Yes it does! By concealing your real e-mail address which quite often has some personal information in it such as first.lastname@gmail.com. With that small amount of information someone can start building a profile on you for identity theft or other malicious social engineering attacks. For example, by signing up to multiple services using the same email address, if someone were to discover your email address they may attempt to impersonate you to your banking service and gain access to your accounts. By using a unique Polycred email alias on each website you sign up to you can be confident that attackers will not be successful in their efforts. Another real world example where Polycred protects your privacy is in the scenario of data leaks from services. Quite often the email addresses leaked specifically from financial services will become targets of phishing email scams and attackers will send you fraudulent emails attempting to steal your login information for other websites and services, or your financial data. By using Polycred, if your email alias is ever leaked in one of these scenarios, you can simply delete that alias and prevent all phishing scams from reaching you.