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Christian Biehler

@cssec

Christian Biehler reposted

One compromised Microsoft Entra ID or Azure account can lead to a full tenant takeover. Our new framework ranks roles by risk and adds strong MFA + secure admin workstations to protect the most critical accounts. Read the whitepaper: bit.ly/47GbPTU

Mandiant's tweet image. One compromised Microsoft Entra ID or Azure account can lead to a full tenant takeover. 

Our new framework ranks roles by risk and adds strong MFA + secure admin workstations to protect the most critical accounts.

Read the whitepaper: bit.ly/47GbPTU

Christian Biehler reposted

WDAC Managed Installers explained: Instead of trusting individual files, trust the process that installs them (ConfigMgr, Intune, etc.) Files get NTFS Extended Attributes → WDAC trusts them → No explicit rules needed Limitations & gotchas in our new blog 👇…


Christian Biehler reposted

Raw NTFS parsing for SAM/SYSTEM/NTDS.dit access? github.com/kfallahi/Under… 400 lines Powershell - easy peasy ❤️🔥

ShitSecure's tweet image. Raw NTFS parsing for SAM/SYSTEM/NTDS.dit access?

github.com/kfallahi/Under…

400 lines Powershell - easy peasy ❤️🔥

Christian Biehler reposted
PyroTek3's tweet image. All of the #ActiveDirectorySecurityTips I posted here are now located on ADSecurity.org
adsecurity.org/?tag=activedir…

Christian Biehler reposted

Quick wins for hardening Active Directory that actually move the needle… (Not in any particulate order) 1. Run Locksmith and fix all findings 2. Make sure all admin accounts have unique, strong passwords 3. Use fine-grained password policies 4. Remove unnecessary accounts…


Christian Biehler reposted

Excellent work as always, and wow 🤯 what a vulnerability

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…



Christian Biehler reposted

I have been presenting the risk to Active Directory if VMware infrastructure isn't well protected since 2015. adsecurity.org/wp-content/upl… VMWare admins can access the storage associated with virtual Domain Controllers and therefore have access to the AD database file (ntds.dit).…

PyroTek3's tweet image. I have been presenting the risk to Active Directory if VMware infrastructure isn't well protected since 2015.
adsecurity.org/wp-content/upl…

VMWare admins can access the storage associated with virtual Domain Controllers and therefore have access to the AD database file (ntds.dit).…

this part is brutal.

jamieantisocial's tweet image. this part is brutal.


Christian Biehler reposted

Powerful KQL Operators You Didn't Know You Needed rodtrent.substack.com/p/powerful-kql… #MustLearnKQL #KQL #KQLMysteries

rodtrent's tweet image. Powerful KQL Operators You Didn't Know You Needed rodtrent.substack.com/p/powerful-kql…

#MustLearnKQL #KQL #KQLMysteries

Christian Biehler reposted

Passwordless RDP Authentication for On-Prem Servers with Smart Cards (FIDO2 Security Key) dlvr.it/TL60BH

SasStu's tweet image. Passwordless RDP Authentication for On-Prem Servers with Smart Cards (FIDO2 Security Key) dlvr.it/TL60BH

Christian Biehler reposted

Cobalt Strike for free!? Adaptix C2 (@hacker_ralf) is the best open source C2 I've used since Havoc (@C5pider). SOCKS5, remote and local port forwards, and BOF support! Now it's easy to install the server + client, especially on 🏟️Ludus with our new role: github.com/badsectorlabs/…

badsectorlabs's tweet image. Cobalt Strike for free!? Adaptix C2 (@hacker_ralf) is the best open source C2 I've used since Havoc (@C5pider). SOCKS5, remote and local port forwards, and BOF support! Now it's easy to install the server + client, especially on 🏟️Ludus with our new role:

github.com/badsectorlabs/…

Christian Biehler reposted

Pretty nice!

7h3h4ckv157's tweet image. Pretty nice!

Christian Biehler reposted

⚡️ Loki C2 just leveled up! 🍄🧙‍♂️ 🔗 Agents can now link to each other, and across platforms! 🔗 No internet? No problem. Chain them, pivot deep, and keep moving! @XForce @IBM @IBMSecurity Check out the new release here: github.com/boku7/Loki

0xBoku's tweet image. ⚡️ Loki C2 just leveled up! 🍄🧙‍♂️
🔗 Agents can now link to each other, and across platforms! 🔗
No internet? No problem.
Chain them, pivot deep, and keep moving!
@XForce @IBM @IBMSecurity 
Check out the new release here: github.com/boku7/Loki

Christian Biehler reposted

Looking to extend your phishing-resistant MFA deployment to remote desktop connections? We have published some great guidance covering several different scenarios so you can understand what support looks like with those authentication flows - learn.microsoft.com/en-us/entra/id…


Christian Biehler reposted

This isn’t a Microsoft problem. It’s not an ANY.RUN problem either. It’s a problem when orgs accept the risk of submitting confidential data using API keys tied to free accounts – which by default create public submissions. If you do that, you’re basically…

🚨 Important: False positive from MS Defender XDR has led to 1,700+ sensitive docs being shared publicly via #ANYRUN alone. A couple of hours ago we saw a sudden inflow of Adobe Acrobat Cloud links being uploaded to ANYRUN's sandbox. After research, we've discovered that…

anyrun_app's tweet image. 🚨 Important: False positive from MS Defender XDR has led to 1,700+ sensitive docs being shared publicly via #ANYRUN alone.

A couple of hours ago we saw a sudden inflow of Adobe Acrobat Cloud links being uploaded to ANYRUN's sandbox.  

After research, we've discovered that…


Christian Biehler reposted

Two new ASR rules are now generally available: ◽Block rebooting machine in Safe Mode ◽Block use of copied or impersonated system tools learn.microsoft.com/en-us/defender…


Christian Biehler reposted

Must read this analysis of EntraID critical roles from an attacker's perspective because they enable (by Elli Shlomo, based on Merril Fernando diagram): - Initial Privilege Escalation: Compromising a low-profile role like Application Administrator or Password Administrator can…

francescofaenzi's tweet image. Must read this analysis of EntraID critical roles from an attacker's perspective because they enable (by Elli Shlomo, based on Merril
Fernando diagram):

- Initial Privilege Escalation: Compromising a low-profile role like Application Administrator or Password Administrator can…

Christian Biehler reposted

🚨 Microsoft Warns: Fake Booking[.]com Emails Deploying Malware! Hackers are using a new social engineering trick—ClickFix—to target the hospitality sector. Victims unknowingly copy-paste a command that launches data-stealing malware. ⚠️ How the scam works: 🔹 Fake…

TheHackersNews's tweet image. 🚨 Microsoft Warns: Fake Booking[.]com Emails Deploying Malware!

Hackers are using a new social engineering trick—ClickFix—to target the hospitality sector. Victims unknowingly copy-paste a command that launches data-stealing malware.

⚠️ How the scam works:
🔹 Fake…

United States Trends

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