Last Updated: 1/17/2023


Check back here often. Responses to all submitted frequently asked questions will be posted here and updated regularly. Have a question you don’t see answered here? Send it to .


Where do I sign up for the Hack-A-Sat 4 contest?  
Registration for HAS4 Qualification round will open in early 2023.  Be sure to follow us on social media (Twitter: @Hack_A_Sat) and sign up for our mailing list on hackasat.com so you don’t miss it.

What is this Moonlighter thing?
Moonlighter is the world’s first purpose-built satellite just for cybersecurity training and research. It’s literally a hacking sandbox in space, that will be launched in 2023 and host the HAS4 Finals competition.

What kind of skills are needed to be successful in the Hack-A-Sat Competitions?
Successful teams will need to have a diverse set of skills from both the cyber and space domains.  This prize competition is meant to create a two-way bridge between traditional cyber security professionals who are accustomed to categories like web, forensics, crypto, binaries, protocols, etc, and satellite designers and operators who think in terms of TLEs, quaternions, and two body problems.

Who is eligible to compete in Hack-A-Sat?
The Hack-A-Sat competition is open to all individuals, nationalities, ages, academic institutions and business entities, subject to the caveats in Section 5.1 of the Rules.

HAS3 Finals

Where can I learn more about what happened at the Hack-A-Sat 3 Final Event? 
Check out the highlights from our HAS3 Recap & Awards Show.  
All Hack-A-Sat 3 Finals challenges and source code are located here:  github.com/cromulencellc/hackasat-finals-2022
And the Hack-A-Sat 3 Finals solution writeups from our finalists are located here:  HAS3 Finalist Writeups 
You can also check out our game organizers blog post here:  Hack-A-Sat 2022 Finals: Teams on the attack — Cromulence 

Who won HAS3?  How many teams qualified for HAS3 Finals? 
PolandCanIntoSpace took home 1st place and $50K at HAS3 Finals.  SpaceBitsRUs placed 2nd ($30K) and Solarwine placed 3rd ($20K).  Eight teams total were selected for the Hack-A-Sat 3 Finals from over 800 teams competing in Quals. 

Did the Hack-A-Sat 3 Final Event use virtual or real satellites?
For Hack-A-Sat 3, we went all digital.  Teams were given a digital twin – a virtual representation of an actual satellite – for training and testing before and during the final event.  Using a digital twin allowed us to closely replicate satellite operations and orbital mechanics, a crucial educational opportunity as we move towards Hack-A-Sat 4, the world’s first CTF in space on an actual satellite.  

Hack-A-Sat 3 Qualifying Event

Where can I learn more about what happened at the Hack-A-Sat 3 Qualification Event?
Head on over to to see the final scoreboard and more. All Hack-A-Sat 3 quals challenges and solutions are available to the public in the And last but not least, check out detailed Hack-A-Sat 3 Quals Challenge writeups and even some source code from our Finalist teams here:

Can you summarize the Hack-A-Sat 3 qualification event challenge categories?

Here are the official HAS3 Qualifying Event categories, so you can ensure you’ve got the right mix of skills on your team:

  • The Danger Room: This training facility will prepare you for the challenges ahead.
  • Revenge of the space math: We heard you like space math, so get ready for orbital mechanics madness.
  • I can haz satellite: BEEP! Is this thing on? Someone let you into the satellite operations center and it’s time to send some space commands – you’re also gonna want to know how to handle telemetry.
  • We get signal: Modulate THIS! Dr. von Kerman is still working on his Space-Cat7 cables for connecting to our satellites. Until then we’re stuck with these radios.
  • The only good bug is a dead bug:  Are you doing your part? Reverse engineer, exploit, and squash these bugs!
  • Crypto Category Placeholder Name: Cryptography? What’s that? Well you better find out if you want to decode this category and earn a top spot.
  • Rocinante strikes back: Marco’s got nothing on the surprise that the Roci is bringing. 


Is there Hack-A-Sat promotional material that I can share on social media platforms?
The Hack-A-Sat team would be thrilled to have you share any content posted from our public Twitter handle (@Hack_A_Sat) or our official website hackasat.com. Be sure to #HackASat3 when you share!


Where can I learn more about what happened at the HAS2 Final Event?
Check out the highlights from our Day 2 Recap & Awards Ceremony.
All HAS2 Finals challenges and source code are located here: github.com/cromulencellc/hackasat-final-2021
And the HAS2 Finals solution writeups from our finalists are located here: hackasat-final-2021/HAS2 Finalist Technical Papers Distro A.pdf at main · cromulencellc/hackasat-final-2021



[email protected].com

Stay informed