However, I am unhappy because it looks like these exchanges may be selling customers' data to third parties. Do they really do that? If they don't, how do these hackers know that I have a Coinbase account?
Email and other forms of connecting with users online have become the most common means of scamming these days, as one just needs to be very careful about what they click on, especially in this type of email. The most risky part right now is no longer about the platform where users register with their details and sell customer data; now there are many tools that have been developed to scrape out specified data from targeted websites. So we never can be careful enough on places that we register with our email; instead, we can just avoid the kind of emails we even open. Sometimes it's just better to block the email by just reading the heading or subject of the mail, especially when one is not expecting any mail of that nature.
