[转载]Efficient Directory Harvest Attacks and Countermeasures

原始出处：http://ijns.nchu.edu.tw/contents ... -v5-n3-p264-273.pdf
信息来源：邪恶八进制信息安全团队（www.eviloctal.com）

The goal of the DHA attacker is to identify valid e-mail addresses in a system, which addresses can be sold or used for spamming purposes.To achieve the goal the attacker tries numerous different addresses and selects valid addresses according to the response of the e-mail server. We elaborated a method for optimizing the wordlist size used by the attacker under limited resources.