Blue Alder

e n j o y e r

[DownUnderCTF @DownUnderCTF]

Hey DUCTF community,

We're sorry to announce that DownUnderCTF 2026 is being postponed for this year. We know this is disappointing news, but ultimately we don't believe we can deliver the high quality CTF you love and come to expect.

See more in reply.

[DownUnderCTF @DownUnderCTF]

Did you guess right? ONE month until DownUnderCTF 2025 kicks off and by now you should know what you’ll be doing this 18-20th July!

Join us! Share your interest here! https://t.co/mRG1BaAv6v

[Wiz @wiz_io]

#IngressNightmare: Wiz Research uncovers a critical vulnerability in Ingress-NGINX 🚨

Wiz Research found a novel attack vector in one of Kubernetes's most fundamental projects, Ingress-NGINX, which is rated CVSS 9.8.

[DownUnderCTF @DownUnderCTF]

🔥 2025, we’re coming in HOT! 🔥 Block out July 18th-20th - it’s going to be an absolute explosion of fun! 🎉🚀
#CTF #DownUnderCTF

[Blue Alder @BlueAlder]

@HexF_me @DownUnderCTF solved all the challenges but still came last, smh

[Theori @theori_io]

Do you use a virtual machine to browse dangerous links safely? If you use the Chrome browser inside that virtual machine, is it secure enough?
As you might have guessed, the answer is not so much.

We chained six unique CVEs from 2023 listed below.

• Chrome Renderer RCE : CVE-2023-3079
• Chrome Sandbox Escape : CVE-2023-21674
• LPE in guest OS : CVE-2023-29360
• VMware Info Leak : CVE-2023-34044
• VMware Escape : CVE-2023-20869
• LPE in host OS : CVE-2023-36802

[DownUnderCTF @DownUnderCTF]

Wanna peek under the hood on how we ran DUCTF 2023?

Our 2023 infra writeup is now live at: https://t.co/sBdry1tf8R

[Crem @Creminer]

I have been loving the @cybearsCTF @BSidesCbr CTF Spotify 2023 playlist in my post BSidesCBR depression that I decided to combine both the 2021 + 2023 playlist and dedupe it. Enjoy - https://t.co/hu2gwUgl73

[Renwa @RenwaX23]

CTF Player vs Bug Bounty Hunter

[Blue Alder @BlueAlder]

@cybearsCTF The Legal Eagle Unicode definition of 't' is brutal 😅

[Blue Alder @BlueAlder]

Next up from #DUCTF2023 is Another Please

Here I cover the re-entrancy exploit used to solve this challenge

https://t.co/emH4Z8LGoz

[Blue Alder @BlueAlder]

I will be posting video walkthroughs for the DUCTF 2023 Blockchain challenges that I wrote.

First up is Eight Five Four Five :)

https://t.co/iia4j8N6G9

[Blue Alder @BlueAlder]

Let's gooo! DownUnderCTF 4.0 this weekend! I've written some blockchain challenges this year.

Come play my favourite ever CTF (unbiased)

[DownUnderCTF @DownUnderCTF]

Attention ALL Hackers - We are now ONE WEEK AWAY from DUCTF 4.0!

🔥 Sign-ups are now OPEN! 🔥
https://t.co/tbttlCFE6H

[DownUnderCTF @DownUnderCTF]

It's here, it's today, it's 2 weeks away!

Hold your keyboards my fellow hackers! It's fast approaching! Today marks 2 weeks before DUCTF 4.0!

Gather your mates or ride it solo, the best is yet be unveiled! ✨

Psst... Official registration is on the horizon!👀

[Blue Alder @BlueAlder]

@jarrodwatts lgtm

[Blue Alder @BlueAlder]

@jarrodwatts @codingwithmanny 💯

[LaurieWired @lauriewired]

OS internals books are wild...

[Blue Alder @BlueAlder]

@TheGrandPew Hard drive, can always use the extra disk space!

[Blue Alder @BlueAlder]

@bytes032 bruh moment

[Blue Alder @BlueAlder]

Well I guess I have an answer now

https://t.co/fl2qQsiol3

[Blue Alder @BlueAlder]

Why can't be authenticate to websites with biometrics? I wonder what that could look like.