New webinar THIS WEDNESDAY. If you want to really know what really secures the (blank) out of Entra in an hour, here's how. Big thanks to my marketing friends at @Threatscape for GenAI'ing me some hair back in this thumbnail too. REGISTER: www.threatscape.com/...

Microsoft I need you to understand that as long as I'm breathing in and breathing out I will never want Outlook or Teams to open a SharePoint link in the browser ever just always give me the app.

Who wants to join my support group for losing sleep over token theft?

Immutable law of Entra: you don’t understand workload identities as well as you think you do, even when you know you don't understand them as well as you think you do.

Working theory. Scrolling LinkedIn, full of obvious AI slop, made me wonder if this is Dunning-Kruger for writing: bad writers and readers don’t see how obvious their slop is.

New post: focusing on the key biggest Microsoft 365 security considerations. READ: campbell.scot/micros... When we talk about Microsoft 365 security, we are talking about two things: (a) securing Microsoft 365 the platform, (b) using Microsoft 365 security tooling.

Microsoft 365: The Essential 10 Security Considerations - Ru Campbell MVP

When we talk about Microsoft 365 security, we are talking about two things: The latter can be used to achieve the former, as well as other (non-Microsoft 365) platforms. For example, using Defender for Endpoint on a Linux server in AWS, or using Entra for single sign on to Salesforce. Given its omnipresence in enterprise IT, Microsoft 365 security’s vastness (and value) needs to be front-of-mind for all tenant administrators. The Essential 10 is…

campbell.scot

Catching up with the AI Ignite news is like learning a new language. "Microsoft Badaboop is part of Microsoft Zublebeep, which you can find in Microsoft Talahoo, the Microsoft Ziggledeep for AI." (I do love it though.)

Join me, @WillTheFrenchie, and @WelkasWorld TONIGHT, 1800-2000 UTC for the latest Microsoft security news and two awesome speakers: • @RyanJohnMurphy4 – The new Microsoft eDiscovery UI and UX • @sfennah – The Oversharing Solution Blueprint REGISTER: www.meetup.com/m365s...

Actual screenshot from the Ignite Book of News.

New video: 5 common Entra ID guests mistakes (Entra B2B) • excessive directory visibility • ignored cross-tenant defaults • untrusted MFA & device states • open SharePoint sharing • no guest lifecycle There's tons more! But here's a starter WATCH: youtu.be/AXuj-U9p3jU

ICYMI: Microsoft Authenticator for iOS + Android will detect, prevent, then wipe Entra creds on rooted devices (MC1179154). • Phase 1 (warn mode) begins February '26 • followed by Phase 2 (block mode) • then Phase 3 (wipes Entra creds) • expected to be completed ~April '26

The unified Defender for Identity sensor as part of Defender for Endpoint is now generally available :-) Docs: learn.microsoft.com/...

Next M365 S&C UG - Oct 29, 18:00 UTC - @JoanneCKlein & Anna Bordioug: Two Sides of the Data Coin: Data Protection vs. Data Retention in Practice - @brand_gefahr: How Much is the Phish? An End-to-End Perspective on Phishing Operation REGISTER: www.meetup.com/m365s...

New video: new Defender detections for jailbreaks + prompt injection in Microsoft 365 Copilot • recap on what jailbreaks and prompt injections are (examples) • how they show up in Defender for Cloud Apps/hunting and Purview WATCH: youtu.be/iCRYJ32fwro

New video: deep dive on building Intune security baselines that actually work with legend of the game @SkipToEndpoint • why so many baselines are just plain bad • balancing security / usability • when to customise • how OIB makes it practical WATCH: youtu.be/Xe32TzHgueA

Still time to sign up at aka.ms/EntraZeroTrust for the rest of the Entra Zero Trust Practitioner series. On 9 October, I'm joining @merill, @nathanmcnulty, and more for a live Q+A on everything Entra identity and network access.

Among others in the Microsoft 365 stack, there is a new Defender icon! See them all: microsoft.design/art...

New video: deep dive into Entra ID Governance with MVP @MattChatt42. • why identity is the front door • sources of authority (HR vs AD) • joiner/mover/leaver workflows • PowerShell scripts vs governance at scale WATCH: youtu.be/VVU2UhYaGzk

Running in-person only (Edinburgh) ‘Mastering Microsoft Entra ID Security’’ on 6 Nov. 2hr Entra security deep dive for blue teams. Note this is exclusively for in-house security teams rather than other partners, MSSPs, etc. REGISTER: www.eventbrite.ie/e/...

Folks, join us TONIGHT for the M365 Security & Compliance User Group Two killer sessions and lots of prizes: Denis Mutlu - Optimizing Log Management for Sentinel & MDXDR @ThomasVrhydn - Proactive Exposure Hunting with Enterprise Exposure Graph REGISTER: www.meetup.com/m365s...

One of the first things you realise when contending with Microsoft 365 security posture management (like @Threatscape Overwatch): you really need to fight hard the instinct to mark everything 'High Risk'. There are a lot of dominos/attack paths that even small gaps can open up!

New video: an honour to join @HeikeRitter's Virtual Ninja Show discussing MDE policy management and deploying at scale: • personas + policy merge • rings and “critical time delay” • Live Response + RBAC • Effective settings WATCH: youtu.be/IvLNLcXRlrY

Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.

Convenient reminder to stop what you’re doing and enforce browser extension allow listing.

With so many different ways of managing Microsoft 365 apps' updates and settings (Intune, config.office.com, third-party), what are YOU using, and what is currently the "most recommended" method?

Heads up. Spotted by a colleague this morning: deception capabiliites in MDE are not making it past public preview.

New video: Why your Defender update settings are risky - update types: engines, platforms, intelligence - what is Microsoft’s 'Safe Deployment Practices' (SDP)? - update rings in Defender (not just Windows) - balancing rollout risk vs. protection WATCH: youtu.be/trQv__-Z9-8

Folks, working on two Defender books out this year and want to feature the best community tips. Defender for Endpoint In Depth 2nd Ed (w/ @Threatzman) Mastering Defender XDR 2nd Ed (w/ @Headburgh) So, drop your great MDE, MDO, MDI, MDA, and XDR tips here. Best get featured.

New video: deep dive into Defender for Endpoint/Antivirus settings. - what every one really does - what “good” looks like - gotchas - nuances And why some of the important ones are “hidden”. Watch: youtu.be/R8btJ_SjwVk

TIL that Purview parent sensitivity labels are being replaced by label groups (MC1111778). You can migrate using a wizard and by default it'll convert the parent label into both a group and a label within that group (to not risk removing an in-use label).