Elon Musk’s reaction to the $6.3 billion Binance hack: “Everyday is Zeroday”

Elon Musk’s first public response to the $6.3 billion Binance hack was a short cybersecurity warning: “Everyday is Zeroday.” For anyone running or servicing high-risk payments, the point is obvious enough — if attackers can move faster than your controls, the rest is just post-mortem language.

1. On Thursday, October 29, Binance was hit by what the source describes as a massive $6.3 billion hack. Musk, the CEO of Tesla (NASDAQ: TSLA) and SpaceX (NASDAQ: SPCX), reacted on X with a terse line about constant vigilance in cybersecurity.
2. In cybersecurity terms, a zero-day is a previously unknown firmware, hardware, or software vulnerability that attackers can exploit before developers have any time to patch it. The source says the hackers were allegedly able to inject malicious code that was tested earlier the same day, then used that code to take control of Binance’s hot wallets, according to a TRM analysis cited by Finbold on October 30.
3. Musk later mocked a separate X user who compared Binance’s statement that user funds are safe with Sam Bankman-Fried’s reassurances during the collapse of FTX. Changpeng Zhao (CZ) did not like the implication that Binance’s stake in SpaceX could be used to cover losses, though he later said he meant only that Binance had enough funds to withstand the incident, not that a SPCX stock sale was on the table.
4. The source frames the warning as timely because digital asset theft accelerated in Q3 to $1.17 billion, up nearly $200 billion from the Q1 and Q2 total, and says the Binance attack alone is 180% bigger than the total for the first nine months of 2026. For PSPs, that is a reminder that treasury exposure, hot wallet controls, and incident response are not back-office trivia.
5. The article also notes that digital asset firms are not the only targets: Revolut was hit by a phishing attack in September that affected the data of some of its more affluent clients. It adds that AI advances and expected breakthroughs in quantum computing could worsen the problem, with some estimates putting Bitcoin (BTC) at its “doomsday” as soon as March 2028.