Ru Campbell

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.

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/...

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).

I don’t think that’s the incentive LinkedIn thinks it is…

TIL Entra ID Governance for guests is PAYG. Example: access review for inactive guests charged based on # guests in scope. So, charged on API events that include guests separate to usual 50K allowance. Max 1 charge guest/month even if multiple events. learn.microsoft.com/...

TIL about Purview on-demand classification for Windows to discover + classify files at rest on devices (MC1106875). On-demand classification (PAYG) was previously limited to SPO + ODfB. Partially addresses a gap a lot of my customers ask about... will auto labelling follow? 🤔

Most IT teams, including mature ones, aren’t gonna adopt physical dedicated PAWs and it’s not reasonable to assert they should. What have been your most successful compromises for this?

New video: 1hr of advanced Conditional Access deep dives with @NateHutch365 at @Threatscape. Covering nuanced scenarios like app allow listing, missing app management, and really stretching CA into some cool and uncommon uses. WATCH: youtu.be/DkCq8wWN9Sc

New video: 5 best practices for Conditional Access. Kind of an inverse on my 5 common mistakes video. Point being: know what to avoid doing; while knowing what good looks like. Watch: youtu.be/drO5YFxZDyU

More art than science.

New video: understanding Copilot Studio, MCP, and generally the state of play for securing AI in Microsoft 365 with Microsoft's Graham Hosking. Watch: youtu.be/9JrBswGsUSw

A hidden gem in MDE’s new effective settings page is revealing which admin-set values are ignored by tamper protection's enforcement of known good ones. For example, threat actions (quarantine, etc) are protected by TP which enforces response based on Defender definitions.

News about Microsoft Authenticator backing up MFA to iCloud hit the message centre today, but if I'm reading this correctly, it doesn't apply to Entra MFA? >"Only account names and third-party TOTP credentials will be backed up"

Trying so hard to use new Oulook as daily driver but it's honestly just brutal with no upside except the 'Quote' format button is neat.

Not quick to offense, but having just seen it, if you're using the recent Microsoft redundancies to shill your product, I will immediately block and delete you.

The world isn’t divided by politics or class. It’s divided by whether you pronounce Entra as “Entra” or “Entra”.

I can not and will not be stopped.