Binance Chief Security Officer Jimmy Su: In July he described a fake coding test intrusion method
According to Cointelegraph, months before Binance suffered a $630 million loss in a hacker attack, its Chief Security Officer Jimmy Su said in an interview in July that fake coding tests could be used to break into employees’ devices, a method highly similar to the entry tactic later used by the attackers.
Su said at the time that attackers could tailor fake job opportunities for employees and trick them into running code as part of a technical assessment. Once executed, the device would be compromised, allowing the attackers to steal credentials and further infiltrate the network. He also pointed out that the steps of such technical assessments are each legal on their own, so many antivirus programs cannot detect and flag them.
According to Binance’s initial investigation, in September a software engineer downloaded malicious coding assignments to a work computer during a fake job interview, and that compromise became part of the multi-stage attack that ultimately led to the October theft.
Original source:
Title: Binance Security Chief Warned of Hack Tactic Before $6.3B Theft
Publisher: Cointelegraph
Publication date: 2026-11-12
URL: cointelegraph.com/news/binance-cso-foreshadowed-6b-hack-tactic-months-before-attack
Source type: crypto media report (based on an interview with the CSO)
Verification status: The original article was read, confirming that the method Su described in the July interview was consistent with the later attack entry point, and the quote had direct basis
Supporting content: Su described in July that fake job opportunities and coding tests could compromise devices and steal credentials; the steps were individually legal, making them hard for antivirus software to detect; this was highly similar to the attack entry point in which a software engineer downloaded malicious coding assignments in September
ABAB AI Insight
Historically, social engineering attacks against employees in the crypto industry often use fake recruitment or coding tests to establish an initial foothold. Su already identified such a method as a high-priority internal risk in his July interview, showing that Binance had recognized the feasibility of this vector before the attack occurred.
Along the capital path, attackers induce employees to run code on work devices through tailored fake job opportunities, achieving device compromise and credential theft, and then moving laterally into wallet-related systems. This path bypasses traditional direct detection of malicious files by relying on the apparent legitimacy of the steps themselves.
Compared with peers, other exchanges and technology companies also face similar recruitment-related phishing and malicious assignment risks. In Binance’s case, the strong overlap between the CSO’s prior description and the actual post-incident entry point highlights the recurrence of a known threat vector in a real attack.
Structurally, Cointelegraph pointed out that Su’s related warning did not appear in the original July report, but gained new meaning afterward. This reflects the security chief’s prior awareness of a specific tactic and does not automatically translate into an immediate block on related employee behavior; whether subsequent defenses adjusted the rules for external technical assessments on work devices still depends on internal company implementation.
ABAB News · Law of cognition
When a tactic described in advance overlaps with the actual post-incident entry point, it shows the vector was identified, but not necessarily blocked.
The technical assessment steps are individually legal, allowing malicious payloads to be embedded in a normal process and evade antivirus detection.
Running external coding assignments on work devices constitutes the initial path from the employee side into core systems.