Katie Knowles @_sigil
Senior Security Researcher @ Datadog. š Head in the (Azure) clouds. Sometimes blogging, always curious. Aim to be, rather than to seem. kknowl.es Toronto, Ontario Joined September 2010-
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Katie Knowles retweeted
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-globā¦
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Katie Knowles retweeted
š„ šš„šØš®š šššš¬ š¢š¬ š„š¢šÆš! šļø A hands-on lab environment to practice your cloud incident response skills. cloudlabs.invictus-ir.com We're also doing a giveaway here, to enter: 1. Like this post 2. Comment why you want to have access (Winners announced Mondayā¦
Katie Knowles retweeted
š Old and busted: Cloud attackers making noisy List/Describe calls. š„ New hotness: Laundering enumeration calls through an AWS service silently. Or at least, that used to work, until @datadoghq partnered with AWS to close this gap. Read more here: securitylabs.datadoghq.com/articles/enumeā¦
š Exciting news: The Office 365 Exchange Online SP privilege escalation we documented in "I SPy" is no longer possible! We've updated the post to reflect this. Thanks to Eli Guy for the tip on this one: securitylabs.datadoghq.com/articles/i-spyā¦
Katie Knowles retweeted
Why should Microsoft's Nested App Authentication (NAA) should be on your security team's radar? @Icemoonhsv breaks down NAA and shows how attackers can pivot between Azure resources using brokered authentication. ghst.ly/45h2Zw3
Great seeing everyone at @defcon!! I'll always be in love with seeing so many hackers, villages, and talks from every corner of the world in one place.
Katie Knowles retweeted
Consent & Compromise: Abusing Entra OAuth for Fun and Access to Internal Microsoft Applications research.eye.security/consent-and-coā¦
Katie Knowles retweeted
Today, together with Jonathan Elkabas, we're releasing EntraGoat - A Deliberately Vulnerable Entra ID Environment. Your own hands-on Entra lab for identity attack simulation. Built for red teams, blue teams and identity nerds. Check it out herešgithub.com/semperis/entraā¦
Katie Knowles retweeted
If anybody is interested in Azure DevOps and how attackers might go about abusing OIDC connections used in pipelines then check out my colleagueās latest blog! labs.reversec.com/posts/2025/07/ā¦
Excited to see folks at DEFCON next week!! Ready to see some great talks and get those conference steps in. š
We're looking for a curious AI security researcher to join us! š
We're looking for a curious AI security researcher to join us! š
This is a great point! Ensuring your cloud admins aren't synced users will prevent the federated domain takeover scenario, as only synced users are vulnerable.
This is a great point! Ensuring your cloud admins aren't synced users will prevent the federated domain takeover scenario, as only synced users are vulnerable.
āļø My fwd:cloudsec talk, "I SPy: Rethinking Entra ID research for new paths to Global Admin", is up! Learn what a service principal is, how Microsoft's first-party apps could be backdoored, and one weird trick they haven't fixed yet: youtube.com/watch?v=oNpwttā¦
Thank you for a great week, @fwdcloudsec!! So many fantastic conversations and sessions. See you next year!
Katie Knowles retweeted
I have a new post out on the @NetSPI blog today. This one is on extracting sensitive information from the Azure Load Testing service. netspi.com/blog/technicalā¦
Katie Knowles retweeted
My talk was published mega quickly as its own video by @fwdcloudsec (thanks btw!) So feel free to check it out if you wanna learn some fun SharePoint research outcomes and learn about a āpre-signed urlā equivalent method of accessing SharePoint files! youtu.be/l5lpIF_QZCE
Thanks for joining!
When the hotel has a free drink for your panic rehearsals. Looking forward to @fwdcloudsec! š„
Katie Knowles retweeted
Since several people already asked: the slides from @fabian_bader and myself for @WEareTROOPERS are available! "Finding Entra ID CA bypasses-the structured way". We talked about FOCI, BroCI, CA bypasses, scopes and getting tons of tokens. Check it at dirkjanm.io/talks/
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