Introduction
In order to struggle spam, companies exploit spam traps for finding out and blocking spammers. A spam trap is a destination, which is used to lure spammer attacks. One example of spam traps is an email address, which is not used, but incoming traffic to this address is monitored. A lot of spam traps exist in the Internet expanses; they are generally managed by big anti-spam organizations (SURBL, Spamhaud), security companies (McAfee, TrendMicro), Internet Service Providers and corporate email server. The possible types of spam traps are typos (mistyped email addresses), expired addresses (not used for long time), purchased ( ...