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Tag: kali

Implementing SPF, DKIM, and DMARC

Implementing SPF, DKIM, and DMARC

If you made it here, you might not be interested in the why’s of implementing the holy trinity – SPF, DKIM, and DMARC – of anti-email spoofing. However, if you’re still uncertain whether you should or shouldn’t, just do it! With the guide below, you’ll see it isn’t all that difficult and when used together, they provide great benefits like brand protection, reducing a phishing attack vector, less chance of your legitimate marketing emails ending up in spam, etc. It also…

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Securing Open RDP Ports

Securing Open RDP Ports

Mr. Mackey says it best — Open RDP ports on the internet are bad… mmmmkay. When you are architecting an environment, you should avoid them like the plague. Even on an internal network, you should avoid them. Otherwise, you are just asking for problems at some point whether it is someone pounding away looking for a username/password combination or a remote vulnerability in the service. Compromised servers (via RDP) are mainstays for criminal jump points and some are even monetizing…

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Hacking HL7 Data Interfaces in Medical Environments: Attacking and Defending the Achille’s Heel of Healthcare

Hacking HL7 Data Interfaces in Medical Environments: Attacking and Defending the Achille’s Heel of Healthcare

This security research paper is the second of two examining the HL7 messaging standard, which is arguably the most fundamental flaw in healthcare IT. HL7 is used extensively for system-to-system communications and is in nearly every healthcare facility worldwide. The first paper is an overview of what can be done with stolen medical data, what HL7 is, as well as potential dangers inherent to HL7. The second paper moves beyond theory and is an in-depth, technical discussion on ways to…

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HL7 Data Interfaces in Medical Environments: Understanding the Fundamental Flaw in Healthcare

HL7 Data Interfaces in Medical Environments: Understanding the Fundamental Flaw in Healthcare

This security research paper is the first of two examining the HL7 messaging standard, which is arguably the most fundamental flaw in healthcare IT. HL7 is used extensively for system-to-system communications and is in nearly every healthcare facility worldwide. The first paper is an overview of what can be done with stolen medical data, what HL7 is, as well as potential dangers inherent to HL7. The second paper moves beyond theory and is an in-depth, technical discussion on ways to…

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Why Phone Numbers Make Horrible WiFi Passwords

Why Phone Numbers Make Horrible WiFi Passwords

Aside from discussing the most obvious item (in the title), you also have the issue of why your average ISP isn’t helping out the security of the average consumer. In addition, the underlying theme here is that installation and implementation matters. You can have the best security/encryption on the planet and someone else can trash it in short order simply because they implement it wrong. Also note that while I won’t be publicly naming them, I will instead provide my emails…

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Stop CEO/CFO Domain Spear Phishing

Stop CEO/CFO Domain Spear Phishing

Pretty bold title… While it is nearly impossible to stop any motivated attacker/phisher, I also believe in doing every bit you can to improve your environment and these steps will go a long way to helping your situation. I will talk about two primary ways to put an end to CEO/CFO spear phishing. Realize upfront that you should not do one step without the other. I will also talk about the ins and outs of these techniques as well as some of…

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