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Posts Tagged ‘transmission’

How Can You Tell if an Email Was Transmitted Using TLS Encryption?

Monday, August 19th, 2013

Frequently, we are asked to verify if an email that someone sent or received was encrypted using SMTP TLS while being transmitted over the internet.  For example, banks, health care organizations under HIPAA, and other security-aware institutions have a requirement that email be secured at least by TLS encryption from sender to recipient.

Email should always be transmitted with this basic level of email encryption ensure that the email message content cannot be eavesdropped upon.  This check, to see if a message was sent securely, is fairly easy to do by looking the the raw headers of the email message in question.  However, it requires some knowledge and experience.  It is actually easier to tell if a recipient’s server supports TLS than to tell if a particular message was securely transmitted.

To see how to analyze a message for its transmission security, we will look at an example email message sent from Hotmail to LuxSci, and see that Hotmail did not use TLS when sending this message.  Hotmail is not a good provider to use when security or privacy are required.

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Ensuring all data is encrypted at rest with LuxSci

Friday, May 10th, 2013

Email and other data is either being “transmitted” or “processed” or is “at rest.”  I.e., it is moving from one computer to another, or it is stored/at rest on a computer, or it is preparing to be transmitted or stored.

While most types of compliance regulation, such as HIPAA, specifically require that data be transmitted securely, not all regulations require that data be stored in an encrypted form while at rest.  I.e., HIPAA does not require at-rest encryption, though it is recommended to decrease risk and potential liability in some situations

Having your email and other data encrypted while at rest can potentially increase the security of that data, even if that level of security is not explicitly required.  As a result, many LuxSci customers have asked about how to ensure that all of their email and other data is encrypted while at rest.

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