Lennart Koopmann Profile Banner
Lennart Koopmann Profile
Lennart Koopmann

@_lennart

Followers
4,813
Following
2,364
Media
12,198
Statuses
53,199

Building @nzyme_defense // Leichtes Wirkmittel 30+

Houston, TX
Joined January 2008
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@_lennart
Lennart Koopmann
6 years
love it when the Roomba eats the security camera cable
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@_lennart
Lennart Koopmann
7 years
Is this a good moment to ask myself why my lightbulb started talking to a TOR exit node on UDP port 123 this morning?
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@_lennart
Lennart Koopmann
3 years
absolutely didn’t just eat my sock @darth
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@_lennart
Lennart Koopmann
3 years
We've mitigated the Log4J vulnerability for our users and customers. New releases now available! v3.3.15, v4.0.14, v4.1.9 and v4.2.3 ready for download. Super proud of the whole team that tackled this issue today and immediately delivered the fixes.
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@_lennart
Lennart Koopmann
4 years
haha, we've gone full circle lol
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@_lennart
Lennart Koopmann
7 years
First prototype of rogue AP detector! This works *WITHOUT* sniffing deauth frames or BSSID whitelists. Will include in my @DerbyCon talk.
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@_lennart
Lennart Koopmann
4 years
currently not answering any questions about if I have lost my mind or not
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@_lennart
Lennart Koopmann
6 years
@RowanWuff @shortxstack mine was gone once and I couldn’t find it. turns out it ate a sock under the couch but I was seriously concerned that it escaped through the open door and rode into the sunset on the street
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@_lennart
Lennart Koopmann
4 years
caught the new ISS cross-band FM repeater during tonight’s orbit over Houston, TX 437.800 MHz 🔈
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@_lennart
Lennart Koopmann
3 months
I forgot that I ordered this ages ago
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@_lennart
Lennart Koopmann
8 years
I installed @SwiftOnSecurity 's Sysmon config, explained it and suggested some changes:
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@_lennart
Lennart Koopmann
4 years
COVID-19 strategy update
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@_lennart
Lennart Koopmann
3 years
neighbors got a new printer
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@_lennart
Lennart Koopmann
4 years
first puppucino was a success
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@_lennart
Lennart Koopmann
2 years
After more than 10 years, my last day at Graylog will be Jan 1st. Happy to see how much this company has grown and how many great people work here today. I'm starting something new!👀Excited about things to come.
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@_lennart
Lennart Koopmann
3 months
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@_lennart
Lennart Koopmann
3 years
jesus christ is everybody thinking about their hydration plan for DEF CON??
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@_lennart
Lennart Koopmann
4 years
lmao if you try to get away with a Pwnagotchi or Pineapple ever again (phone connects to Pi, Pi connects to nzyme leader via LoRa for wide-area tracking of a target without relying on WiFi in an environment under attack)
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@_lennart
Lennart Koopmann
5 years
made a friend on the last stretch of 100 miles October
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@_lennart
Lennart Koopmann
3 years
Raised $18 million to build more good stuff! Excited about what's next.
@graylog2
Graylog
3 years
We completed our $18 million equity round. Looking forward to our continual growth. Read on for more details
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@_lennart
Lennart Koopmann
7 years
oh it's using the Open WRT NTP pool. That makes sense.
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@_lennart
Lennart Koopmann
5 years
protip: if you like your stuff ordered and don’t need the really good Pelican cases, then DeWalt TSTACK and foam inserts might be a cheap option.
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@_lennart
Lennart Koopmann
3 years
Woken up at 5am by a woman screaming for help in hotel room next door, called security and they just BUSTED that door in, getting her out of there?? at least I’m awake now
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@_lennart
Lennart Koopmann
4 years
here is something you could do during all this new free time you might experience: learn /sbin/ip and stop using /sbin/ifconfig
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@_lennart
Lennart Koopmann
2 years
That new OSX-only, signup-requiring, metrics-transmitting, "reinvented" Terminal "written in Rust" has raised $23m lmaaoooo
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@_lennart
Lennart Koopmann
4 months
Update: I'm now using the Mozilla Public Suffix List to identify parts of the domain that third parties can register their own domains below. It's called a "eTLD" or "effective top-level domain". For example, "us-east-1.amazonaws .com" is a eTLD because there are individual
@_lennart
Lennart Koopmann
4 months
What would you call the "azure-api .net" part of "xpay-apim-prod-centralus-01.regional.azure-api .net"? (just an example. nothing special about that host) I'm thinking "Domain Base"? "Root Domain" is confusing.
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@_lennart
Lennart Koopmann
4 years
in other big news, after a little bit of a rescue operation, she needs a name!!
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@_lennart
Lennart Koopmann
21 days
@mattlanza this is the most ominous tweet in a while (I am going to walk outside and listen)
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@_lennart
Lennart Koopmann
3 years
To keep my programming skills from completely disappearing, I've spent a bunch of free time over the last years to build a new version of nzyme. It's a pretty complete open WiFi defense system and available now! Have fun!
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@_lennart
Lennart Koopmann
14 days
There are “tech” companies today where almost the entire c-level staff has never clicked once in their own product. They will say they are “not technical” or they “don’t need to”. Run. They are slowly driving the business into the ground, with one strategic mistake after
@jeff_weinstein
Jeff Weinstein
14 days
hadn’t seen this; quite good.
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@_lennart
Lennart Koopmann
6 years
looking something up WHEN SUDDENLY
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@_lennart
Lennart Koopmann
6 years
Browser extension compromised. Not sure who of your users has it running? Manage osquery through the new Graylog Sidecar, configure queries centrally, roll them out automatically and restart osqueryd on all endpoints. Then use Graylog to find affected endpoints. Yepp. <3
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@_lennart
Lennart Koopmann
5 years
tried to log into health insurance employers portal, got the path slightly wrong and OH GOD
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@_lennart
Lennart Koopmann
4 years
Windows people! What's the way to use SSH in 2021? Powershell and that ominous Linux subsystem? I'm really allergic to Putty and I want a good terminal emulator.
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@_lennart
Lennart Koopmann
5 years
Took my drone as high as I can in this airspace and looked at the Deer Park refinery fire. Be safe everyone!
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@_lennart
Lennart Koopmann
7 years
Here we go! Introducing Nzyme: Wifi Monitoring, Intrusion Detection And Forensics
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@_lennart
Lennart Koopmann
6 years
In Graylog v3.0, you'll be able to manage and configure any kind of (whitelisted) remote process without ever logging in to the remote host. Notice "auditd" in the GIF? Next: sysmon. It's up to your setup! All GUI. So proud of this team. v3.0 is going to be such a leap forward!
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@_lennart
Lennart Koopmann
21 days
I don't want to jinx it, but I have been peeling apart Bluetooth Low Energy frames all afternoon and I think I can reliably identify devices in Apple Find My (like AirTags) with the new @nzyme_defense Bluetooth subsystem
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@_lennart
Lennart Koopmann
5 years
cheers from the new Houston HQ
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@_lennart
Lennart Koopmann
3 years
update from the weekly phone call with my parents: my dad's cardiologist is no longer allowed to practice after spreading COVID misinformation and also they made schnitzel today and it has been raining all weekend
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@_lennart
Lennart Koopmann
4 years
*double checks that German passport is indeed in the drawer*
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@_lennart
Lennart Koopmann
4 years
I have very bad news for the plumbing in this house because the bath tub faucet handle (??) was just pushed out by ice
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@_lennart
Lennart Koopmann
3 years
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@_lennart
Lennart Koopmann
3 years
fine
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@_lennart
Lennart Koopmann
5 years
👌 Graylog datacenter ready to ship to Nevada for DEF CON!!
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@_lennart
Lennart Koopmann
2 years
@DylanFedericoWX @IntelCrab SAVE THE KITTEN DYLAN FEDERICO
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@_lennart
Lennart Koopmann
6 years
@SwiftOnSecurity a German satirist with a verified account renamed himself to a reputable German TV station a few weeks ago and pushed a false story that made it into all the news outlets
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@_lennart
Lennart Koopmann
3 years
@darth posting young Miller again
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@_lennart
Lennart Koopmann
3 years
wrong
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@_lennart
Lennart Koopmann
3 years
TIL
Tip: most shipping labels are heat printed, which means you can use a heat gun or torch to black them out rather than trying to tear them off:
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@_lennart
Lennart Koopmann
3 years
Over Christmas 2019, my father looked at me and out of nowhere said "maybe your generation is the first where not everything always keeps getting better" and I think about that once a month
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@_lennart
Lennart Koopmann
4 years
we quickly emergency-coordinated tonight and guaranteed that company pays for hotel rooms for employees in dire straits or that they can camp out in office (which has water, heat and power) if hotel rooms are unavailable ✌️
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@_lennart
Lennart Koopmann
5 years
REMEMBER when I got drunk two weeks ago with my friend and I promised her that I’ll go to her pole dancing class? WELL. we keep promises here and that’s us
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@_lennart
Lennart Koopmann
3 years
awesome run through the rain
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@_lennart
Lennart Koopmann
6 years
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@_lennart
Lennart Koopmann
7 years
WiFi blue team reporting in
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@_lennart
Lennart Koopmann
3 years
my parents made me a birthday cake and sent me a picture of it 😂🙏😷
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@_lennart
Lennart Koopmann
4 years
here we go. terrible quality because I don’t have sparr electricity to download video from the drone you can clearly see how whole parts of the city are out of power, including mine
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@_lennart
Lennart Koopmann
6 years
this fostered, neutered and vaccinated boy in my house is up for adoption in Houston, TX. he is very nice and eats a lot of cat food
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@_lennart
Lennart Koopmann
6 years
#10YearChallenge 2009: mkdir graylog; git init 2019:
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@_lennart
Lennart Koopmann
6 years
you know what else is really cool about a non-Macbook? All the WiFi shenanigans adapters just work.
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@_lennart
Lennart Koopmann
6 years
who else is excited for v3.0.0?
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@_lennart
Lennart Koopmann
5 years
MESSAGE TO THE CORONAVIRUS: for the first time in 31 years I have abs and I will not let you take me out now
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@_lennart
Lennart Koopmann
2 years
Green Card: Approved! 🫡 🥹
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@_lennart
Lennart Koopmann
2 months
Me (an intellectual): Buying more $CRWD because it is clearly running on all critical systems around the entire world
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@_lennart
Lennart Koopmann
4 years
foster cat update: this is how I woke up
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@_lennart
Lennart Koopmann
4 years
we did it!!! county next door is ahead of schedule and opened a bunch of doses for everyone without requirements
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@_lennart
Lennart Koopmann
20 days
yes
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@_lennart
Lennart Koopmann
20 days
can we detect and identify unpaired Find My devices??
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@_lennart
Lennart Koopmann
6 years
bringing some firepower to @BlueTeamVillage and my Demo Labs #summercamp
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@_lennart
Lennart Koopmann
3 years
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@_lennart
Lennart Koopmann
3 years
What's a simple internal ticketing solution that doesn't suck? JIRA is just too complex. I want a task, a type of the task, a due date and who owns it. People who request things have a simple form to create a ticket. I don't want Trello. I want it hosted.
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@_lennart
Lennart Koopmann
7 years
Tourists taking pictures in front of Trevor memorial!! #trevorforget @DerbyCon
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@_lennart
Lennart Koopmann
6 years
a bunch of kids flipped their car into the fiber line, ATT is fixing it for two days now and Alexa has no internet so I have to turn the lights off with a manual switch like a goddamn caveman
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@_lennart
Lennart Koopmann
3 years
CRIMINAL
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@_lennart
Lennart Koopmann
3 years
Nzyme WiFi Defense System v1.2.0 is out!! Tons of new features.
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@_lennart
Lennart Koopmann
2 years
I’m starting to think about a plan for DEF CON / Vegas. Who is going??
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@_lennart
Lennart Koopmann
4 years
oh no a new wifi popped up in the neighborhood. "Bedroom speaker" (Security: NONE)
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@_lennart
Lennart Koopmann
3 years
sounds like heavy sexual violence against a sex worker. they are taking care of her and got his ass
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@_lennart
Lennart Koopmann
3 years
eeyyoooo so who *is* in Vegas next week?
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@_lennart
Lennart Koopmann
7 years
I just released a new blog post: Common WiFi Attacks And How To Detect Them
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@_lennart
Lennart Koopmann
3 years
fuck it, posting young Miller again
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@_lennart
Lennart Koopmann
9 years
wow, this Tesla commercial!
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@_lennart
Lennart Koopmann
3 years
@AccidentalCISO ahhh it’s my time to shine again feierabendaufgabenbesorgnisabschalteverhinderungsgefühl
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@_lennart
Lennart Koopmann
2 years
forgot to fire the fact checking guy and got it removed now lol this is so messy
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@_lennart
Lennart Koopmann
3 years
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@_lennart
Lennart Koopmann
3 years
One year at home! 🎉
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@_lennart
Lennart Koopmann
3 years
the most interesting thing about NFTBay is the browse button and that all those NFTs look like absolute shit??
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@_lennart
Lennart Koopmann
3 years
thinking about her
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@_lennart
Lennart Koopmann
3 years
if nothing else, maybe be grateful for a moment if you are in a safe and warm house tonight
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@_lennart
Lennart Koopmann
1 month
I am performing a maneuver
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@_lennart
Lennart Koopmann
6 years
Please don't configure "graylog @graylog .org" as Graylog alert receiver address because they'll end up in my SPAM folder. :D
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@_lennart
Lennart Koopmann
3 years
Ohhhyeahh!! @graylog2 Illuminate for Sysmon is out!! 🙏 Great work by the team.
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@_lennart
Lennart Koopmann
7 years
OH "party starts later because the whole Graylog team got lost in the MGM lazy river" #defcon
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@_lennart
Lennart Koopmann
4 years
standby, we are opening up a bunch of new engineering positions this week!!
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@_lennart
Lennart Koopmann
3 years
talked to police and it must have been pretty serious. take care of each other ✌️
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@_lennart
Lennart Koopmann
3 years
and this is for @graylog2 , should have probably mentioned that lmao
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@_lennart
Lennart Koopmann
4 years
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@_lennart
Lennart Koopmann
2 years
I've decided what I'll do next. I'll be working on open source nzyme v2.0 full-time, extending it with Ethernet support and porting all the WiFi stuff to an entirely new architecture. Have an office already and a huge list of tasks that I'll make public soon. Exciting times!
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