One of the first best practices that organizations should put into effect is implementing a secure email gateway. An email gateway scans and processes all incoming and outgoing email and makes sure that threats are not allowed in. Because attacks are increasingly sophisticated, standard security measures, such as blocking known bad file attachments, are no longer effective. A better solution is to deploy a secure email gateway that uses a multi-layered approach.
It’s also important to deploy an automated email encryption solution as a best practice. This solution should be able to analyze all outbound email traffic to determine whether the material is sensitive. If the content is sensitive, it needs to be encrypted before it is emailed to the intended recipient. This will prevent attackers from viewing emails, even if they were to intercept them.
Training employees on appropriate email usage and knowing what is a good and bad email is also an important best practice for email security. Users may receive a malicious email that slips through the secure email gateway, so it’s critical that they understand what to look for. Most often they are exposed to phishing attacks, which have telltale signs. Training helps employees spot and report on these types of emails.