Pinned ping

Hello, time for ! :)

I'm a networking geek and researcher living in Berlin, currently working on a PhD in Computer Science. On a technical level, I like access networks such as WiFi and mobile networks, I like measurement and understanding performance, and I do low-level user-space programming in C. I sometimes talk about science, free software, and tech communities, among other things.

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Since it was surprising to me that 127.257 and 2130706433 are pingable addresses, I wrote up my findings and a short explanations for people unfamiliar with how IPv4 addresses look under the hood:

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You thought you know IPv4 addresses? Let me tell you something:



I learnt today that IP addresses can be shortened by dropping the zeroes.
Examples: → http://1.1 → http://192.168.1
This bypasses WAF filters for SSRF, open-redirect, etc where any IP as input gets blacklisted.
#infosec #bugbounty #bugbountytip


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We trust you have received the usual lecture from your local System Administrator. It usually boils down to these three things:

#1) Women, especially women of color and trans women, built the foundations of most of your digital life.
#2) Before you try to help someone with a problem, make sure they actually asked for your assistance.
#3) Others' needs are more important than your convenience.

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I'm extremely pleased to launch Run Your Own Social: How to run a small social network site for you friends.

This is a guide book to running a small, tight-knit federated social network server. It comes from my year of experience running Friend Camp. It's focused largely on SOCIAL solutions, though it does touch on the technical.

I've tried to keep it technology-neutral, and it should be a pretty easy read for anyone who's been on the fediverse for a while.

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Hey! :) The Recurse Center is "funding Fellowships of up to $10,000 for women, trans, and non-binary people to work on programming projects, research, and art at RC this fall.

Apply by July 22nd and start August 12th or September 23rd."

This is an incredible opportunity – if you want to be part of a diverse, kind programming community, and spend three months focusing on projects close to your heart, this is your chance! Happy to answer any questions you might have! \o/

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sometimes i cant help but think that the mechanisms through which people are oppressed are a lot more flexible than the lenses through which we interpret them

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"On 10 April, astrophysicists announced that they had captured the 1st ever image of a #blackhole.

No headlines mentioned that the image would have been impossible without open-source software: #Matplotlib, a #Python library for graphing data.

Just 5 days later, the NSF rejected a grant to support that ecosystem, saying that the software lacked sufficient impact.

#opensource is widely acknowledged as crucially important in science, yet it is funded non-sustainably."

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GnuPG — "SKS Keyserver Network Under Attack":

"If you fetch a poisoned certificate from the keyserver network, you will break your GnuPG installation."

"High-risk users should stop using the keyserver network immediately."

#gnupg #gpg #keyserver #infosec #security #cybersecurity

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Would any Sex-worker be interested in giving a talk or workshop at our @PrivacyWeek conference?

It's a one-week conference about privacy, data-protection, GDPR and technology assessment organised by the non-profit Chaos Computer Club Wien in October in Vienna/Austria.


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Do you like these :queercat_pride: :QueerCatHeart_Pride: ?

Well, there's whole sets of them made by @moiety that you can grab and spread over the queeriverse*!


* term stolen from zigg

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Automated blocklist sharing Show more

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Dear IT-humans: Please do yourselves a favour and create security@ as an email address on all of your domains which is actually routed and read by someone with knowledge about your IT!
That way you make it easy for people who accidentally stumble upon security issues with your infrastructure to actually report them to you.

The sheer fact of having and reading security@ (as mandated by RFC 2142) will help improving your IT security.

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If you are a trans or non-binary person, your participation in this anonymous survey is appreciated! (and boost also appreciated!)

Name change for trans or non-binary people

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You've seen the QPoC Flag, yes? Well here's the QTPoC Flag!

I'll have an SVG available of this eventually, but feel free to save this and share it and whatever you want. The black outline is there because I'm gonna try to make a patch from it, but it's easy to remove once you have the SVG.

If you want a regular image without the outline, lemme know and I'll upload one here to the fediverse

#openSource #vector #qtPoc #PoC #QPoC #transPride #queerPride #publicDomain #pride #prideMonth #quiltbag

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The original thread has pictures, but it's over there... sigh. Also, kinda love the word "computress".

@megsylhydrazine: Before holding the title of "engineer," Poppy started with NASA as a “computress" (like many of the women at the space agency during her time). But unlike most in her day, she advanced to become a member of the technical team, and worked her way up into NASA's mission control.

@megsylhydrazine: By the age of 25, she was calculating the return-to-Earth trajectories for #Apollo8, first mission to leave Earth’s orbit and circle the Moon. She helped retrieve the #Apollo13 astronauts after the mid-flight disaster. And she worked on every other mission to the Moon in between.

@megsylhydrazine: ICYMI: @MAKERSwomen teamed up with #JodieFoster to create this great documentary that features the ascent of women in the US space program, including Poppy's story. Check it out: #NASA #WomenInSTEM <img>

@megsylhydrazine: Northcutt was born in Manny, Louisiana but grew up in Luling, Texas, where she went on to attend the University of Texas @UTAustin and study mathematics.

@megsylhydrazine: She chose math because it was a degree with which she could get “a man’s job … there were advantages to doing things where you could get paid more and avoiding women’s work,” she told Jane Ely in a 2008 interview for the Houston Oral History Project. Ref

@megsylhydrazine: Poppy graduated from @UTAustin in 3.5 years, and then went to work at TRW Systems (contractor to #NASA) for the Apollo program. TRW designed and built the descent engine for the lunar lander (among other projects). Poppy immediately went to work on “Apollo stuff” as she put it.

@megsylhydrazine: At first it was a lot of grunt work, but they soon promoted Northcutt from “computress” to a member of the technical staff, which she says was the general term for "engineer."

@megsylhydrazine: Northcutt was stationed in @NASA_Johnson Mission Control’s Mission Planning and Analysis room, just down the hall from the main Mission Control Center. She was the first woman to work in there as part of NASA’s Mission Control.

@megsylhydrazine: "I felt a lot of pressure because I was the only woman," Northcutt said in the PBS documentary. But that didn't stop her. "I started looking around at these dudes that were working with me and I thought, 'you know, I’m as smart as they are.'"

@megsylhydrazine: Northcutt meticulously studied the path that NASA had planned for the astronaut's path home. As she analyzed the plan, she began asking questions and finding mistakes that needed critical corrections.

@megsylhydrazine: To be continued... :)

@megsylhydrazine: In the leadup to #Apollo8, Poppy and her team had no small task: design the return-to-Earth trajectory to bring astronauts home. She started taking the computer program home every night, and reverse-engineered them. Before long, she was one of the few who read every line of code.

@megsylhydrazine: Despite the meticulous planning, Poppy and team needed to be at Mission Control to support. After all, it was humanity’s first crewed mission to reach lunar orbit, and the first test for a lot of onboard was also the first test of Northcutt and her team’s calcs.

@megsylhydrazine: Also, if there were any deviations, Northcutt and the rest of Mission Operations would have to make on-the-spot changes to the plan to ensure the astronauts’ safe return. E.g., if it took the astronauts too long to swing around the moon, it meant they had less fuel than expected.

@megsylhydrazine: As everyone waited for #Apollo8 to round the dark side of the moon and regain communication, Poppy recalled that "Everyone in the room is not breathing... Nobody's heart is beating. We're just totally still, waiting."

@megsylhydrazine: "Every second that they're late is just terrifying," said Poppy. A signal beeps...and comms with the capsule was restored. The mission was a great success! #Apollo8 returned to Earth safely on Dec 27, 1968, landing in the N Pacific Ocean. "And boy, did we have a splashdown party"

@megsylhydrazine: After #Apollo8, Poppy went on to support Apollo 10, 11, 12, and 13 as the RTCC or RTE (Retro) Program Specialist. Ref #womeninstem

@megsylhydrazine: During #Apollo11, a @ParisMatch reporter featured Poppy in an article, dubbing her the "Venus of Apollo." Ref

@megsylhydrazine: Fun Fact: Poppy Northcutt helped bring the #Apollo13 astronauts home after the mid-flight disaster when an oxygen tank exploded.

@megsylhydrazine: For #Apollo13, Poppy got to travel to FL to see the launch. She was just returning to TX when disaster struck. Her office phone began ringing in the emergency, but she hadn't returned yet. To add fuel to the fire, her personal phone # was...unlisted.

@megsylhydrazine: Of all people, it was @ABC reporter Jules Bergman who was able to reach Poppy w the emergency. She turned on the TV and saw the situation thinking, "I'd better go over there." Poppy went right into running free returns and looking into what it would take to get them back.

@megsylhydrazine: Regarding the computer program she supported: "It's used for nominal situations, but it was really developed for abnormal situations,” such as mission aborts. “It’s easy to come back nominally. #Apollo13 demonstrated that the program did exactly what it was designed to do.”

@megsylhydrazine: For her participation in helping with #Apollo13's safe return home, Poppy Northcutt was awarded the Presidential Medal of Freedom Team Award, along with the rest of the #NASA Mission Operations Team. @NASAhistory

@megsylhydrazine: A medal wasn't her only honor. She also has a crater on the moon named for her. It's called "Crater Poppy." And then #Apollo17, the last mission to land men on the moon, landed near Crater Poppy. #NASA @NASAhistory

@megsylhydrazine: Think that's it for Poppy? Hold on to your pants... Thanks to being one of the only women working in engineering, Poppy then became increasingly involved in the Women's Liberation movement. In 1974, the Mayor of Houston, TX named her the first "Women’s Advocate for the City."

@megsylhydrazine: In that role, Northcutt helped eliminate sex discrimination in the local fire department. She also helped pass a law that no longer allowed the state’s hospitals to charge women who came in for a rape kit <img>

@megsylhydrazine: While she was still working 30 hours a week at TRW/ #NASA, Northcutt attended law school in the evenings, graduating summa cum laude from the University of Houston Law Center @UHLAW in 1984.

@megsylhydrazine: Fun Fact: Much of her life's work has centered on #womensrights. Even as a young woman with TRW/NASA, she found ways to be involved. She became a member of NOW, the National Organization for Women, advocating for #equalpay, rights, and access for women. @NationalNOW #WomenInStem

@megsylhydrazine: After that, Poppy stepped out of the spotlight on #womensrights and became a criminal defense lawyer <img> “I might have been less visible in the Women’s Movement, but I was always involved in women’s rights one way or the other,” said Poppy.

@megsylhydrazine: Poppy became the first felony prosecutor in the domestic violence unit at the DA’s office where she worked. And if that wasn't enough, she continues to work and volunteer for several organizations in Houston, advocating for abortion rights.

@megsylhydrazine: For all that you've done, from one engineer to another, Thank you, @poppy_northcutt <img><img><img> #womeninstem #nasa

@megsylhydrazine: If you have access to @PBS, tune in July 8-10 for "Chasing the Moon," a 6-part documentary about the #spacerace (just in time for the 50th anniv of #Apollo11)....and among the features will be Poppy Northcutt. #chasingthemoonPBS #AmExperiencePBS

@megsylhydrazine: Thank you to @julia_bergeron for teaching me about the incredible @poppy_northcutt <img> If you've made it this far in the thread and are interested in finding more inspiring role models: @RocketWomen_ @WomenNASA @SWISEofficial @WikiWomenInRed @WomenInno @WomeninAero @MAKERSwomen

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Prison Abolition and dealing with "The Dangerous Few"

I found this super compelling and it resolves my only holdout argument against prison abolition.

#anarchism #ACAB #abolition

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We got “No access. No peace.” stickers to give away.

If you like some you can send me a private message.

[Box with 3000 stickers saying “No access. No peace.” With a wheelchair logo where the wheel is an anarchy A.]

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Design student creates a high-tech adjustable binder for trans people, which is apparently safer and easier to use than existing binding methods.

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"It’s strange, isn’t it? The ideology of capitalism is that it is a system that generates immense abundance (so much stuff!). But in reality it is a system that relies on the constant production of scarcity.

This conundrum was first noticed back in 1804, and became known as the Lauderdale Paradox. Lauderdale pointed out that the only way to increase “private riches” (basically, GDP) was to reduce what he called “public wealth”, or the commons. To enclose things that were once free so that people have to pay in order to access them. To illustrate, he noted that colonialists would often even burn down trees that produced nuts and fruits so that local inhabitants wouldn’t be able to live off of the natural abundance of the earth, but would be forced to work for wages in order to feed themselves. "

Degrowth: A Call for Radical Abundance

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