What is an attack on the directory harvest?

Attacking the Harvest Directory or DHA is a strategy focused on collecting or harvesting e-mail addresses without the consent of the user of this address. While the methods differ, one of the most common approaches is to send mass e -mail to a wide range of addresses that are very likely to be valid. Servers usually respond to an automated message if the e-mail address is not valid, and warns Harvester whose addresses are valid and which are not.

In most cases, software programs are used to create banks of possible e-mail addresses that are directed through servers operated by a specific e-mail client. For example, Harvester may target free e -mail services and use software to try to create millions of possible valid e -mail addresses currently using one or more of these services. Software allows Harvester to set instructions for creating addresses such as entering the total number of fromNaků in the each address or inclusion of a series of letters or numbers in this address.

When the listing is complete, the attack on the directory harvest is triggered by mass sending an e-mail to each possible address contained in this list. Target servers will respond with some type of message if the e-mail address is invalid. This message can declare unharmeable by e-mail or include verbiage that indicates that the address does not exist at all. Any addresses that the server is not recognized for any reason is cleaned of the statement and leaves only those that are obviously active and are able to receive additional emails over time.

The idea of ​​attacking a directory harvest is to create e-mail statements that can be used for internet advertising and promotion. Lists that are made using DHA are considered to be unskilled lists, which means that the owners of these e-mails l did not provide enabledto obtain business applications. As a result, the use of a list created using an attack on the directory harvest allows an advertiser or agent to join this advertiser in spam or transfer of unsolicited e-mails.

Advertisers using this method rarely expect to experience a huge percentage of responses to their mass e -mail requests. The relatively low cost of creating these lists and sending uniform harassment to each address containing in these lists means that although not more than one or two percent who receive spam messages, they decide to make a purchase, the strategy is profitable.

Thanks to the use of Anti-SPAM software, many SPAM emails are sent as a result of direct harvest attack to the spam folder rather than in the end user box. Some providers also have established mechanisms to refuse the transmission of bulk mail that seem to be focused on achieving a subgroup of customers using a specific e-mail platformy or service. As a result, it was necessary for anyone who used the attack on the directory harvest to plan very carefully in an effort to escape the service provider and still appeared with a list of verified and active e-mail addresses.