Guy
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guy.fabron.org
Guy
@guy.fabron.org
A passionate and pragmatic cyber security professional. Finding secure solutions in a social and sharing world. Views are my own.
Because good Cyber Security is for life and not just October check out the current Humble Bundle running this month for some cracking titles from trusted sources (as always be happy with the donation amounts to where you money ends up) www.humblebundle.com/books/cybers...
Humble Tech Book Bundle: Cybersecurity Month by O'Reilly
Gain the skills you need to protect your digital world with our newest Cybersecurity Bundle from the experts at O’Reilly.
www.humblebundle.com
October 14, 2025 at 2:39 PM
Excellent investigation and research. Well worth a read.
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-gl...
One Token to rule them all - obtaining Global Admin in every Entra ID tenant via Actor tokens
While preparing for my Black Hat and DEF CON talks in July of this year, I found the most impactful Entra ID vulnerability that I will probably ever find. One that could have allowed me to compromise ...
dirkjanm.io
September 18, 2025 at 8:41 AM
Reposted by Guy
It is time!

BSides Leeds is back on Saturday 21st June and our Call for Speakers is now open!

If you have a story to tell, research to present or tools to demonstrate we would love to hear from you!

The Google forms link is here

lnkd.in/enihgQK7
March 11, 2025 at 9:08 PM
@dwalg8.bsky.social Scrooby Top! Trust required as the person in the seat next to me did not look accommodating enough to take a picture across. #scroobytopgame
January 21, 2025 at 9:09 AM
@dwalg8.bsky.social yay, you took your time, someone else is here to talk to. I can delete the other one now if the others pop along .
January 7, 2025 at 10:07 PM
Reposted by Guy
Starting in 20 minutes, ask me your questions on Bellingcat's latest stage talk on Discord.
@eliothiggins.bsky.social will be joining us live tomorrow to answer your questions, as a final event marking our 10th year as an organisation. Join us in the Discord Server at 5pm CET, 11am EST. discord.com/invite/belli...
Join the Bellingcat Discord Server!
Come hang out with open source research enthusiasts, share knowledge and experiences, and learn lots! | 32291 members
discord.com
December 12, 2024 at 3:41 PM