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Jeff Moss Profile
Jeff Moss

@thedarktangent

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110,056
Following
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Founder Black Hat & DEF CON. CISA Cyber Security Advisory Council, UK Gov Cyber Advisory Board (He/Him)

Seattle
Joined May 2008
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@thedarktangent
Jeff Moss
3 years
I was cleaning up and found this Mr. Robot FSociety mask that Rami Malek signed for me years ago at the Tribeca Film festival that @defcon put on. Great memories.
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@thedarktangent
Jeff Moss
3 years
We should nominate @dakami for the Internet Hall of Fame.
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@thedarktangent
Jeff Moss
3 years
Good news! Thanks to everyone’s support Dan Kaminski will be inducted into the Internet Hall of Fame during a December 14th ceremony. The livestream will happen 06:00-08:00 Pacific Time Zone (14:00-16:00 UTC):
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@thedarktangent
Jeff Moss
5 years
It would’ve been epic if Assange dropped WL decryption keys in the garbage and while being dragged to the police car yelled out “They're TRASHING our rights, man! They're TRASHING the flow of data! They're TRASHING! TRASHING! TRASHING! HACK THE PLANET!” What a missed opportunity.
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Jeff Moss
3 years
I’d really like to think about what a “Kaminski Award” might look like for Cyber / Hackers. I like the idea of honoring him. @alexstamos
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@thedarktangent
Jeff Moss
7 years
Cryptographers experiencing what hackers went through in the 90’s when the media redefines a key part of their identity into something else. “Oh you’re a crypto expert? Which ICOs did you back?”
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@thedarktangent
Jeff Moss
6 years
Please: If you write a blog, white paper, or anything that will be indexed and is useful make sure to add the date and YEAR.
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@thedarktangent
Jeff Moss
5 years
Thank you everyone who helped make #DEFCON 27 so memorable. I didn’t get to see everything I wanted, but what I did was impressive - a healthy and growing community of hackers. Prediction: #stickerlife and #pinlife will really take off next year.
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@thedarktangent
Jeff Moss
4 years
Hacking IS political
@fs0c131y
Baptiste Robert
4 years
Hacking should be political
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@thedarktangent
Jeff Moss
7 years
Sad to hear @JPBarlow passed away. I remember many years ago to get his attention and invite him to @defcon I hacked his voice mail machine and changed his greeting. Years later when we met IRL we had a laugh about it, and I hacked his phone Bluetooth and left my contact details
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@thedarktangent
Jeff Moss
2 years
I want to thank everyone for the fantastic support, I really do appreciate it and it shows the Goons we are recognized for our efforts to build an awesome hacking community. 🙏
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@thedarktangent
Jeff Moss
2 years
Goodbye Vegas! It was one of the most memorable and positive conferences ever, the sense of community was really authentic and the hacks amazing! We already have ideas for improving things next year, but first the Goons must sleep.
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@thedarktangent
Jeff Moss
5 years
Rally looking forward to this, it was a blast advising on season 4.
@whoismrrobot
Mr. Robot
5 years
It’s our last chance to save the world, friend. The Final Season of #MrRobot premieres 10.6 on @USA_Network .
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@thedarktangent
Jeff Moss
6 years
Happy Birthday to all the security peeps out there today! I was also born on 01/01
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@thedarktangent
Jeff Moss
3 years
1st I am heart broken and crushed about Dan. We are going to put together a YT video playlist of all the Dan Kamanski @dakami we can find, please DM @defcon any YT videos you know of not from DEF CON or Black Hat and we will add them. 1/2
@thedarktangent
Jeff Moss
3 years
We should nominate @dakami for the Internet Hall of Fame.
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@thedarktangent
Jeff Moss
6 years
And now I sleep.
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@thedarktangent
Jeff Moss
6 years
Thank you to everyone who made #DEFCON 26 an amazing year. It felt really good seeing old friends and making new ones. I regret missing Juno Reactor but am eagerly awaiting the video to share.
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@thedarktangent
Jeff Moss
2 years
Never a dull moment.
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@thedarktangent
Jeff Moss
2 years
On the road to Las Vegas for @BlackHatEvents , @defcon better not be cancelled.
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@thedarktangent
Jeff Moss
3 years
We had a fantastic @defcon 30 pre-planning meeting in Vegas, the new location should help centralize things, three venues instead of five, and a big out door space. More announcements soon but it’s looking good!
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@thedarktangent
Jeff Moss
2 years
Today is the day, @defcon torrents just dropped on
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@thedarktangent
Jeff Moss
4 years
So far #DEFCON Safe Mode has been amazing for me. I’ve “seen” so many friends, participated in panels, watched movies with group chat and told war stories. As usual I’m seeing a few percent of everything happening, and it has been really cathartic in these stressful times!
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@thedarktangent
Jeff Moss
4 years
#DEFCON is getting crazy close now. We are in full con mode. Released the torrent file with all the Safe Mode Main Stage talks, Demo Labs, and the Safe Mode Sound Track! Get and watch / listen now!
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@thedarktangent
Jeff Moss
7 years
Found this in Ito-ya in Ginza. Tear off USB sticks.
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@thedarktangent
Jeff Moss
2 years
A lot of the content from #DEFCON 30 is going online at (and on the .onion site) as it becomes available. I’m currently working on all the live music audio and videos. Have anything you want added to the archives? DM me a link!
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@thedarktangent
Jeff Moss
4 years
So Much Happening Virtually Physically Politically Emotionally Remember it’s OK to rate limit yourself.
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@thedarktangent
Jeff Moss
2 years
Entering the #DEFCON @HackerJeopardy room was pretty epic with all the beach balls and energy:
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@thedarktangent
Jeff Moss
3 years
In a few days we plan to gather on the DEF CON discord to tell stories and have a drink. Everyone is invited, more details in the days to come, it will be a community effort.
@thedarktangent
Jeff Moss
3 years
We should nominate @dakami for the Internet Hall of Fame.
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@thedarktangent
Jeff Moss
3 years
A friend sent me this a couple weeks ago, letting me know how their day was going. Looks like a lot more have having the same experience recently.
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@thedarktangent
Jeff Moss
2 years
Post con espresso in the correct glass. The #DEFCON decompression is well underway.
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@thedarktangent
Jeff Moss
7 years
I don't have hobbies, I have servers.
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@thedarktangent
Jeff Moss
3 years
The Internet Hall of Fame application for @dakami was submitted just before the deadline on the 7th. Thank you to @letoams @cyberinvasion Steve Crocker @vgcerf @mikko for all supporting and helping make it happen. Now we hope for the best!
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@thedarktangent
Jeff Moss
4 years
I’ve been up for about 24 hours, so it is time to crash. Most of you don’t know but I’m still in Singapore. I came here to plan DC China and stay until BH Asia. Both got moved and I’m still here. 🙃 It’s 06:42 AM. Thank you everyone for your understanding and support. 🙏🙏💤💤
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@thedarktangent
Jeff Moss
4 years
Help! Do I know anyone at eBay? Our eBay account has been automatically restricted, and due to COVID there is no phone or chat support. The DEF CON is Canceled shirts had too many sales too fast and angered the algorithm!
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@thedarktangent
Jeff Moss
5 years
The insider sale of .org to ex ICANN senior execs working for a VC firm is a perfect example of a failure mode of the Multi-stakeholder Model and is really frustrating. If .org was for sale why not go to the open market and get the absolute, best hugest price?
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@thedarktangent
Jeff Moss
3 years
With Alibaba punished by the CCP for reporting the log4j bug to the Apache Foubdation first I wonder if there is an OSS license angle. Could OSS licensees require reporting of bugs, the opposite of the China security law? Would that help or hurt?
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@thedarktangent
Jeff Moss
5 years
It’s about to get really crazy over the next 1-2 weeks in the States as everything comes to a boil. I’m very frustrated and a bit depressed that even with 2 months of warning the level of failure is enormous. I want everyone to take it seriously and take care if yourself + family
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@thedarktangent
Jeff Moss
2 years
If this place burns down Friday we @defcon are working to set up a Mastodon at . It will take time but a test server should be up in a week.
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@thedarktangent
Jeff Moss
6 years
Like a “deep fake” for cars.
@hackermaderas
ΜΔDΞRΔS
6 years
#CyberpunkisNow The Blackbird is used as a stand-in for many cars advertised in US car commercials as it is capable of maneuverability many of the cars that replace it visually (via CGI) do not have.
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@thedarktangent
Jeff Moss
3 years
I had the honor of writing a forward to @mikko new book, Internet. If only I could read what I wrote!
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@thedarktangent
Jeff Moss
5 years
For those who work with Windows two of my “go to” tools for a new install are O&O Shut Up to massively restrict the telemetry and data collection, and O&O App Buster to remove all the spammy apps that are pre-installed and in-installable.
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@thedarktangent
Jeff Moss
3 years
When I got married in Singapore 11 years ago Dan was one of five friends who did a last minute YOLO and flew out to be one of my groomsmen. If you don’t know Chinese wedding traditions let’s just say there are shenanigans the bridesmaids make you endure. There is video evidence😂
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@thedarktangent
Jeff Moss
8 years
Just got an email from a privacy startup with a hidden tracking pixel inviting me to participate in a privacy seminar. No 🙅‍♂️
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@thedarktangent
Jeff Moss
3 years
At this point HTTP 1.1 and port 80 exists only to serve 301 redirects to H/2 or H/3 on 443. Interesting transition.
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@thedarktangent
Jeff Moss
2 years
I’ve been sorting old boxes from the #DEFCON office and found my old AT&T 3600-D (D for DES) voice encryption boxes along with the module to match the handset. I saw @mattblaze post a picture of one last week. Maybe we could call each other if only we could find a land line.
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@thedarktangent
Jeff Moss
4 years
Anyone else refuse to click google amp links on principle?
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@thedarktangent
Jeff Moss
4 years
Taxi driver in Singapore displaying all of their negative COVID tests:
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@thedarktangent
Jeff Moss
7 years
I can't wait for IoT coffee pots to start issuing HTTP status code 418.
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@thedarktangent
Jeff Moss
5 years
The .zpaq compression tool is pure alien technology. A 4,951 Meg file compresses down to 471 Megs with Rar best mode and a 1 gig dictionary. zpaq compresses it down to 185 on max mode! Then again it takes over an hour to decompress on a 4Ghz Xeon.
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@thedarktangent
Jeff Moss
7 years
Whenever a Tesla gets to close behind me my laser detector goes off, they must be using the same frequency as laser speed guns. Then my laser jammer fires off. I wonder what the Tesla makes of that.
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@thedarktangent
Jeff Moss
4 years
Someone destroying the panic buttons before the insurrection definitely needs investigation.
@jazmineulloa
Jazmine Ulloa
4 years
AOC telling Instagram viewers tonight that she had “a close encounter” during the Capitol insurrection in which she thought she might die makes this detail from Ayanna Pressley’s chief of staff in our rebuilding of events all the more chilling.
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@thedarktangent
Jeff Moss
3 years
Don’t collect it if you can’t protect it.
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@thedarktangent
Jeff Moss
5 years
Soo much happening. This year is epic! I’m hoping to make it to more villages today.
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@thedarktangent
Jeff Moss
4 years
Interested in #DEFCON Safe Mode this year? It’s free. check out: and
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@thedarktangent
Jeff Moss
4 years
Current mood:
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@thedarktangent
Jeff Moss
3 years
Every time someone shows me a #DEFCON tattoo it reinforces my desire to keep it real and not f*ck it up!
@Lt_Dans_leg
Lt Dan's Legs
3 years
Sad that it's over but I had a blast, new tattoo to remember it by! @thedarktangent #defcon #defcon29
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@thedarktangent
Jeff Moss
3 years
Once you make the leap from criminal to political don’t be surprised if you get a political response. They tend to be pretty severe.
@BleepinComputer
BleepingComputer
3 years
Groove ransomware calls on all extortion gangs to attack US interests - @LawrenceAbrams
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@thedarktangent
Jeff Moss
3 years
Normally I’d be really chatty right before #DEFCON and Black Hat but this year is, well, different. So many things behind the scenes happening that would normally have been sorted out weeks ago.
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@thedarktangent
Jeff Moss
6 years
Off to Las Vegas for a #defcon pre-con site visit. By adding Planet Hollywood we will have some cool new spaces to explore.
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@thedarktangent
Jeff Moss
5 years
Already had a great #DEFCON 28 CTF planning meeting with @oooverflow and walked the three hotels for next year. Now it is time for food!
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@thedarktangent
Jeff Moss
4 years
Some good art from Neil capturing the collective feeling of everyone:
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@thedarktangent
Jeff Moss
7 years
Saw this on the side of a bus in Singapore. I wonder how many people think it is some kind of safty blanket?
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@thedarktangent
Jeff Moss
4 years
Job: Senior Cyber Incident Response/Threat Analyst for the Biden Campaign. Imagine the threat hunting! Remote /Philadelphia, PA HQ /Full-time. Apply before the weekend please.
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@thedarktangent
Jeff Moss
2 years
Where are all the airline inflated emergency practice slides? I’d expect to find novelty amusement practice slides at airports. I’d give it a go after a lifetime of watching videos about it.
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@thedarktangent
Jeff Moss
5 years
If SARS-CoV-2 is a glimps of the future battle space let’s build up “ventilator dominance”, make sure we don’t have a “PPE gap” and deploy maximum “isolation ward throw weight” and a “vaccine Manhattan project” There. With the right buzzwords it should be palatable to DOD.
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@thedarktangent
Jeff Moss
3 years
I was at the Cybersecurity Collaboration Center today talking with some friends in D.C. and it was cool and encouraging to see this out on the waiting room table. Definitely would not have seen this 10 years ago.
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@thedarktangent
Jeff Moss
6 years
I thought I would watch some movies in the background while prepping for DEF CON. I watched War Games 2. Don’t do that.
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@thedarktangent
Jeff Moss
5 years
Remember a couple years ago when I was very negative on Tim Burners Lee and the W3C for allowing DRM into the spec with a non-unanimous vote? Well here is the beginning of the fallout of that decision:
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@thedarktangent
Jeff Moss
3 years
We should be dropping the #DEFCON Original Soundtrack on Tuesday to get everyone musically ready for the con. Virtually around the world or in-person hopefully it will inspire you!
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@thedarktangent
Jeff Moss
2 years
All the “smart contract” projects using @torproject as their transport backbone should build in a gas fee to help pay for more Tor development and capacity. How much? I don’t know but 0.5% seems reasonable? Help create the norm that financial projects pay their way.
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@thedarktangent
Jeff Moss
4 years
Do you have experience with giving technical (infosec / cyber) advice to executives or policy folks? Do you live in PA, NV, WI, FL, or GA? Democratic campaigns are looking for technical volunteers. Please DM me and I’ll try can get you in contact with the right folks.
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@thedarktangent
Jeff Moss
7 years
Every time I see someone who has gotten a #DEFCON tattoo I think to myself "Don't fuck it up, stay true, they will have that for life"
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@thedarktangent
Jeff Moss
8 years
Thank you everyone, such an amazing community that makes #DEFCON happen! It has evolved into much more than a party. Now ⌚ to eat and sleep
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@thedarktangent
Jeff Moss
6 years
The last year for #derbycon , this has got to have been an incredibly hard decision for @HackingDave and the whole crew. I have a lot of respect for Dave and the thought he puts into attendee experience.
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@thedarktangent
Jeff Moss
3 years
“If it can be collected, it will be collected.” Is this a “law” of the Information Age? It seems obvious but if not I claim it. It can go next to “If you can’t protect it don’t collect it.”
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@thedarktangent
Jeff Moss
4 years
I just checked my ballot status online, this is how Washington State does it with decades of experience in mail in voting:
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@thedarktangent
Jeff Moss
4 years
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@C_C_Krebs
Chris Krebs
4 years
Check out for solid info on election security #Protect2020
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@thedarktangent
Jeff Moss
4 years
A side project of mine is @infoconorg , an archive to try and preserve hacking (and some infosec) history. It is starting to go through a big update by adding related podcasts, skills, and mirrors for other sites and projects. This first big content update is almost 2k new videos.
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@thedarktangent
Jeff Moss
2 years
As I unpack from #DEFCON I discovered I had gotten a bottle of “Thermographic Detection Enhancement Sauce”
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@thedarktangent
Jeff Moss
4 years
I like what you are thinking! I see an opportunity for an AgriBusiness Hacking Village.
@MadameHoneyPot
Honeypot🌐
4 years
If anyone in #infosec wants to contact me on appropriate channels about taking a look at tractors IRL please do The fact we haven't been hacking tractors at DEFCON for the last decade is honestly a shame We feed us
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@thedarktangent
Jeff Moss
2 years
If Russia whispers in your ear (and fills your bank account) long enough pretty soon you see the world as they want you to see it.
@_JakubJanda
Jakub Janda 楊雅嚳
2 years
Czech Senate Foreign Affairs Committee Chair @PavelFischer take-aways from Berlin visit: “Many German politicians told us there is no military solution to situation in Ukraine.” “I often felt German citizen are much braver than some of German parliamentarians or officials.”
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@thedarktangent
Jeff Moss
5 years
Congratulations @RachelTobac on all your work helping raise awareness around voting machine security issues and may all of your demos work live.
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@thedarktangent
Jeff Moss
3 years
It’s good to be back in an advisory capacity at @DHSgov @CISAgov - More operationally focused then my past experience with HSAC so I’ll be able to contribute in different ways. @CISAJen is thinking big.
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@thedarktangent
Jeff Moss
5 years
You may be a system administrator or do log analysis if: Your dual time zone watch is set to local time and UTC/GMT time.
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@thedarktangent
Jeff Moss
3 years
Hoping @dakami makes it in!
@Internet_HOF
Internet Hall of Fame
3 years
Add the 2021 Internet Hall of Fame Awards ceremony to your calendar and tune in on December 14 to find out who our new inductees are! #IHOF2021 #Internet
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Jeff Moss
4 years
A new VBulletin Zero Day got dropped yesterday by @Zenofex that revealed the CVE-2019-16759 patch was incomplete - within three hours was attacked, but we were ready for it. Disable PHP rendering to protect yourself until patched!
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@thedarktangent
Jeff Moss
4 years
I don’t believe you can kidnap your way to social harmony.
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@thedarktangent
Jeff Moss
4 years
#DEFCON Safe Mode currently at 9,529 Members and 3,583 Online in LineCon.
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@thedarktangent
Jeff Moss
4 years
The first DEF CON network ran at 10 MBits & MTU size was 1500 and our current network runs at 10 GBits with the same MTU. Setting MTU to the max, 9000, is a 6x increase in size for a 100x increase in speed. I’m guessing average file size is more than 6x bigger since the early 90s
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@thedarktangent
Jeff Moss
5 years
Not sure what to make of this. Cover me Red 5, I’m going in.
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@thedarktangent
Jeff Moss
6 years
Interesting that Android 9 uses DoT (DNS over TLS) while Google Intra uses DoH (DNS over HTTPS) DoT is the better privacy solution, DoH still allows some meta data to leak. Both have some trade offs but the big ad companies seem to be lining up behind DoH.
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@thedarktangent
Jeff Moss
5 years
Normally I’m not this quiet but I’m really busy with planning for Black Hat and DEF CON, as well as a last minute announcement we hope to make in a week or so. It’s great reading about everyone’s plans!
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@thedarktangent
Jeff Moss
3 years
Happy New Year to everyone! It’s still early on the West Coast but friends in Europe already survived 2021.
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@thedarktangent
Jeff Moss
6 years
I’m wearing my Mr Robot hoodie today, Hacking at about 1/20th the speed of Elliot.
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@thedarktangent
Jeff Moss
5 years
Wow, the art submissions for @defcon China look great. I’ve added them to a thread on and have started a poll. Come vote for who will win!
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@thedarktangent
Jeff Moss
6 years
Listening to the @defcon 26 music mix on the headphones now. Well done everyone! Just loading to the on-site media server and then building the torrent. We’ll drop it Thursday of con.
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@thedarktangent
Jeff Moss
4 years
If it isn’t DNS, it’s ARP.
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@thedarktangent
Jeff Moss
3 years
I made it on-site and setup is going well, the DDV drives are duplicating and the con media server is already online. Now you order food to your room from any of the hotel restaurants too. Cool.
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Jeff Moss
4 years
I worry about all the incentives we have to focus on and amplify our divisions instead of on all the things that bring us together. How this election has resolved, despite the disastrous potential of deeply damaging our foundations, gives me great hope of a better future. 🇺🇸
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