Daniel Streefkerk @egosumdns

Christian, Husband, Father, IT & Cyber Dabbler. Spent nearly 2 decades in the IT support & ops trenches before moving across to cyber security since 2019. dstreefkerk.github.io Straya Joined July 2009

Tweets

324
Followers

539
Following

1K
Likes

7K

Nathan McNulty @NathanMcNulty

3 days ago

Please stop using Private browser sessions for cloud admin accounts Look, we all know we shouldn't be using admin accounts while signed into our productivity account, but if you're gonna do it, at least use browser profiles so you can enforce compliance learn.microsoft.com/en-us/entra/id…

27 75 415 37K 307

Download Image

DHH @dhh

a week ago

Cookie banners have been a blight on the internet. Worse than the old scourge of pop-up advertisements! They need to die entirely. The idea has failed. Nobody reads any of it. If you want to ban targeted ads, do that. Let's see if the EU can correct, politico.eu/article/europe…

186 220 3K 124K 144

T.J. Moe @TJMoe28

a week ago

This is the embodiment of Christianity. Forgiving the man who assassinated your husband while you’re grieving at his funeral because that’s what Christ did for you. God bless Erika Kirk.

73 360 3K 122K 89

Download Video

Daniel Streefkerk @egosumdns

2 weeks ago

Is it just me, or does this UI choice in Firefox drive other people mad too? Burying "Close Other Tabs" in a sub-menu when something as rarely-used as "Close Duplicate Tabs" gets a spot on the main context menu.

0 0 0 67 0

Download Image

Dirk-jan @_dirkjan

2 weeks ago

I've been researching the Microsoft cloud for almost 7 years now. A few months ago that research resulted in the most impactful vulnerability I will probably ever find: a token validation flaw allowing me to get Global Admin in any Entra ID tenant. Blog: dirkjanm.io/obtaining-glob…

145 897 3K 436K 1K

Daniel Streefkerk @egosumdns

2 weeks ago

Was just looking at the issues on a MCP-related repo, saw this cheeky GitHub Issue... #mcp #promptinjection

0 0 0 50 0

Download Image

Fabian Bader @fabian_bader

3 weeks ago

Sentinel UEBA got a welcome set of new data sources ◽Defender XDR device logon events ◽Entra ID managed identity signin logs ◽Entra ID service principal signin logs ◽AWS CloudTrail ◽GCP audit logs ◽Okta MFA techcommunity.microsoft.com/blog/microsoft…

1 13 62 3K 28

Daniel Streefkerk @egosumdns

3 weeks ago

This (in preview) feature in M365 looks like a great fit for sending emails from MFDs, line of business apps. It only permits sending to internal recipients. learn.microsoft.com/en-us/exchange…

0 0 1 68 0

Daniel Streefkerk @egosumdns

4 weeks ago

This "Always Works" command/hook for Claude Code is mega handy. I've lost count of the number of times it has told me that things are working when it hasn't even checked. pageai.pro/blog/31-claude…

1 0 0 83 1

Download Image

Russ @rustla

4 weeks ago

A bunch of apps I’ve been poking around with lately interact with Dataverse using $batch queries. Not seen much chatter about it, but really handy to subvert intended logic when the queries and writes are just … there. Any authz issues are super obvious too 👁️👁️

0 1 1 86 0

John Savill @NTFAQGuy

4 weeks ago

Microsoft have released a great (free) Zero Trust Workshop that helps organizations with an actionable roadmap to achieving zero trust in their organization. youtu.be/xVWr1ml47_g aka.ms/ztworkshop 00:00 - Introduction 00:07 - Zero Trust 101 00:22 - NIST zero trust…

6 90 438 38K 706

Daniel Streefkerk @egosumdns

4 weeks ago

A chat with my teenage son about SIEM detection rules (he saw me working on some) pivoted into MITRE, TTPs, network services/ports, and a trip around Shodan. Ridiculous what's still exposed to the web in this day and age. We just spent 15mins looking at RTSP and VNC screenshots.

0 0 1 86 0

Joe Stocker @ITguySoCal

4 weeks ago

Even though Microsoft provided a PowerShell command in April 2025 to disable the SMTP DirectSend feature in Exchange Online, we are still seeing attackers successfully reach the inbox for organizations that do not have their DMARC DNS Record set to Reject or Quarantine. According…

14 76 357 31K 532

Daniel Streefkerk @egosumdns

a month ago

Came across this really useful blog post, I recommend reading it if you're doing any sort of development in Claude Code: memo.mx/posts/claude-c…

0 0 0 76 0

Merill Fernando @merill

a month ago

👋 Check out this new Microsoft Entra blog post 👇 Microsoft Entra Private Access for Domain Controllers is now in Public Preview techcommunity.microsoft.com/t5/microsoft-e…

1 14 60 5K 39

Daniel Streefkerk @egosumdns

a month ago

Wow, this is a great development!

Joe Stocker @ITguySoCal

a month ago

Wow, this is a great development!

4 44 214 17K 204

Download Image

0 0 0 48 0

Daniel Streefkerk @egosumdns

a month ago

Came across a SPF record today that allows approximately 79 octillion IPv6 addresses (79,228,162,514,264,337,593,543,950,336) to send email from the domain in question... Somehow I don't think that's strictly required!

0 0 0 44 0

Scott Schnoll @schnoll

a month ago

No more MOERA domains for email (which you shouldn't be using the first place 😉) Limiting Onmicrosoft Domain Usage for Sending Emails techcommunity.microsoft.com/blog/exchange/… #MExchange #ExchangeOnline #MOERA #Security