What types of content shouldn’t be sent by email?

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Email
Email security
I'm been doing some research on email security and I've realized that while emails are one of the main ways of business communication, sometimes it's not entirely secure.

Does it make sense to use emails for these examples:
  • E-Tickets
  • Software license files

So from a practical point of view, how insecure is it to use email for transferring potentially sensitive information?

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  • Kevin Beaver
    Email is often wide open for exposure. Whether NSA weasels are peeking into an encrypted communications stream such as HTTPS or SMTPS or someone with nothing better to do at a hotel or local coffee shop who's peeking into unencrypted SMTP or POP3 sessions, anything is fair game.

    At the end of the day, email encryption matters very little given the lackadaisical attitude so many people (execs, users, and even IT pros) have toward protecting mobile devices and encrypting laptop drives like I cover here.

    Still, you're going to get much more bang for your buck by protecting email at rest since that's where the real vulnerability is.

    So, ask yourself: what's the business risk and how much risk is management willing to accept?
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