Archive for September, 2009

Protect your computer from DHAs

A directory harvest attack is an action that involves seeking the valid e-mail addresses that are connected to an e-mail server and adding them to a spam database. Harvesting e-mail addresses can be done either by sending messages to different possible usernames which are generated by randomly combining letters and numbers. Another method is sending messages to likely usernames like initials followed by common surnames. If the e-mail account is invalid, the server will reply ‘not found’. However if a valid e-mail account receives the message, the message doesn’t return thus the DHA program retains the e-mail address for future spamming. Spam filters are internet applications that could counteract this; consider downloading them into your computer.

September 21 2009 | Application and Download | No Comments »