Cloud based e-mail compromised

5 pts.
Tags:
E-mail
Security
A financial company I deal with just made me aware of an e-mail breach. They sent an encrypted email to one of their customers using a prominent cloud based e-mail service. The legitimate e-mail gave the customer account details to make a wire transfer too.  Moments later the customer received a bogus e-mail telling them that they needed to wire the money to a different account. The customer caught this because the e-mail address was different. We need to determine where the breach occurred (customer side or hosted e-mail side).  Not sure where to start.

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  • Kevin Beaver
    There are a lot of variables in an incident like this. If an encrypted email was sent yet the compromise still occurred then something must have gone awry on one of the hosts involved. You might consider checking for malware using multiple tools for starters. Best of luck!
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