The post Vitalik Buterin says privacy is “hygiene” after a major data leak at JPMorgan, Citi, and Morgan Stanley appeared com. Ethereum creator Vitalik Buterin said, “Privacy is not a feature. Privacy is hygiene,” after hackers infiltrated several U. S. banks and stole client information. Reports indicate that hackers targeted JPMorgan Chase, Citi, and Morgan Stanley during a cyberattack on mortgage technology firm SitusAMC. The breach highlighted the vulnerability of sensitive data in banks and the ease with which large systems can expose customer information. Banks face risk as stolen data exposes sensitive client records SitusAMC was the victim of a cyberattack on November 12, 2025, that exposed large amounts of sensitive corporate information, including accounting records and legal documents. In this instance, customer data may have been compromised. The company announced that although the breach has been stopped, its systems are currently operational, and it has notified federal authorities of the incident. Notably, no encrypting malware (such as ransomware) was used, indicating that cybercriminals attempted to evade detection. Some of the banks that risk being affected are JPMorgan Chase, Citi, and Morgan Stanley, according to multiple reports. The full extent of the leaked data remains to be seen. Still, the threat that one third-party vendor’s breach might affect multiple Wall Street banking giants underscores an emerging threat to supply chains that can be exploited through cyberattacks. Hackers infiltrated the security systems of SitusAMC and stole client information linked to major banks. They stole accounting papers, legal agreements, and other sensitive client and customer information, so officials at the company are investigating the extent of the theft and its potential use in fraudulent activities. Experts say that storing large amounts of personal and business information in one place is very risky, as hackers can use stolen information for illegal activities that damage the reputations of both companies and their customers. JPMorgan Chase, Citi, and Morgan Stanley were all notified that their client.