Several proprietary trading firms have been targeted by a coordinated cyberattack involving phishing and data leaks, affecting both large and smaller firms. The attacks appear to originate from the same malicious hacking group, leading to compromised customer information and widespread concern about security vulnerabilities. Users of these firms are strongly advised to change their passwords immediately and consider changing associated email addresses, as leaked customer lists are reportedly being circulated. Google has issued an urgent alert warning users to update their passwords promptly to mitigate the risk of further hacking incidents.