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

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...

Few days away from leaving for #toorcamp I'm going to post on a few platforms and see which gets the most hits. I'm super nervous the answer is going to be "meet us at 40m"

k8s security training. People asking me what they should do to learn about kubernetes security well here you go.

Jay Beale@neutrino.bsky.social

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

Idk how many times I've installed Obsidian at this point. I think at least 25. Only to uninstall no more than 5 days later.

I get very frustrated when feel like I can see a really different future of infosec and yet at the same time I'm fiddling with legacy paradigms and old thinking. There are two types of security teams right now, legacy and forward looking. Which teams have you seen that are turning the corner?

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. 🚨

github.comCVE-2026-4342: ingress-nginx comment-based nginx configuration injection · Issue #137893 · kubernetes/kubernetesCVSS Rating: 8.8 (Medium) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuratio...
Tabitha Sable@tabbysable.bsky.social

I did say that! Ingress-nginx *is* an infinite CVE piñata! You hit it with a stick and vulns fall out 😁

The irony that a k8s seccomp generation tool had an overly restritive seccomp policy _on itself_ causing it to crash and not generate seccomp profiles, is a fantastic example of the problem. Thanks.

Yeah, but does your city have...

News10NBC@news10nbc.bsky.social

HAPPENING TODAY: A giant inflatable colon is coming to the Rochester Central Library to raise awareness for colorectal cancer screening. https://www.whec.com/top-news/happening-thursday-giant-colon-at-library-pab-asks-for-feedback-and-future-of-school-no-7/ 

A quick video of the current home of Rochester 2600. Thanks to Forrest. Not shown here: The earthquake button that simulates what it would be like working for a tech company in San Francisco.

I always exhaust myself putting together a talk and the cycles are always the same: * I have a good idea * Write out talk for idea * I hate my idea * Smash head against keyboard, write dozen new tools, hack previous slides to shambles, throw gibberish placeholders into a new deck * ... * Present

Seccomp container profile bypass: runc casts your seccomp's errnoRet to int16 before passing it to libseccomp. errnoRet=65536 > int16(0) > SCMP_ACT_ERRNO(0) > kernel returns 0 errors == syscall goes from blocked to allowed

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.

techcrunch.comInside the story of the US defense contractor who leaked hacking tools to Russia | TechCrunchThe former boss of a U.S. hacking tools maker was jailed for selling highly sensitive software exploits to a Russian broker. This is how we first learned of his arrest, reported the story, and some of...

Please submit all Cries For Help as a Jira ticket and a member of our team will triage and then ignore you within 5 business days.

My BSidesSF talk was accepted! I've always had a lot of respect for this con so I'm excited to be chosen. Details aren't out yet but I still get really psyched and nervous for talks like this. LFG

Good morning Vitamin D deficiency. Where's the Andrew Huberman protocol for when you haven't seen the sun in 3 months and your country is collapsing. Zinc?

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...

theregister.comSecurity researcher finds 287 Chrome extensions leaking data: Add-ons with 37M installs leak visited URLs to 30+ recipients, researcher says

People growing their mustaches out right need to understand that you have a responsibility to have the personality of that face.

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.

Sometimes I think I like sandboxes mostly because compliance doesn't consider them an "endpoint". Not seeing an edr binary running in my process list:

Just remember when you decide to cargo-cult that thing from your last company, there was a reason you left that company. 😶‍🌫️

I subscribed to get text alerts for Claude's status on outages... This was a mistake. How many 8's is the uptime on this thing?

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...

Mark Manning reposted