Everyday Defender

In this episode Chris takes a look at Exchange-attribute Source of Authority (SOA) transfer - could this finally be the answer to removing that last Exchange server we've all been waiting for? Koos has spent years deep in Microsoft Sentinel, and a big chunk of that has been log ingestion and keeping the ingestion bill under control: getting the right data in, keeping the noise out. He promised thi...

Live and face-to-face again, this time recorded from Experts Live Netherlands. Chris previews his EL:NL session on practical SecOps for Microsoft 365: how to automate the boring-but-critical parts of M365 security operations, continuously assess tenant posture, detect configuration drift, and respond to common issues using native Microsoft tools you already own. Koos recently went on a hunt for a...

In this episode Chris covers some common Intune deployment mistakes he's come across while working with various customer environments. Koos has become a full-time Claude (Code) user over the past months and wants to share why he's blown away. A few real-world stories where an AI agent saved the day. Or actually MULTIPLE days worth of work. ;). There's been a lot of talk lately about different mode...

In this episode Koos discusses the Odido data breach in The Netherlands by hacker group Shinyhunters, one of the largest public data leaks in Dutch history. Touching on vishing, misconfigurations, and the importance of blocking Device Code Flow. Chris was inspired by a fellow MVP to take a look at common AD security mistakes and provides some detail on how to look for these in your environment. Fu...

In this episode, Chris take a look at PowerShell modules and how managing M365 and Entra ID has changed over the years. And Koos likes to re-visit Passkeys. This is not new and we covered it earlier in our very first episode in December of 2024. But quite a few things have changed since then and he believes now is the time to start onboarding at scale. Full show notes available on our blog: https:...

In this episode, Chris explores Agent 365 while Koos takes another look at Security Copilot. Since our last episode, several new announcements have dropped, making this a great time to dive in and see how these tools can help streamline the work of security teams. Full show notes available on our blog: https://df3ndr.io/episodes/2026/02/01/02x01_scu_later_alligator.html Follow us on your favourite...

Not your regular episode but an announcement for our upcoming second season. Chris and I share what we've been working in preparations for season 2, and what you can expect from us during the upcoming year. Follow us on your favorite podcast platform or check us out on [YouTube]( https://www.youtube.com/@CloudArchitects/podcasts )

📍 Live from Times Square, New York City 🇺🇸 This was the first edition of Experts Live in the United States , and we couldn't be more proud to be part of it! We wrap up Season One with a special in-person recording from Microsoft’s office in NYC during Experts Live US . No planning, no script – just good conversation, best practices, and bad Sentinel acronyms. 😉 Chris and Koos will both be talkin...

In this episode Chris asks "To block or not to block?" as he looks at geo blocking in Conditional Access, while Koos explores the human element in cybersecurity. Full show notes available on our blog: https://df3ndr.io/episodes/2025/10/01/01x11_trust_me_im_a_keyboard_hid.html Follow us on your favourite podcast platform or check us out at https://df3ndr.io

In this episode Koos takes a look at the recent release of Sentinel data lake and Chris shares 5 tips to help your Entra Privileged Identity Management (PIM) deployment. Full show notes available on our blog: https://df3ndr.io/episodes/2025/09/01/01x10_lake_it_till_you_make_it_log.html Follow us on your favourite podcast platform or check us out at https://df3ndr.io

In this episode Chris revisits Microsoft Entra Suite and takes a deep dive into GSA - Global Secure Access . Koos did a project recently where Defender for External Attack Surface Management (EASM) was also implemented. And he likes to share how awesome this product is, as well as share some practical tips and pitfalls you need to wary of. Full show notes available on our blog: https://df3ndr.io/e...

In this episode Koos returns to a somewhat controversial topic - Security Copilot , but this time without the hype and of course with some practical tips. Chris introduces Microsoft Entra Suite in the first of two episodes taking a look at these capabilities. Full show notes available on our blog: https://df3ndr.io/episodes/2025/07/01/01x08_copilot_reinstall_bat.html Follow us on your favorite pod...

In this episode Chris shares 5 things you should configure in Microsoft 365 to make your tenant more secure and Koos introduces "Summary Rules" in Microsoft Sentinel. What are "Summary Rules"? And what new opportunities might bring it to your logging strategies? Full show notes available on our blog: https://df3ndr.io/episodes/2025/06/02/01x07_summarize-harden-take5.html Follow us on your favorite...

In this episode we look at one of Defender XDRs most exiting features at the moment: Attack Disruption! Why it is so exiting and how you can start using it today? Full show notes available on our blog: https://df3ndr.io/episodes/2025/04/03/01x06_ctrl_alt_disrupt.html Follow us on your favorite podcast platform or check us out at https://df3ndr.io

In this episode... Booting high on community energy! In this special in-person episode, recorded on-site at the Microsoft Campus during the MVP Summit 2025, Koos and Chris share behind-the-scenes insights, tech trends, and reflections on the evolving security landscape—all while dodging T-shirt printers and Summit buzz. Full show notes available on our blog: https://df3ndr.io/episodes/2025/04/03/0...

In this episode... * Chris revisits his e-mail authentication and security from last time to dig a little deeper. * Koos recently did some talks about SIEM migrations to Sentinel and keeping things as cost-efficient as possible. He also believes a company shouldn't focus solely on Microsoft Sentinel, and should consider looking into alternatives alongside it like Azure Data Explorer. And why are c...

In this episode... Chris takes a look at email security and digs into SPF, DMARC and all the other acronyms. Koos recently had some experience with Entra ID Entitlement Management he wants to share. What are Access Packages? And why should you look into it? Full show notes available on our blog: https://df3ndr.io/episodes/2025/02/02/01x03_authmail_eml-and-identity_gov.html Follow us on your favori...

In this episode we do a recap of some of the security announcements from Microsoft Ignite 2024. Chris takes a look at the upcoming changes to Intune while Koos shares some thoughts on new capabilities within Defender XDR and some other Security-related updates. Full show notes available on our blog: https://df3ndr.io/episodes/2025/01/05/01x02_Get-Ignite24Recap.html Follow us on your favorite podca...

In this episode Chris has some thoughts about MFA usage and deployment, and Koos recently ran into some issues with Passkeys and wants to share a couple of do's and don't's and also discuss future roadmap features. Full show notes available on our blog: https://df3ndr.io/episodes/2024/12/10/01x01_mfa.html Follow us on your favorite podcast platform or check us out at https://df3ndr.io

Introducing the podcast and getting to know Chris & Koos, our backgrounds, interests etc. We also take a look ahead at our first episode coming soon! Follow us on your favorite podcast platform or check us out at https://df3ndr.io If you prefer video you can check us out on YouTube at https://www.youtube.com/@CloudArchitects/podcasts