If a hacker can mine/collect email addresses from our company he/she can send malware / phishing attacks to these people. But, who are these people? And what other sensitive information are we leaking from a particular domain?
Using BiDiBLAH, you can easily find out what email addresses can be allocated from the internet, as well as which DNS names are associated with your domain. Assuming your domain is called supercorp123.com, BiDiBLAH can generate the following within 5 minutes