frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Frontier AI has broken the open CTF format

https://kabir.au/blog/the-ctf-scene-is-dead
69•frays•1h ago

Comments

walletdrainer•1h ago
>I started playing CTFs in 2021

>and the old game is not coming back

For many people the CTF scene was already dead in 2021 because it had turned into something unrecognisable.

In reality it’s just different.

lukan•1h ago
Well, I had to google what CTF means (capture the flag, a hacking competition), so surely cannot judge here, but the text indicates that with AI some things are very different today:

"That makes open CTFs pay-to-win. The more tokens you can throw at a competition, the faster you can burn down the board. Specialised cybersecurity models like alias1 by Alias Robotics are becoming less relevant compared to general frontier LLMs. The competition is turning into "who can afford to run enough agents, with enough context, for long enough.""

mock-possum•48m ago
Isn’t that the bitter lesson in a nutshell? “Specialised cybersecurity models … are becoming less relevant compared to general frontier LLMs.”
walletdrainer•10m ago
There are two different schools of thought:

1) It’s OK to do just about anything to win a CTF, including installing malware on the organisers computers months before the actual event so you’ll have an easy time stealing the flags.

2) It’s not ok to try and win the CTF with a solution the authors did not intend.

Recently the #2 crowd has been winning because the hacking scene has turned corporate and boring. People started to partake in CTFs in the hopes of landing a job(!)

CTFs are indeed ruined for those people, I personally don’t mind.

For the people in group #1 LLMs change little. Attacking the challenges directly was always a last resort.

Grimburger•42m ago
>Learning about eternal September in May 2026

Hits different doesn't it

deafpolygon•1h ago
Unrelated, but does anyone find this site incredibly hard to read?
walletdrainer•1h ago
Bizarre font and poor contrast, yep.

The text itself being exceedingly long for no obvious reason doesn’t help.

lukan•58m ago
Poor contrast? White on black?

And if you think it was too long, what part would you have shortened? I never knew about the scene and found it interesting to read this personal take on it.

tromp•1h ago
https://en.wikipedia.org/wiki/Capture_the_flag_(cybersecurit...

still has no mention of AI, but that will likely change as they increasingly dominate competition.

vasco•59m ago
My first ever was Stripe CTF in 2012 I think, I still wear the shirt I got (now super fainted) from passing some challenges. I was a student in portugal and remember receiving the shirt for it and thinking, maybe those Americans aren't any better than me and I can compete at the same level.

I never got super into security but it gave me the confidence to play in the same field and lose the stupid aura I had that somehow "rich americans" would be better than me at everything because they had better universities or because of Hollywood or something.

Sad that another cool thing is lost to AI but I guess kids will learn in other ways.

chvid•59m ago
What is CTF? And why is the cyber security world filled with silly gaming references?
throwa356262•52m ago
https://en.wikipedia.org/wiki/Capture_the_flag_(cybersecurit...

Its a war game reference I guess?

mort96•48m ago
Capture The Flag is a cybersecurity game where the organizers set up a bunch of intentionally vulnerable computer systems with a "flag" on them, a string that's "supposed to be" secret but is accessible through exploiting the vulnerabilities. This may be a line in /etc/password, a string in memory, a field in a database, whatever. The goal of the game is to hack into the computer systems, find ("capture") the flag, then copy/paste it into the organiser's scoreboard website to prove that you solved that particular challenge.

It's pretty fun. Or at least it was, back when you had some sense that your competitors were competing on an even playing field and just beat you because they were better than you.

I wouldn't say the name is a "gaming reference", it's just a descriptive name for a game.

monarx•58m ago
used to see some really good CTF videos show up on youtube and now nothing like that shows up on the feed
susam•56m ago
I have normally found any sort of timed technical competition intimidating. Even so, about 6 or 7 years ago, after being persuaded by a colleague, I participated in a few CTFs. I am glad I did, back when this type of thing still meant something. I have kept a screenshot from one of the CTFs that I am quite fond of: https://susam.net/files/blog/ctf-2019.png
eecc•47m ago
“solve”, why not solution? Like “spend” and not expenditure, why use the verb as a noun and not care about grammar?
iainmerrick•41m ago
They’re shorter.

Why so pedantic?

sheept•12m ago
These examples that you're calling "verbs as a noun" are standard grammar. You can't just invent simplified rules about a language and declare it wrong when the rules fall apart.
kevinsimper•44m ago
You could make it offline and with provided laptops only, just like with the competitive CS2 scene.
hsbauauvhabzb•29m ago
Ctfs need preparation and unconstrained internet, even if you block domains it’s possible to tunnel out
belabartok39•20m ago
Use jumpbox to access CTF. Disable all wireless for the playing hall.
sheept•17m ago
Presumably if you block domains, you wouldn't be able to use AI to find a way around the block. So doing so demonstrates at least some human skill
eastbound•28m ago
Since real-life situations involve AI, banning AI would make CTFs just a simple game, not a demonstration of capabilities and talent.
loeg•24m ago
They always were just a game?
mort96•23m ago
What do you mean? Solving a CTF challenge demonstrates way more capabilities and talent than just asking a chat bot to solve a CTF challenge.
sheept•19m ago
Offline CTFs could also incorporate physical security challenges, like lockpicking
rurban•43m ago
I don't do CTF's but took part at the security workshop for fun ~2 years with my Android phone only. I was first with the first simple challenge, but then couldnt continue because my phone was just too limited. But I watched what the others did. And a young Indian guy did everything with ChatGPT then. I found it silly, but amusing, because he actually got second. There was no Codex nor Claude then. Nowadays it must be dead for real, because I would solve everything with my agents, as I do in the real world.
Grimburger•43m ago
Very impressed that OP has gone from starting university in 2021 to becoming a Senior Security Engineer.

It's an incredibly exciting time in security research in my humble old man opinion.

Think the cadence of new exploits is perhaps a good measure of that rather than subjective thoughts by anyone regardless of experience.

himata4113•43m ago
I was writing an obfuscator recently, I just had the model deobfuscate and optimize the code back to original and I kept improving the obfuscator until it couldn't. The funny thing is that after all this I also ended up with a really strong deobfuscator and optimizer which is probably more capable than most commercial tools.

The solution is just to make CTFs harder, but when do CTFs become too hard? Maybe the problem is that 'hard' CTFs are fundementally too 'simple' where it's just a logic chain and an exhaustive bruteforce towards a solution since there really are limited ways to express a solution in plain sight.

Or maybe human creativity has been exhausted and we're not so limitless as we thought. Only time will tell.

I had another idea spring to mind: we could hide two flags, one that could only be found by ai agents and not humans or tools written by humans.

koolala•26m ago
A portion could require astral projection and computers can't do that. Or maybe just a VR mini-game like the 90s always imagined.
himata4113•16m ago
bringing CTF solutions into the real world is a really good idea! I didn't even think of this until you mentioned it.

we have very powerful simulation tools so something like "project a pattern at these angles" wouldn't really work as you could simulate that.

I guess something cool is that we can make simulating the solution very expensive, but in real world it would be free since it's analog... As long as simulations take longer than it takes for a human to find a solution it would be a pretty good way to deal with it. I am sure people smarter than me can come up with something.

Maybe I was too early to dismiss human creativity.

amingilani•43m ago
I don’t think CTFs are dead, they’ll just evolve. The difficulty level will need to be increased or the rules locked down. Just like sports and racing persist despite the existence of performance enhancing drugs and rocket technology.

I just did a CTF where I was in the top 10. It was the first CTF I completed and I used AI because the rules permitted it. That said, I couldn’t solve all challenges.

But yes, it was significantly easier now than I last attempted one. Even manually solving with AI assisted assembly interpretation was much easier.

mort96•37m ago
Increasing the difficulty level is a terrible solution. The problem with CTFs isn't that they're too easy. Making them harder just makes them even less accessible to people who don't cheat. It'd be like seeing people who put hidden electric motors in their bikes during Tour de France and conclude, "oh we just need longer distances and steeper hills".
raphman•41m ago
Interesting and well written article that mirrors/foreshadows how LLMs do and will change other scenes.

As I don't know much about the CTF scene, I looked for other takes on this topic.

Here's an article from 2015 about how tool-assistance already changed CTFs:

> Individual skill will undoubtedly be a factor next year. But, I'm left wondering whether next year's DEFCON CTF will tell us anything more than how well-developed each team's tools are (and how well they can interpret the results).

https://fuzyll.com/2015/ctf-is-dead-long-live-ctf/

But there are quite a few recent (2026) articles with the same core message as in the original article, e.g., https://blog.includesecurity.com/2026/04/ctfs-in-the-ai-era/ or https://k3ng.xyz/blog/ctf-is-dead

And here's someone explaining how Claude Max allowed them to win CTFs:

> I had always been interested in CTF as one of the only ways people could compete and show off their skill in coding/problem solving on a global scale. It was just too difficult and didn't make sense for me to learn the fundamentals as an electrical engineer. As time went on, I got better and better, and it was hard to tell whether it was because of experience or if it was because of improvements in AI.

> I accomplished my goals, and for that reason I'm quitting CTF, at least for now. [...] I'd like to think I highlighted the problem before it became a bigger issue. So, how do we fix this? Teams and challenge authors losing motivation is not good. CTF dying is not good. AI bad. Or is it?

https://blog.krauq.com/post/ctf-is-dying-because-of-ai

The only article that saw LLMs as a non-negative force for CTFs was this one. Fittingly, it sounds like LLM output ("Let's be honest", "This is where things get interesting.") and only contains hallucinated references.

https://caverav.cl/posts/ctfs-not-dead/ctfs-not-dead/

utopiah•29m ago
Right, the same way that car racing has "broken" jogging. This is so dumb. /s

The whole point of competitions is to provide a safe environment thanks to a set of rules all participants AGREE on in order to progress together.

If new tools "break" the competition, we change the rules and that's A-OK.

CTF isn't a natural phenomenon, if tools change, rules change, simple.

rqd3•9m ago
tldr; adapters took my elo
dreambuffer•8m ago
If AI can find all the easy bugs with ease, why do we even need to teach people those bugs anymore? If they understand the theory they can then immediately move onto more complicated bugs like multi-context bugs, long-context bugs, physics-based bugs like rowhammer, or even prompt injection bugs.
r4indeer•8m ago
I'm conflicted on the use of AI in CTFs. On the one hand, they are supposed to mirror real-life scenarios, so of course you should be able to use any tool that would be available to you in real life.

On the other hand, CTFs are fundamentally a game and a competition which are supposed to be fun and compare and improve ones skill. So when I let an LLM generate the entire solution for me, what's the point anymore? I did not learn anything. I did not work for that place on the leaderboard, I just copied the solution. And worst of all, I did not have any fun. It's boring.

So how does using AI as a solver not feel like cheating?

Frontier AI has broken the open CTF format

https://kabir.au/blog/the-ctf-scene-is-dead
71•frays•1h ago•43 comments

Project Gutenberg – keeps getting better

https://www.gutenberg.org/
910•JSeiko•16h ago•192 comments

SQL patterns I use to catch transaction fraud

https://analytics.fixelsmith.com/posts/sql-fraud-patterns/
179•redbell•9h ago•53 comments

Ploopy Bean: a trackpoint for every computer

https://ploopy.co/shop/bean-pointing-stick/
89•jibcage•3d ago•39 comments

I believe there are entire companies right now under AI psychosis

https://twitter.com/mitchellh/status/2055380239711457578
1285•reasonableklout•12h ago•630 comments

The bird eye was pushed to an evolutionary extreme

https://www.quantamagazine.org/how-the-bird-eye-was-pushed-to-an-evolutionary-extreme-20260513/
97•sohkamyung•2d ago•32 comments

Gaining control of every projector and camera on campus

https://www.edna.land/blogs/posts/scanning/
16•ednaordinary•2d ago•1 comments

Additive Blending on the Nintendo 64

https://phoboslab.org/log/2026/05/n64-additive-blending
99•ibobev•18h ago•8 comments

England Runestones

https://en.wikipedia.org/wiki/England_runestones
39•cl3misch•3d ago•10 comments

The main thing about P2P meth is that there's so much of it (2021)

https://dynomight.net/p2p-meth/
111•tomjakubowski•9h ago•121 comments

Naturally Occurring Quasicrystals

https://johncarlosbaez.wordpress.com/2026/05/14/naturally-occurring-quasicrystals/
92•lukeplato•1d ago•9 comments

A 0-click exploit chain for the Pixel 10

https://projectzero.google/2026/05/pixel-10-exploit.html
371•happyhardcore•19h ago•187 comments

Research on mildew contamination affecting the sound quality of analog tapes

https://www.nature.com/articles/s40494-026-02592-7
18•crousto•1d ago•1 comments

How to Write to SSDs [pdf]

https://www.vldb.org/pvldb/vol19/p1469-lee.pdf
101•matt_d•10h ago•12 comments

The sigmoids won't save you

https://www.astralcodexten.com/p/the-sigmoids-wont-save-you
197•Tomte•21h ago•198 comments

Orthrus-Qwen3: up to 7.8×tokens/forward on Qwen3, identical output distribution

https://github.com/chiennv2000/orthrus
79•FranckDernoncou•10h ago•9 comments

I Bought a “Junk” PSP From Japan

https://gardinerbryant.com/i-bought-a-junk-psp-from-japan-heres-how-it-went/
50•Kate0CoolLibby•3d ago•20 comments

California bill would require patches or refunds when online games shut down

https://arstechnica.com/gaming/2026/05/bill-to-keep-online-games-playable-clears-key-hurdle-in-ca...
474•Lihh27•12h ago•297 comments

EMiX: Emulating Beyond Single-FPGA Limits

https://arxiv.org/abs/2604.27012
6•PaulHoule•2d ago•1 comments

Show HN: Epiq – Distributed Git based issue tracker TUI

https://ljtn.github.io/epiq/
53•jolaflow•8h ago•17 comments

ESP-EEG is an affordable 8-channel biosensing board

https://www.autodidacts.io/cerelog-esp-eeg-affordable-openbci-like-board/
47•surprisetalk•2d ago•14 comments

I designed a nibble-oriented CPU in Verilog to build a scientific calculator

https://github.com/gdevic/FPGA-Calculator
100•gdevic•15h ago•33 comments

Image-blaster: Creates 3D environments, SFX, and meshes from a single image

https://github.com/neilsonnn/image-blaster
157•MattRogish•17h ago•31 comments

Erlang/OTP 29.0

https://www.erlang.org/news/188
192•pyinstallwoes•9h ago•35 comments

The Zulip Foundation

https://blog.zulip.com/2026/05/15/announcing-zulip-foundation/
265•boramalper•14h ago•69 comments

Show HN: Watch a neural net learn to play Snake

https://ppo.gradexp.xyz/
152•c1b•1d ago•36 comments

ASCII by Jason Scott

https://ascii.textfiles.com/
188•bookofjoe•18h ago•22 comments

Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

https://github.com/oven-sh/bun/issues/30719
391•ndiddy•15h ago•276 comments

U.S. DOJ demands Apple and Google unmask over 100k users of car-tinkering app

https://macdailynews.com/2026/05/15/u-s-doj-demands-apple-and-google-unmask-over-100000-users-of-...
417•tencentshill•15h ago•286 comments

Radicle: Sovereign {code forge} built on Git

https://radicle.dev/
236•KolmogorovComp•20h ago•85 comments