Christophe Tafani-Dereeper
@christophetd.fr
1.5K followers 120 following 80 posts
Cloud and container security • Security research and open source at Datadog 🇨🇭🇫🇷 https://christophetd.fr
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christophetd.fr
Welcome to everyone joining Bluesky!

👋 I'm working as a cloud security researcher at Datadog and I write about cloud security, container security and related open-source projects.

Personal blog: blog.christophetd.fr
OSS work: github.com/christophetd/
Talks: christophetd.fr#:~:text=Wind...
Christophe Tafani-Dereeper
Personal tech and security blog about things I like, use, dislike and misuse.
blog.christophetd.fr
christophetd.fr
If you're in cloud security, do have a look at this piece of research I've been working on! Feedback / thoughts welcome
securitylabs.datadoghq.com
Our State of Cloud Security 2025 study is out!

www.datadoghq.com/state-of-clo...

• On AWS, 40% of organizations leverage data perimeters
• 11% of Google Cloud GKE and 23% of Google Cloud VMs are overprivileged
• On Azure, 1.3% of storage containers are public, 58% proactively block public access
State of Cloud Security | Datadog
For our 2025 report, we analyzed AWS, Google Cloud, and Azure data from thousands of organizations to understand the latest trends in cloud security posture.
www.datadoghq.com
Reposted by Christophe Tafani-Dereeper
metalhearf.fr
The EU is advancing legislation requiring all messaging platforms to scan private messages, even in encrypted apps like Signal/WhatsApp/Telegram.

600+ security researchers oppose ChatControl for being technically flawed.

Learn more about it 👉 metalhearf.fr/posts/chatco...

#ChatControl #privacy
ChatControl wants to scan all your private messages
The EU is pushing legislation that would scan all our private messages, even in encrypted apps.
metalhearf.fr
christophetd.fr
Thanks! This was an incredibly great post
christophetd.fr
If you're into cloud security, fwd:cloudsec Europe is now live.

Schedule: fwdcloudsec.org/conference/e...
Reposted by Christophe Tafani-Dereeper
mccune.org.uk
I did a bit more looking into the upcoming bitnami deprecation. The images are still getting millions of pulls a week, so depending on exactly what tags vanish next week, there could be a lot of broken deploys on the 28th!

raesene.github.io/blog/2025/08...
Bitnami Deprecation
raesene.github.io
christophetd.fr
@micahflee.com thank you for the amazing and inspiring defcon talk
christophetd.fr
I arbitrarily picked a list of 50 talks I'm most excited about that are happening next week at DEF CON / Black Hat / BSides LV / The Diana Initiative.

I'll also add recordings/slides to this list when they become available!
christophetd.fr
Getting ready for DEF CON next week!

✅ Slides
✅ Demos
✅ Custom shirt designed for the occasion
christophetd.fr
Looks like the maintainer of a number of highly-popular npm packages was phished through npnjs[.]com, and his access used to publish malicious versions of their packages

x.com/JounQin/stat...

www.linkedin.com/feed/update/...

github.com/prettier/esl...
christophetd.fr
Great research, would you be able to share the sample GitHub repositories and/or their metadata? I'm working on an open-source tool and could use some additional samples!
christophetd.fr
Stratus Red Team AWS attack techniques are now mapped to the Threat Technique Catalog for AWS

Stratus Red Team AWS attack techniques: stratus-red-team.cloud/attack-techn...

Threat Technique Catalog by AWS: aws-samples.github.io/threat-techn...
christophetd.fr
The MCP spec has been updated to include security best practices

• Confused deputy
• Token passthrough
• Session hijacking

modelcontextprotocol.io/specificatio...
Security Best Practices - Model Context Protocol
modelcontextprotocol.io
christophetd.fr
Solid way to start the week
christophetd.fr
Happy to discuss submission ideas!
christophetd.fr
If you're a cloud practitioner based in Europe, definitely submit to fwd:cloudsec Berlin happening in September!

We're actively seeking submissions from first time speakers and non-security folks. In that case, you can submit by May 30th and get initial feedback on your submission!
fwdcloudsec.org
The CFP for fwd:cloudsec Europe is now open! We're looking for practitioner-focused cloud security content, and we encourage all practitioners to submit, whatever your role or level of experience.

The CFP is open until July 11th. Read more: fwdcloudsec.org/conference/e...
CFP | EU 2025 | fwd:cloudsec
fwd:cloudsec is a non-profit conference on cloud security. At this conference you can expect discussions about all the major cloud platforms, both attack and defense research, limitations of security...
fwdcloudsec.org
Reposted by Christophe Tafani-Dereeper
jennamclaughlin.bsky.social
My story breaking this news exclusively was 7K+ words and had almost all of this in it, and more:
www.npr.org/2025/04/15/n...
Reposted by Christophe Tafani-Dereeper
Reposted by Christophe Tafani-Dereeper
wietzebeukema.nl
By making minor changes to command-line arguments, it is possible to bypass EDR/AV detections.

My research, comprising ~70 Windows executables, found that all of them were vulnerable to this, to varying degrees.

Here’s what I found and why it matters 👉 wietze.github.io/blog/bypassi...
christophetd.fr
313 speakers?! ça comment à faire du monde, impressionant !