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directory harvest attack
(redirected from Directory harvesting)

   Also found in: Wikipedia 0.01 sec.
directory harvest attack
A method spammers use to obtain valid e-mail addresses. Random names are generated and sent out to valid domains. If an undeliverable message does not return, the name is assumed to be genuine. Random names are easy to generate from any electronic phone book because many organizations standardize on conventions such as first name letter and last name or first name and last name letter; for example, John Doe could be jdoe@xyz.com or johnd@xyz.com.


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These security capabilities conceal business VoIP systems and simultaneously harden them to repel directory harvesting attacks, input validation hacks (buffer overflows), and other VoIP threats.
The new MXtreme Intercept Engine takes an innovative approach to blocking more than 90% of unwanted inbound email, including spam, viruses, denial-of-service, directory harvesting, phishing and flooding attacks at the email boundary, before they enter the network.
The company has about 500 customers and filters 120 million mails per day, so it can get a good idea about where large-scale virus, spam and directory harvesting attacks are originating.
 
 
 
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