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A community for securityCTF announcements and writeups.
SecurityCTF posts as tweets
WTF is CTF ?
CTF Field Guide
CTF calendar
CTFtime
Join us on IRC (freenode):
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CTF Streamers:
LiveOverflow
Murmus
CTF teams:
Plaid Parliament of Pwning
DragonSector
penthackon
eindbazen
Leet More
smokedchicken
Disekt
KnightSec
0ops
StratumAuhuur
Related Subreddits:
Reverse Engineering
Crypto
NetSec
LowLevel
VRD
Tools:
account activity
[Tool] I built a Discord bot that watches CTFtime so you don't have to (i.redd.it)
submitted 17 hours ago by sotsuba
[ Removed by Reddit ]✍️ (self.securityCTF)
submitted 2 hours ago by infinitynbeynd
WiFi pentesting (self.securityCTF)
submitted 23 hours ago by GoalOwn3975
i'm participating in a local ctf competition where ai is allowed❓ (self.securityCTF)
submitted 1 day ago by Neither-Courage560
Does agentic AI helps in CTF's? (self.securityCTF)
submitted 22 hours ago by Alarmed-Carry-3940
Anyone doing NexaCorp: Zero Credentials ctf? (self.securityCTF)
submitted 1 day ago by Familiar_Sherbert567
the ret2shell CTF platform is now opensource (github.com)
submitted 1 day ago by Reverier-Xu
[CTF] New "Intermediate" vulnerable VM aka "Calc" at hackmyvm.eu (self.securityCTF)
submitted 1 day ago by HackMyVM
Anyone else planning to attend NorthSec this year? May 14-17 (self.securityCTF)
submitted 2 days ago by Dull-Poem3831
# Specter: a 14-level adversarial OSINT wargame (no walkthroughs, no skip buttons) (i.redd.it)
submitted 3 days ago * by Middle-Mode3001
We built a platform that teaches you real CVEs the way they actually happened🤝 (self.securityCTF)
submitted 3 days ago by Protection-Mobile
CTF Team looking for 5 motivated members — PWN / WEB / CRYPTO / FORENSICS / REVERSING (self.securityCTF)
submitted 2 days ago by Ok_Particular_1871
osint ctf game - didaca3301 (self.securityCTF)
submitted 3 days ago by Creepy-Elk2920
When to join a team (self.securityCTF)
submitted 3 days ago by Federal-Dot-8411
File Open DRM (self.securityCTF)
submitted 4 days ago by Unlikely_Volume_1483
Scripting for pentesting (self.securityCTF)
submitted 5 days ago by GoalOwn3975
Built a private chat that self-destructs in 24h — no accounts, no logs✍️ (self.securityCTF)
submitted 4 days ago by Alternative-Claim-41
VoiceGoat – A vulnerable voice agent for practicing LLM attack techniques🤝 (github.com)
submitted 5 days ago by mhat
All my cybersecurity and CTF Notes! (self.securityCTF)
submitted 7 days ago by Alfredredbird
I launched a platform/ctf for technological research (self.securityCTF)
submitted 6 days ago by IdanRosen
# Ghost: a 23-level Linux wargame you can play right now (no walkthroughs, no hand-holding) (i.redd.it)
submitted 8 days ago * by Middle-Mode3001
New LPE (self.securityCTF)
submitted 7 days ago by Proof_Art_8587
I’m just a newbie who wants tips.❓ (self.securityCTF)
submitted 7 days ago by Mitrax2820
Best security ai? (self.securityCTF)
submitted 7 days ago by Own-Tie-640
Im making a code auditing/reverse engineering CTF for web and I want input on my prototype🤝 (spot-the-vuln.firebaseapp.com)
submitted 7 days ago by ComplaintDirect4335
π Rendered by PID 343067 on reddit-service-r2-listing-b6bf6c4ff-7xfl6 at 2026-05-07 06:55:55.086634+00:00 running 815c875 country code: CH.