7MS #472: Interview with Christopher Fielder
7 Minute Security16 Kesä 2021

7MS #472: Interview with Christopher Fielder

Today our good pal Christopher Fielder from Arctic Wolf is back for an interview three-peat! He joins Joe "The Machine" Skeen (a.k.a. Gh0sthax) and I to talk about all things ransomware, including:

  • How the Colonial Pipeline incident may have started from a weak VPN cred with no MFA. Silver lining (?) - they got some of the $ back.

  • Was the federal government's response good enough? What should the government be doing to better handle and manage ransomware?

    • Common ways ransomware gets in our environments, and some ways to NOT get ransomware'd:
      • Use 2FA (make sure that all accounts are using it!)
      • Consider having (if possible) your AD user scheme be something like chi-user4920394 instead of Joe.President
      • Have users that haven't logged in for X days get automatically locked out
      • Train your users - consider Arctic Wolf's managed security awareness offering
      • Detect early signs of compromise like Kerberoasting
      • Lock down your DNS egress to only specific servers so that it doesn't run "wide open"
      • Leverage good threat intel

Jaksot(703)

7MS #7: External Vulnerabilities that Byte (audio)

7MS #7: External Vulnerabilities that Byte (audio)

Episode lucky #7!!! In this episode I talk about external network vulnerabilities that we see in many of our assessments – some of which are pretty easy to clear up. Download: Episode 7: External Vulnerabilities that Byte (audio) Show notes: RC4 – a risk that we find just about anywhere SSL is used, but in…

15 Maalis 20147min

7MS #6: Fun Firewall Rules – part 2 (audio)

7MS #6: Fun Firewall Rules – part 2 (audio)

In this episode I continue talking about some basic firewall rules that many organizations don't have in place. Download: Episode 6: Fun Firewall Rules – part 2 (audio) Show notes: Limit outbound DNS requests to just the ISP servers (or whatever external servers you use). Anytime a firewall rule is changed, perform a vulnerability scan…

8 Maalis 20147min

7MS #5: Fun Firewall Rules – part 1 (audio)

7MS #5: Fun Firewall Rules – part 1 (audio)

In this episode I talk about some basic firewall rules that many organizations don't have in place. Download: Episode 5: Fun Firewall Rules – part 1 (audio) Show notes: Block outbound port TCP 25 for all devices except your mail server(s). If you use a third party mail filter like Postini or Securence, ensure that…

1 Maalis 20147min

7MS #4: Patch Strategies: Part Deux (audio)

7MS #4: Patch Strategies: Part Deux (audio)

In this episode I continue talking about some dos and donts of patch strategies – this time talking about enterprise level gear. Download: Episode 4: Patch Strategies: Part Deux (audio) Show notes: There are often two trains of thought in regards to enterprise gear patching (like routers, switches, firewalls). 1. If it ain't broke, don't…

22 Helmi 20146min

7MS #3: Patch Strategies: Part 1 (audio)

7MS #3: Patch Strategies: Part 1 (audio)

In this episode I talk about some trends (and problems) we're seeing on the patching front – specifically OS and third-party apps. Download: Episode 3: Patch Strategies: Part 1 (audio) Show notes: Most organizations have the Microsoft side of the house patched well – but the third party apps (Java/Flash/Reader/etc.)? Not so much…but that's just…

13 Helmi 20147min

7MS #2: The Importance of Logging and Alerting! (audio)

7MS #2: The Importance of Logging and Alerting! (audio)

In this episode I talk about how a client of ours learned a hard lesson: that the lack of logging/alerting makes for a pretty miserable investigation after they were breached. Download: Episode 2: The Importance of Logging and Alerting! (audio) Show notes: Public-facing terminal servers without 2FA basically have a sign on their back that…

1 Helmi 20147min

7MS #1: Epic Introduction! (audio)

7MS #1: Epic Introduction! (audio)

In this episode, I talk about the inspiration behind the 7MS podcast and my vision for it going forward. (Admittedly, my ulterior motive is to use this intro episode to figure out how in the heck to get this podcast submitted and visible on iTunes :-). Download Episode 1: Epic Introduction to 7MS (MP3) I'll…

1 Helmi 20147min

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