Kerberoasting in 2025

Kerberoasting in 2025

Summary

In this episode of the Blue Security Podcast, hosts Andy Jaw and Adam Brewer delve into the topic of Kerberosting, a known attack method that exploits weaknesses in the Kerberos authentication protocol, particularly focusing on the vulnerabilities associated with RC4 encryption. They discuss a recent letter from Senator Ron Wyden addressing the implications of these vulnerabilities in the context of a significant ransomware breach in the healthcare sector. The conversation covers the basics of RC4 encryption, the mechanics of Kerberosting attacks, and the necessary mitigations organizations should implement to protect against these threats. Additionally, they highlight Microsoft's Secure Future Initiative, which aims to prioritize security in its products and services, and the ongoing challenges of balancing security with legacy compatibility. The episode concludes with actionable takeaways for listeners to enhance their cybersecurity posture.----------------------------------------------------

YouTube Video Link: ⁠⁠⁠

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Documentation:

https://arstechnica.com/security/2025/09/senator-blasts-microsoft-for-making-default-windows-vulnerable-to-kerberoasting/

https://www.microsoft.com/en-us/security/blog/2024/10/11/microsofts-guidance-to-help-mitigate-kerberoasting/

https://learn.microsoft.com/en-us/security-updates/SecurityAdvisories/2013/2868725

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Andy Jaw

Bluesky: https://bsky.app/profile/ajawzero.com

LinkedIn: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.linkedin.com/in/andyjaw/

Email: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠andy@bluesecuritypod.com⁠

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Adam Brewer

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Episoder(268)

Ransomware Protection - Part 2 - EDR, Patching, and Pentesting

Ransomware Protection - Part 2 - EDR, Patching, and Pentesting

This week, Adam and Andy continue the conversation on techniques and tools to protect your organization from ransomware. They dive into EDR solutions, patching and vulnerability assessment management, and pentesting. Documentation: Maersk, me & notPetya: https://gvnshtn.com/maersk-me-notpetya/ The Untold Story of NotPetya, the Most Devastating Cyberattack in History: https://www.wired.com/story/notpetya-cyberattack-ukraine-russia-code-crashed-the-world/ Andy Jaw Twitter: @ajawzero LinkedIn: https://www.linkedin.com/in/andyjaw/ Adam Brewer Twitter: @ajbrewer LinkedIn: https://www.linkedin.com/in/adamjbrewer/

12 Okt 202032min

Ransomware Protection - Part 1 - Soft Skills and Endpoint Protection

Ransomware Protection - Part 1 - Soft Skills and Endpoint Protection

Due to the recent ransomware attacks, Adam and Andy use this episode to kick off a series on how to protect your company from ransomware. We started with how security professionals need to have soft skills in order to be successful at any organization. We followed up with a deep dive on why we believe Microsoft Defender for Endpoint is the most cost effective solution you can deploy. Documentation: Microsoft Defender in a Sandbox: https://www.microsoft.com/security/blog/2018/10/26/windows-defender-antivirus-can-now-run-in-a-sandbox/ Andy Jaw Twitter: @ajawzero LinkedIn: https://www.linkedin.com/in/andyjaw/ Adam Brewer Twitter: @ajbrewer LinkedIn: https://www.linkedin.com/in/adamjbrewer/

5 Okt 202033min

Enabled MFA!

Enabled MFA!

In this episode, Adam and Andy talk about why if you have not enabled MFA for your identity provider (IDP), this should be your top priority today. They also talk about steps for implementation and their thoughts on user documentation. Documentation: Zerologon Vulnerability https://www.secura.com/blog/zero-logon Andy Jaw Twitter: @ajawzero LinkedIn: https://www.linkedin.com/in/andyjaw/ Adam Brewer Twitter: @ajbrewer LinkedIn: https://www.linkedin.com/in/adamjbrewer/

28 Sep 202030min

Geo-restricting IP addresses, Password policies, Defense against password spray attacks

Geo-restricting IP addresses, Password policies, Defense against password spray attacks

In this first episode, Adam and Andy discuss whether geo-restricting IP addressing is considered "good" security. They also discuss Azure AD password protection as a method to protect against password spraying attacks. Documentation: Overview on Azure AD password protection: https://techcommunity.microsoft.com/t5/azure-active-directory-identity/azure-ad-password-protection-is-now-generally-available/ba-p/377487 How to deploy Azure AD protection: https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-password-ban-bad-on-premises-deploy Andy Jaw Twitter: @ajawzero LinkedIn: https://www.linkedin.com/in/andyjaw/ Adam Brewer Twitter: @ajbrewer LinkedIn: https://www.linkedin.com/in/adamjbrewer/

21 Sep 202031min

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