after two interviews with a non-existent company.

  8. Researcher sums up Binance's published details: the theft was plain social engineering, not an AI attack exploiting a zero-day.

  9. Posts add attack-chain details: a malicious Google ad reportedly started the infection via a fake interview with a coding assignment, and attackers exploited Ethereum's EIP-7702 to control a hot wallet, contained in about four hours.

  10. Binance officially describes the theft as a sophisticated, multi-stage campaign, not a single isolated breach or simple phishing.

  11. Binance detailed the attack chain, with fake interviews, a trojanized Homebrew installer and abuse of an internal AI tool, and the theft amount rose to $6.43 billion.

  12. Binance CEO says a months-long campaign using fake recruitment interviews led to the $6.3 billion theft; North Korea denies responsibility.

  13. Security researcher Rachel Tobac highlights that the attack chain began with social engineering using an interview or recruitment pretext to trick the target into downloading malicious tools or handing over credentials.

  14. Binance confirms the initial vector: a fake job interview with a malicious code download, and says the FBI attributes the case to North Korea.

  15. Binance reveals the initial attack vector: a fake job interview infected an employee's computer before the AI tool hijack.

  16. Binance details that the exchange's own AI tool was used against internal wallets in the $6.3 billion theft.

  17. Binance says hackers used a fake job interview to hack an employee and gain access to its internal crypto wallets.

  18. North Korea officially denies involvement in the hack: Kim Yo Jong called the U.S. claim "preposterous nonsense" and suggested, without providing evidence, that the Trump administration itself could be responsible, pointing to the U.S. Strategic Bitcoin Reserve.

  19. Tracking cites 7,541 wallets under watch, with 3,849 still holding some funds and active movement through bridges.

  20. The FBI formally attributed the Binance attack to North Korea's TraderTraitor group, calling it the world's biggest cyber heist.

  21. FBI officially attributes the attack to North Korea's TraderTraitor and flags over 600 addresses used to launder the stolen funds.

  22. Binance reopens operations and users withdraw $4.649 billion in nine and a half hours; exchange says it has restored about 95% of the stolen assets.

  23. X post says Binance has fully covered the lost assets and has begun reopening withdrawals.

  24. BleepingComputer reports that the FBI publicly links the roughly $6.3 billion heist to North Korean hackers.

  25. FBI, Secret Service, and IRS-CI officially attribute the $6.43 billion theft to North Korea's TraderTraitor group.

  26. Technical analysis says the attackers compromised a hot wallet key and an internal signing service, and that ADA and NIGHT balances escaped because they sat in a Cardano multisig with a separate key.

  27. UK press calls it the biggest heist in history; Binance blocks customer withdrawals while racing to recover funds.

  28. Binance halted withdrawals after the attack; around $3 billion in stolen assets were reportedly frozen and the US Secret Service confirmed it is tracking the funds to recover them.

  29. A Binance spokesperson says customer funds were not affected and the money came from one of the exchange's own hot wallets.

  30. Social media report claims the attackers used a self-destruct mechanism that automatically wiped their tools and traces as they advanced.

  31. US senator says hackers took more than $6 billion in under 4 hours and calls it the biggest heist in history, using the case to push the Clarity Act, which would give crypto firms legal cover to freeze suspicious transactions at law enforcement's request.

  32. International press echoes the record theft of over $6 billion from Binance and reinforces the attribution to North Korean hackers.

  33. Reports on the case say the roughly $6.36 billion theft, attributed to North Korea, was completed in about 20 minutes.

  34. Binance co-CEO admits in a video the company should have invested more in security, describes a very complex multi-layered composite attack and promises a full technical report; CEO Richard Teng confirms the EIP-7702 delegation behind the attack did not pass through normal approval controls and was

  35. New reports say the intrusion started from an engineer's computer, with funds drained in roughly 20 minutes; about $3 billion was frozen with Tether and Circle's help and Binance expects to resume withdrawals.

  36. Blockchain analysis firms and Binance froze roughly half of the stolen funds; the exchange will cover all losses.

  37. Chainalysis and Pangolin Intelligence now attribute the attack to North Korea with high confidence; entry reportedly came via an engineer's computer.

  38. Social media post reiterates attribution of the attack to North Korea, in line with TRM Labs' earlier analysis.

  39. TechCrunch reports the intrusion is suspected to have started by compromising a Binance employee's laptop, enabling the multi-billion theft.

  40. Social media post repeats the attribution of the $6 billion-plus Binance theft to North Korean hackers.

  41. Chainalysis and Elliptic also attribute the theft to North Korea with high confidence; zachxbt traced the funds to the same address as last month's Bitget hack via THORChain, linking both hauls to the TraderTraitor group.

  42. Binance says the attack began on a DevOps engineer's laptop and the investigation uncovered additional points of breach; withdrawals remain paused.

  43. TRM Labs links the theft to North Korea's TraderTraitor group with high confidence; wallets were drained across 10 blockchains in about 20 minutes.

  44. Binance halted withdrawals after the theft and pledged to cover customer losses; analysts pin the attack on North Korea.

  45. CZ publicly addressed the $6.3 billion theft and cited Binance's SpaceX position worth over $1 billion; reports reiterate movement across ten blockchains.

  46. Infosecurity Magazine covers the record theft, reiterating attribution to a North Korean hacking unit, with no new facts beyond what was already recorded.

  47. New reports detail the drain took about 20 minutes, with roughly $3.79 billion in Ethereum and $1.47 billion in Bitcoin; TRM Labs ties TraderTraitor to the Lazarus Group. Mainstream outlets such as GloboNews now cover the case.

Sources 27 sources

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