iiinova — where your digital self keeps evolving

Calle Svensson @zetatwo.bsky.social · 27/09/2026

Back on the dating apps since a few weeks back and I feel like this could be a much less painful experience if people afforded each other just a modicum of treating each other like actual living people.

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Reposted by Calle Svensson

arXiv @arxiv.bsky.social · 23/09/2026

arXiv has received a 17.2 million investment from three leading philanthropic organizations. Thank you to Simons Foundation International, Siegel Family Endowment, and XTX Markets for your support of arXiv! Read more: blog.arxiv.org/2026/09/23/arxiv-receives-multiyear-investment/

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Calle Svensson @zetatwo.bsky.social · 20/09/2026

I have recovered my old site including my poems that I wrote in my teens. I'm torn on what to do about this because on one hand, some of them are not completely terrible but on the other hand, the themes are exactly what you would expect from an awkward and edgy teenager. :D

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Calle Svensson @zetatwo.bsky.social · 13/08/2026

Come work with me at XTX in London! Small team with a lot of autonomy at a workplace with great colleagues and benefits: www.xtxmarkets.com/job/?role=Se... Please reach out if you have any questions about the role or company!

xtxmarkets.com

Job Description | XTX Markets

XTX Markets is a leading algorithmic trading firm which uses state-of-the-art machine learning technology to produce price forecasts for over 50,000 financial instruments across equities, fixed income...

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Calle Svensson @zetatwo.bsky.social · 27/07/2026

Fresh hot PagedOut issue! As usual, I have written an article, this time about using some maths for obfuscation. This is the concept that was the basis for my Google CTF 2024 challenge, "Not Obfuscated". Check it out together with all the other great articles!

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Calle Svensson @zetatwo.bsky.social · 24/06/2026

While I don't necessarily agree with everything, I think this is the AI article that resonates the most with me that I've read so far. Very well written and realistic stance on the challenges.

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Calle Svensson @zetatwo.bsky.social · 19/06/2026

As a Swede living abroad, today is the day where my workday is enhanced by a steady stream of pictures of friends dancing, singing, eating and drinking. Glad midsommar, everyone! ❤️🌞

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Calle Svensson @zetatwo.bsky.social · 03/05/2026

I'm once again looking for a friend willing to proof-read my latest article. Ideally someone with some reverse engineering and maths knowledge.

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Calle Svensson @zetatwo.bsky.social · 16/03/2026

My @REverseConf talk about reverse engineering #AoE2 is now available on YouTube: www.youtube.com/watch?v=Dp-I... check it out and hear about some reverse engineering techniques and a code pattern matching tool I released: github.com/ZetaTwo/bnil...

youtube.com

RE//verse 2026: Reversing AoE 2: Upgrading tools from Dark Age to Castle Age by Carl Svensson

YouTube video by REverse Conference

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Calle Svensson @zetatwo.bsky.social · 03/03/2026

Happy to announce that @livectf.bsky.social will be a part of this next generation of DEF CON CTF. Looking forward to work with BBB on bringing our new crazy ideas on CTF as a spectator sport to life!

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Calle Svensson @zetatwo.bsky.social · 19/02/2026

Check out my new article on obfuscation (and all the other cool articles) in the latest issue of PagedOut!

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Calle Svensson @zetatwo.bsky.social · 09/01/2026

Really looking forward to share my work on #AgeofEmpires with you all and to visit the conference.

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Calle Svensson @zetatwo.bsky.social · 03/11/2025

I have now been a year in the UK. It's been pretty cool so far. Let's see what the next one holds in store.

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Calle Svensson @zetatwo.bsky.social · 19/10/2025

Finally managed to sit down this weekend and finish #flareon12. The last one was a bit of a struggle and I made a lot of mistakes but got there in the end. Thanks a lot Nick Harbour and team for another successful edition. Looking forward to write-ups.

Screenshot of the FlareOn challenge page showing that I completed this years challenge and got 156th place.

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Calle Svensson @zetatwo.bsky.social · 10/10/2025

I needed a bit more oomph for #flareon12 challenge 9.

A cropped screenshot from the AWS EC2 console showing an instance of type m7i.24xlarge, a 96 core VM

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Calle Svensson @zetatwo.bsky.social · 09/10/2025

Mark published some really nice analysis of the @livectf.bsky.social AI solves, check it out!

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Calle Svensson @zetatwo.bsky.social · 06/10/2025

In case you haven't tried it yet: Time-Travel Debugging + @binary.ninja Binary Ninja integration is such a ridiculously powerful reverse engineering method.

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Calle Svensson @zetatwo.bsky.social · 04/10/2025

Come check out the latest issue containing my article on crypto code obfuscation and lots of other great entries!

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Calle Svensson @zetatwo.bsky.social · 03/09/2025

We're hiring! Specifically we're looking for a software engineer for our finance technology team for our office in London. Read more: www.xtxmarkets.com/job/?role=So... AMA about the company, living in London, etc.

xtxmarkets.com

Job Description | XTX Markets

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Calle Svensson @zetatwo.bsky.social · 22/08/2025

Fantastic article! Just a few months ago, I actually asked a large group of security professionals what the current up-to-date recommendation for this what. Sadly their responses varied mostly from "uh, idk" to "I still recommend CSRF tokens". Very nice to have a clear, well reasoned reference.

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Calle Svensson @zetatwo.bsky.social · 06/08/2025

I'm kinda tired of restaurants having 100 options and customisations, etc. I want to go to a 0 choice restaurant. I tell them that I'm allergic to peanuts and don't drink alcohol and then I just get served something. Would be amazing.

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Calle Svensson @zetatwo.bsky.social · 05/08/2025

Haven't listened to Yungblud before but got introduced to Zombie (via Anthony Vincent) and OMG, listening to that song is like being transported back to being 17. Absolutely beautiful video as well.

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Calle Svensson @zetatwo.bsky.social · 22/06/2025

After 1400 days I'm dropping my German Duolingo streak. It definitely helped me with the basics while I lived in Switzerland but that motivation is now gone. On to learning other things instead.

Screenshot from the Duolingo app showing a 1400 days learning streak and the mascot, Duo in a phoenix-like form.

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Reposted by Calle Svensson

Mark Griffin @seeinglogic.bsky.social · 20/06/2025

Had a great time talking with @zardus.bsky.social about getting started in cybersecurity: www.youtube.com/watch?v=n9QW... Primary thrust: Try something that interests you, then keep trying things. Every time, you'll either succeed, learn something, or meet new people, and this builds over time.

youtube.com

seeinglogic and zardus talk about getting into the cybersecurity industry

YouTube video by pwn.college

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Calle Svensson @zetatwo.bsky.social · 11/06/2025

Does anyone have recommendations for any high quality discussion groups or communities for defensive security? Security engineering, detection engineering, DFIR, etc? Feels like there's an abundance of offense but not so much other stuff.

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Calle Svensson @zetatwo.bsky.social · 05/06/2025

Saw @gianmarcosoresi.bsky.social (and Liam Nelson) tonight and now like half the muscles in my body hurt from laughing. Thanks for a fantastic performance!

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Reposted by Calle Svensson

David Buchanan @retr0.id · 11/05/2025

Stop Saying "Responsible Disclosure" www.da.vidbuchanan.co.uk/blog/respons...

da.vidbuchanan.co.uk

Stop Saying "Responsible Disclosure" | Blog

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Calle Svensson @zetatwo.bsky.social · 24/04/2025

After thinking about it for like five years I finally got around to starting learning to draw. Unsurprisingly it's very challenging but I enjoy it.

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Reposted by Calle Svensson

Mark Griffin @seeinglogic.bsky.social · 16/04/2025

@livectf.bsky.social just posted their challenges and the solutions from the DEF CON quals: github.com/Live-CTF/Liv... This means 6⃣ challenges to replay, with solutions from some of the best CTF teams in the world. Challenge-4 (sokobin) lets you push bits around on the stack to get the flag 🤯

github.com

GitHub - Live-CTF/LiveCTF-DEFCON33

Contribute to Live-CTF/LiveCTF-DEFCON33 development by creating an account on GitHub.

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Reposted by Calle Svensson

livectf.bsky.social @livectf.bsky.social · 10/04/2025

*tap*, *tap* This thing on? It's that time again! Prepare yourself for another DEF CON CTF qualifiers with a LiveCTF component this weekend! Thanks to @Nautilus_CTF for having us back and running another year! Keep an eye out here and at livectf.com for more details.

Calle Svensson @zetatwo.bsky.social · 08/04/2025

So, anyone putting together a Switch 2 hacking team and need a competent reverse engineer?

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Calle Svensson @zetatwo.bsky.social · 31/03/2025

Finally caught up a bit and got around to watching this. I think Freya is spot on and articulates very well the concerns a lot of us have. Well worth a listen! Thanks for making this!

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Calle Svensson @zetatwo.bsky.social · 29/03/2025

Check out my article on memory tracing in the latest issue of PagedOut, and all the other cool articles while you are at it.

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Calle Svensson @zetatwo.bsky.social · 21/03/2025

Really interesting and inspirational presentation by Markus. Can strongly recommend checking it out. Also I really need to figure out how to get to next year's RE//verse.

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Calle Svensson @zetatwo.bsky.social · 05/03/2025

I'm a Linux kernel noob. I'm creating a very simple CTF challenge and I wanted to allocate some executable memory from a kernel module. This does not seem to be straightforward anymore (reasonable). Is there any somewhat simple workaround?

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Calle Svensson @zetatwo.bsky.social · 24/02/2025

Things you don't want to hear from your doctor: "Ah, yes, I think this might be a rare variant of..."

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Calle Svensson @zetatwo.bsky.social · 02/02/2025

Anyone want to provide some feedback on a reverse engineering article I wrote?

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Calle Svensson @zetatwo.bsky.social · 13/12/2024

I'll be at #BSidesLDN2024 tomorrow. As someone new to London I'm looking forward to meeting the UK security community. Hit me up!

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Calle Svensson @zetatwo.bsky.social · 05/12/2024

Some of my all time favourites with the Hazbin Hotel soundtrack as a newcomer.

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Calle Svensson @zetatwo.bsky.social · 04/12/2024

Where in the UK do I buy replacement power plugs for small DC plugs (routers, etc.) which won't burn down my apartment? I.e. are CE marked or equivalent.

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Calle Svensson @zetatwo.bsky.social · 19/11/2024

Want to learn how to make IDA and Ghidra produce incorrect decompilation and learn a little bit about ELF files? Check out my article in the latest issue of PagedOut! I'm gonna check out the other cool articles.

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Calle Svensson @zetatwo.bsky.social · 07/11/2024

Well, I guess it's time to try this thing out.

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Calle Svensson @zetatwo.bsky.social · 07/11/2024

Need build system recommendation. I'm looking to orchestrate building a large number (50+) of docker containers and run some tests on them through some python scripts. I like things like Bazel where you explicitly specify the graph but the full hermicity gets in the way here.

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Calle Svensson @zetatwo.bsky.social · 27/10/2024

Learned another absolutely nasty Python trick today and I'm giddy over how beautiful it is.

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Calle Svensson @zetatwo.bsky.social · 24/10/2024

If anyone knows someone who is looking for an apartment in central Zürich, please send them my listing: www.homegate.ch/rent/4001486594 I'm getting pretty stressed out about this since I'm leaving the country in about a week and haven't found a new tenant.

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