Musk comments on the Binance hacking incident: Everyday is Zeroday

Elon Musk retweeted reports related to the Binance hacking incident and commented, "Everyday is Zeroday." A zero-day vulnerability is a technical term in the field of cybersecurity, referring to a security flaw in software, systems, or hardware for which developers or vendors have not yet provided a fix, and attackers may exploit this vulnerability to launch attacks.

It is called zero-day because when the vendor discovers or learns about the vulnerability, there is no time left for a preemptive fix (0 days).