Email Gateway Security

ESGs – Even in a Cloud first world an Email Security Gateway is still an essential security layer

With the number of email born threats, Enterprise strength Email Filtering via gateway solutions is considered almost necessary in today’s ever changing environment.

Did you know that email continues to represent the number 1 attack vector for malicious actors?

Did you know, that half of all emails sent, are now SPAM?

Email provides an easy and mass market approach to delivering opportunistic attacks.

It also provides an easy entry for more targeted and sophisticated attacks against individuals within an organisation.
Email Gateway Security is considered an essential within Secure-ISS’s Defence in Depth security strategy.

Security - Essential Posture
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What are the essential functions of an ESG?

Essential components within ESG solutions include basic and advanced threat defence and post delivery protection mechanisms. These features include:

  • Enterprise strength Email Filtering for Malware and spam;
  • Co-operative Spam Checksums
  • Signatures and Spam Scoring
  • Whitelists and Blacklists
  • Real-Time IP Blacklists
  • Directory Harvest Attack Prevention
  • Real-Time URL Blacklists
  • URL to IP Mapping and Blacklists
  • URL Categorisation
  • Domain Age
  • Bayesian Filtering
  • Challenge/Response Systems
  • Optical Character Recognition (OCR
  • Spam tagging
  • Quarantining with management for administrator and end userEmail
  • Encryption
  • DLP Protection
  • Web based administration

Cloud Email and ESGs

With some 80% of organisations expected to be on a Cloud based email service by 2021 protection from a third party vendor is critical.

Microsoft O365 inclusions and options

Microsoft Office 365 includes Exchange Online Protection (EOP) with all O365 plans. EOP includes both an anti-spam and signature-based anti-malware service.

Microsoft offers Advanced Threat Protection (ATP) to address advanced attachment and URL-based threats, DLP and email encryption (enabling an organization to monitor, encrypt or block messages based on policy) in some enterprise packages and as stand-alone offerings.

With Microsoft being a generalist technology provider (albeit a very good one!) and not being a specialist security vendor, the protection provided by these offerings may not be sufficient for all organisations.

Our recommendation…

Although the Cloud based email Services offer a level of protection, often these are basic levels of protection compared to the functionality and flexibility provided by a dedicated solution. Secure-ISS recommends that organisations consider supplementing their O365 or other cloud email services with a dedicated ESG solution.

How can Secure-ISS help?

We can assist secure your business reduce the costs and the associated complexity of your ESG deployments.

Secure-ISS provide a number of consulting and implementation services in relation to ESGs. Including flexible deployment options:

  • On-premises
  • Into your Cloud
  • As a SaaS/ Cloud Delivered solution

Secure-ISS assist businesses of all sizes with fully managed SaaS solution for the smallest of businesses, through to the deployment of 10,000+ mailbox solutions for enterprise and government clients.

Essential Posture Service Indicator

Email Gateway Security is part of our 'Security Services Division' solution.

Arrange a consultation about Email Gateway Security services


To discuss your requirements and make an appointment simply phone.

1300 769 460

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