Lee Holmes 

@Lee_Holmes@infosec.exchange
2.6K Followers
314 Following
1.8K Posts
Partner Security Architect, Azure Security. PowerShell developer, fanatical hobbyist, and author of the PowerShell Cookbook.
Bloghttps://www.leeholmes.com
Fascinating - "Keep the rows of this output which shows which processes start with p and are using between 110 and 120MB of working set"

It's surprising to see the back-and-forth around "AI is going to take your job" stories. I guess this means I'm old, but the exact same media cycle happened when Windows admins started hearing about PowerShell 20 years ago.

The end result is that, by and large, everybody in the Windows Management industry became tremendously more productive and effective. I heard about people 3x-ing their salaries all the time.

Your job is not at risk if you, like most, are the kind of person that is always trying to find ways to do it better and more efficiently.

Learn how Windows manages authentication, access control, and resource permissions with clarity and precision.

This book offers hands-on PowerShell examples that guide you through key internals like the Security Reference Monitor, SAM, and Kerberos—ideal for researchers, defenders, and developers.

https://nostarch.com/windows-security-internals

#cybersecurity #infosec #informationsecurity #PowerShell #WindowsSecurity #DevSecOps #CyberDefense

Incredible - PWHL Seattle season's tickets just went up for the general public, and the arena is almost sold out already.

https://www.thepwhl.com/en/teams/seattle/tickets

You know that "gravitational slingshot" thing they always use in scifi movies and TV shows?

Yeah, that's real*. Here's how it works.

https://www.scientificamerican.com/article/how-does-a-gravitational-slingshot-work/

* though they usually get it wrong in movies and TV shows

How Does a Gravitational Slingshot Work?

Spacecraft can get a significant boost by stealing energy from planets

Scientific American

The argument against speeding is that it causes more (and more severe) crashes. Shouldn't that data be enough to figure out where to focus on enforcement rather than data from cellphone location snooping?

https://www.king5.com/article/news/local/cellphone-data-help-state-patrol-catch-speeding-drivers-washington/281-2988e838-320f-4c2f-b2f9-89b17317bcfa

Before you continue to YouTube

If you're attending the Linux Security Summit in Europe this year, don't miss the talk from @l0kod on the long journey to supporting code integrity in dynamic runtimes!

https://lsseu2025.sched.com/event/25GEQ

Background on the Kernel support for this that just recently merged: https://docs.kernel.org/userspace-api/check_exec.html

Linux Security Summit Europe 2025: Script Integrity - Mickaël Salaün, Micro...

View more about this event at Linux Security Summit Europe 2025

Ran tech for a show this weekend, and the performers waved a big thank you to the Tech Booth at the end. I couldn't believe how generous that felt and I will never underestimate the power of a simple thanks again.

This is such a nice story. I had a horrified reaction seeing this tagged with "AI" (AI being used to talk to lonely seniors!!??!) but it was way more wholesome: human volunteers having weekly calls with lonely seniors, with AI transcribing and auditing transcripts to keep those seniors safe.

https://news.microsoft.com/source/features/digital-transformation/on-age-uks-telephone-service-for-lonely-seniors-friendships-blossom-with-safeguards-in-place

On Age UK’s telephone service for lonely seniors, friendships blossom, with safeguards in place - Source

Demand for the Telephone Friendship Service soared during the pandemic. To cope, Age UK turned to technology to scale up and monitor calls.

Source

Every time I make another tabletop in Twine, I wonder why more people don't do this.

Text-based adventures are a powerful simulation tool for cybersecurity.

https://twinery.org

Twine / An open-source tool for telling interactive, nonlinear stories