ChrisPy
@chrispy_sec
Principal Security consultant at Reversec. Love doing some Azure/Entra ID research ☁️ Opinions are my own
This incredible duo of Leonidas Tsaousis (@laripping) & James Henderson are taking the stage at Offensive X to talk about ‘’ There and Back Again: An Attacker's Tale of DCs in AWS’’ #OffensiveX2025 #CyberSecurity #AWS #RedTeam #CloudSecurity #InfoSec #Hacking
Great presentation & next level memes by @LAripping and James Henderson! @TheOffensiveX
consulting.withsecure.com/articles/top-5… Was an interesting experience helping to write this and taking a step back from the usual deep dives. But ngl dealing with my general repetitiveness and trying to fit nuances for three big cloud providers in one article turned out to be a hard task😂
Last talk shout out for @nojonesuk and @_Skybound who talked about how to build a new AWS environment. By consultants for consultants and without any extra external consultants! Worth a check out if you’re interested in some of the challenges we faced youtu.be/rai0bTOamG0
Check out @Thomasbyrne__ ‘s talk as well if you wanna see some more usage of RoadRecon with Microsoft Graph! youtu.be/dTUeAhzmIu8
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 “pre-signed url” equivalent method of accessing SharePoint files! youtu.be/l5lpIF_QZCE
It’s a packed house over at @_sigil talk on Azure Service Principals, a history on backdooring them, and more!
Check out @_sigil 's talk on Entra 1st-party service principal abuse currently airing at fwd:cloudsec youtube.com/watch?v=0BTBK3… Deffo a good watch in the current livestream or when the individual talk video drops later on in the channel
Heya got a talk happening later today pretalx.com/fwd-cloudsec-2… where I’m gonna talk about some interesting SharePoint findings! Last one will be particularly interesting to folk 👀 Should be at this live stream youtube.com/live/Vb_MyY3RQ…
Hey @NathanMcNulty gathering some data and wanted to get your thoughts. On the topic of exclusions, what are the best approaches for Conditional Access in Entra and exclusions for endpoints in MDE in the context of a large enterprise? CA policies I'm a fan of Restricted AU sec…
An in-depth look at the recently published EchoLeak vulnerability on M365 Copilot by @Aim_Security_ that could lead to data exfiltration just by sending an email to a user who uses Microsoft Office365 Copilot. youtu.be/Myf1cLsUxsk
I love how when I'm testing CA policies I can just google around a bit and find @NathanMcNulty 's detailed guides around some of the issues😂 P.S Also pro-tip for people playing with attributes remember that there is an Attribute assignment AND definition adm role
Filter for apps was introduced late last year that allows us to leverage custom security attributes within Conditional Access policies Very helpful for microservices architectures with constantly changing appIds, but also, apps not shown in the picker 💡 learn.microsoft.com/en-us/entra/id…
I did a thing. Thanks @CloudSecPod for having me!
🚨 New Episode Alert! How do attackers stay under the radar in Azure? 🤔 This week, we dive into lesser-known APIs, detection gaps & how blue teams can stay ahead. 💬 Guest: @chrispy_sec (@WithSecure ) 🎧 Drops today #CloudSecurity #AzureSecurity
This is truly amazing. The Deputy White House Press Secretary is claiming that I'm wrong, and that the "tariff rates" on Trump's chart were calculated by "literally" measuring every country's tariffs and non-tariff trade barriers. To prove it, he screenshots the formula the USTR…
With a process that began two and a half years ago, I'm very excited to announce that I've written a book with @nostarch! 🎉 "Practical Purple Teaming" tells you all you need to know to get started with collaborative offensive testing. nostarch.com/purple-teaming
Obligatory tactical repost of my talk from @Disobey_fi this year! Hopefully people use this to get inspired and show us some more cool less explored attack surfaces in Entra and Azure youtu.be/iwLaWPisu64?si…
Yo check out my friend James’ talk on protocol confusion attacks Deffo an excellent use of 40 mins if you’re into cool lower-level attacks youtu.be/gcsdrQH0fOQ?si…
Excellent talk from @martinhaller_IT on various attacks against Entra! Would deffo recommend to folk to watch the vid when it gets published by @Disobey_fi
Storm-2372 now device code phishing for PRTs... dirkjanm.io/phishing-for-m… (detection KQL in blog)
Within the past 24 hours, we observed Storm-2372 shifting to using the specific client ID for Microsoft Authentication Broker in the device code sign-in flow of their device code phishing campaign. Get more details from our continuous tracking of this active threat:…
Massive thanks to @DrAzureAD for being able to get one of these cool badges! Coming in early-ish clearly was the right call 😂 Will be playing around with it alongside my bro to get it working (or break it more)
As we heard earlier, there are no @Disobey_fi badges this year. No worries, I'm doing a spring cleaning and will give away some of mine on Friday at Disobey! Some are just blingy-blingy-thingies, some really cool PCBs (like @defcon & @WEareTROOPERS badges). To get one, come say…