Securing the email infrastructure consists of more than just eliminating unwanted content. Stopping dangerous network-level traffic such as Directory Harvest attacks (DHA) and Denial of Service attacks (DoS) is a critical component in ensuring maximum protection. Organizations left exposed to such threats are susceptible to degraded availability, downtime, and even data theft. Furthermore, as unexpected downtime is inevitable for most organizations, disaster recovery is key to ensuring data integrity. The Email Security Service combines industry leading technology and expertise to provide rock-solid protection from these illusive threats.

Directory Harvest Attack Protection
A Directory Harvest attack is a method to learn valid email addresses used by spammers. Such an attack works by inundating your mail server with thousands or millions of blank emails to random addresses. The addresses that your mail server accepts are noted as valid, compiled in a list, and distributed to spammers. Thus not only do DHA burden your network, they can also expose your email users and make them more susceptible to spam attacks.

The Email Security Service combines attack pattern intelligence and directory data to eradicate DHA attempts before they even reach your network's edge. With this defense, attackers are unable to acquire information about your organization's users. Preventing Directory Harvest attacks goes a long way in keeping your organization's data private, as well as preventing future outbreaks of junk mail.

Denial of Service Attack Protection
Denial of Service attacks consist of an individual or group of malicious users whose sole intent is to flood your network with junk data, thus shutting it down entirely. While DoS attacks used to be mainly planned and targeted attacks against specific organizations, with the growing propagation of worm viruses and popularity of broadband, DoS attacks are increasing in both volume and effectiveness.

To combat these assaults, we utilize tarpitting technology to throttle the life out of DoS attackers. It works by carefully monitoring and tracking the volume of traffic coming in from each individual system. When an abnormal spike in traffic is detected, we reduce the rate at which data is allowed to flow in from the potential attacker. Continued flooding causes the attacker's traffic to be ignored until the assault is discontinued. The Email Security Service effectively neutralizes the threat of DoS attacks to ensure maximum uptime and stability for your email infrastructure.

With the Deerfield Email Security Service, organizations are able evade the threat of data loss and lowered productivity associated with DHA and, DoS