Mark Manning
Mark Manning
@antitree.com
Process isolationist, k8s hacker, ᴎo-prem pusher, syscall denier, container liberator 🔸Xxx 🔸Rochester 2600, IOIOIO Security 🔸Former: chainguard, Snowflake, NCC Group, Hackerspace starter, BSidesROC Founder
482 followers847 following183 posts
Can people please send me @chainguard.bsky.social memes? I'm starting a collection
I've been spending most of my time lately researching sandboxing areas and I wrote up what I think is interesting about Firecracker, seccomp and how it has an io_uring bypass if seccomp were to ever be the last line of defense during a breakout. www.antitree.com/2026/09/fire...
Heading to DEFCON. Couldn't find anyone that made this so I wrote it: A flipper zero NFC canary: keep it in your pocket or bag to keep track and alarm when someone tries to scan your gear while you're walking around the con. github.com/antitree/nfc...
k8s security training. People asking me what they should do to learn about kubernetes security well here you go.
Time to level up on K8s security. I won't oversell my Agentic AI-Aided #Kubernetes Attack & Defense class - I'll just let 4 people I respect say what they got out of it. @blackhatevents.bsky.social Las Vegas in August! tinyurl.com/bhus26-kube-... @malwarejake.bsky.social @grahamhelton.bsky.social
Tomorrow is my last day at @chainguard.bsky.social Best company ever. I may kick myself for leaving but I will definitely kick myself if I don't try out the next opportunity. I've been a fan of this company from its inception. Marketing to 4-10 year olds in my neighborhood since 2023
Mark Manning reposted
Skytalks will be at BSidesLV again in 2026 CFP callforpapers.bsideslv.org/cfp is open and ends May 8th! You will be required to create an account to submit a CFP If you plan to submit anonymously, please at a minimum use a new browser window, and a new email address and fake name. #CFP
Mark Manning reposted
By the way, we just published another privilege-escalation CVE in ingress-nginx: github.com/kubernetes/k... 🚨 This will be the final, final release. Please migrate off ingress-nginx as soon as possible. 🚨
I did say that! Ingress-nginx *is* an infinite CVE piñata! You hit it with a stick and vulns fall out 😁
Mark Manning reposted
🕯️ Par’s Memorial 🕯️ Link below. Please watch the CHAT video in the description. Rest in peace, Jason Snitker Legend. Always. youtu.be/0qMRIZWCrJw?...
Mark Manning reposted
NEW: For months, I’ve been working on the story of Peter Williams, the former U.S. defense contractor who stole several hacking tools and then sold them to a Russian broker. Here’s what we know about the case, what we still don’t know, and a peek behind the scenes at how I reported this story.
I have a visceral reaction to this stuff because we are repeating history. Keep them coming. The corpus grows. github.com/beelzebub-la...
My talk "Sandboxes, Seccomp, and Syscalls: Chasing Isolation in Kubernetes" was officially accepted for @BSidesSF! Pretty excited about this. See you there? sched.co/2E1hS
The @bsidesbuffalo.bsky.social CFP is still open through March. You should submit that talk idea that you have. Reasons why: * It'll be an even better idea once you write it down * You're going to kick yourself in a month for not submitting * You're smarter than you think www.bsidesbuffalo.org/cfp/
Mark Manning reposted
"A security researcher has identified 287 Chrome extensions that allegedly exfiltrate browsing history data for an estimated 37.4 million installations" Recipients: data brokers like Similarweb. Roughly 1% of Chrome users affected. Just don't use extensions 😢 www.theregister.com/2026/02/11/s...
Stop putting "web" in front of everything and baking it into my browser please. share.google/g1BLx3vSyC1z...
Remember when people stopped caring about RSS? Turns out having an XML based way of reading articles and its metadata is a super efficient way for LLMs to read articles. I don't get very many Internet "I-told-you-so's" so all of us RSS and @feedly.com customers can take a victory lap on this one.
Mark Manning reposted
Notepad++ versions and update mechanisms have been compromised since September. Please update to 8.9.1 wherever you have this tool. It's unclear what malicious versions of the tool might do. I Recommend activating incident response for affected hosts. notepad-plus-plus.or...
All ya'll installing openclaw.ai on your real systems are wild. It's a cool demo of the future but ...
Mark Manning reposted
The schedule for BSides Reykjavik 2026 is live at cfp.bsidesreykjavik.com/2026/schedule/ Other details at bsidesreykjavik.com. Remember tickets are still available both for the workshops and the conference.
This rush to repurpose sandbox technologies to become "AI agent boxes" is great to see. Kata is an obvious option... but layering in k8s to agentic workers is going to require another layer that needs hardening. I'm interested to see where the industry goes katacontainers.io/blog/Kata-Co...