9pm.dev @9pm_dev

Root in the shell | A journey starts again at 9PM! 9pm.dev Shell Joined June 2025

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Hack The Box @hackthebox_eu

a year ago

From intercepts to plugins, it’s all in the box 😌 @CaidoIO is now integrated with #Pwnbox, our full-featured, in-browser #hacking environment powered by @ParrotSec. Enjoy seamless #web testing with a lightweight, powerful proxy inside your browser. Read more: hackthebox.com/blog/caido-pwn… #HackTheBox #HTB #Cybersecurity #Pentesting #webTesting #Parrot

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cinzinga @cinzinga_

2K Followers 442 Following Pentester | Bug Hunter | OSEP, OSCP + some others

Building things, Breaking things

Day-0 to Zero-Day marathon (believe it)

my dm here is useless so chat me on my alt: @Aegis_122

𝕡𝕨𝕟𝕚𝕖 @0day_ninja

3K Followers 702 Following Building things, Breaking things Day-0 to Zero-Day marathon (believe it) my dm here is useless so chat me on my alt: @Aegis_122

CMU CSD PhD student | '24/'25 Top#0 Chrome Researcher | P2O Vancouver '24, TyphoonPWN '24/'25, DEFCON CTF 31-33, ... | PPP, KAIST GoN '18, @zer0pts

Xion @0x10n

5K Followers 130 Following CMU CSD PhD student | '24/'25 Top#0 Chrome Researcher | P2O Vancouver '24, TyphoonPWN '24/'25, DEFCON CTF 31-33, ... | PPP, KAIST GoN '18, @zer0pts

Pwn2Owner since 2020
Debugger is main vehicle to satisfy our boundless Qriousity. A non-profit hackers' club driven by passion.

Qrious Secure @qriousec

3K Followers 4 Following Pwn2Owner since 2020 Debugger is main vehicle to satisfy our boundless Qriousity. A non-profit hackers' club driven by passion.

SeTcbPrivilege @SeTcbPrivilege

176 Followers 116 Following

Diff-fusion @diff_fusion

238 Followers 35 Following ctf player @fluxfingers ...

Hardware-free embedded software fuzzing at https://t.co/h3RnGfmzPO. Working on advancing embedded systems software security.

Tobias Scharnowski @ScepticCtf

2K Followers 404 Following Hardware-free embedded software fuzzing at https://t.co/h3RnGfmzPO. Working on advancing embedded systems software security.

PetoWorks @petoworks

201 Followers 4 Following PetoWorks

Bruno @bkth_

7K Followers 82 Following Building a conglomerate @dfsec_com

Jeremy Fetiveau @__x86

4K Followers 2K Following CEO & co-founder @epsilon_sec

mj0011 @mj0011sec

13K Followers 133 Following CEO of Cyber-Kunlun & Kunlun Lab. Former CTO of Qihoo 360, Founder of team 360Vulcan.

Giuseppe Calì @_gcali

326 Followers 164 Following I like to take apart stuff to understand how it works. When I'm lucky, it even turns on afterwards. Pwn2Own Tokyo '26

SinSinology @SinSinology

13K Followers 735 Following Pwn2Own 20{22,23,24*2,25*3,26*2}, i look for 0-Days but i find N-Days & i chase oranges 🍊

Manfred Paul @_manfp

5K Followers 311 Following Security but not as in "national security". Playing CTFs with @redrocket_ctf (and @Sauercl0ud). Pwn2Own Vancouver 2020..=2024\{2023}. @[email protected]

vsh🛡️⚔️ @vshymanskyy

2K Followers 317 Following Product engineer, OSS+OSH enthusiast. He/him. Created: @blynk_app, @wasm3_engine, ViperIDE, TinyGSM

FAMASoon @FAMASoon

1K Followers 857 Following Security research blog: https://t.co/iTsZ04qDQ8 GitHub: https://t.co/nfFPKkjf5O

POC_Crew @POC_Crew

8K Followers 690 Following Organizer of Zer0Con, MOSEC and #POC2026 (https://t.co/6pIiBKhgxm)

Interests: reversing, fuzzing, browser&kernel exploits, red teaming, maldev (loaders, C2, obfuscators), coding (hashcat utils, BloodHound ingestors, EDRs), ...

Rene Freingruber @ReneFreingruber

3K Followers 604 Following Interests: reversing, fuzzing, browser&kernel exploits, red teaming, maldev (loaders, C2, obfuscators), coding (hashcat utils, BloodHound ingestors, EDRs), ...

maxpl0it @maxpl0it

10K Followers 874 Following Principal Vulnerability Researcher. Occasional Pwn2Owner

itszn @itszn13

11K Followers 734 Following Amy | Security researcher @ OpenAI | https://t.co/W1SE7NmCx8 | bsky: https://t.co/JBmOGE4YKO | LLM ART: https://t.co/7FtQ8O8nAW

$¯\_(ツ)_/¯, blogging on https://t.co/36oOc8Mgha and posting codes on https://t.co/P83Oen94Rc.$

Axel Souchet @0vercl0k

13K Followers 583 Following ¯\_(ツ)_/¯, blogging on https://t.co/36oOc8Mgha and posting codes on https://t.co/P83Oen94Rc.

research @dfsec_com - @niklasb@infosec.exchange

Niklas B @_niklasb

15K Followers 800 Following research @dfsec_com - @[email protected]

@v8js security, CTFs and CPU vulnz. LCHL.
@tsuro@infosec.exchange

stephen @_tsuro

10K Followers 526 Following @v8js security, CTFs and CPU vulnz. LCHL. @[email protected]

Cybersec Enthusiast.
IE/Chrome(v8(ctf+sbx)+gpu)/FF(ion+sbx)
Qrious Secure (@qriousec) & VnSecurity (@vnsec).
IT Defender by day/Bug finding by random.

Toan Pham @__suto

3K Followers 850 Following Cybersec Enthusiast. IE/Chrome(v8(ctf+sbx)+gpu)/FF(ion+sbx) Qrious Secure (@qriousec) & VnSecurity (@vnsec). IT Defender by day/Bug finding by random.

We make our community and cybersecurity world better. Organiser of VXCON & VXCTF; Village organiser in DEFCON/HITB; CTF player since 2010

VXCON @vxresearch

1K Followers 335 Following We make our community and cybersecurity world better. Organiser of VXCON & VXCTF; Village organiser in DEFCON/HITB; CTF player since 2010

INSU YUN @insu_yun

2K Followers 603 Following Associate Professor (Untenured) at KAIST EE #KAIST #HackingLab #GoN

TheZDIBugs @TheZDIBugs

6K Followers 2 Following Checks for high severity, 0day, or Pwn2Own related advisories published by @thezdi

Director @vxresearch | @defcon Singapore, @blackhatevents Asia & USA Review Board | Love animals, retro game & browser bug hunting

Mr. Anthony 安東尼 @darkfloyd1014

3K Followers 5K Following Director @vxresearch | @defcon Singapore, @blackhatevents Asia & USA Review Board | Love animals, retro game & browser bug hunting

Fluddsec\0 @FluddSec

626 Followers 207 Following Independent Vulnerability Researcher @ Runic Labs

Hossein Lotfi @hosselot

7K Followers 60 Following Application security specialist at ZDI (views are my own). Check #hosselot_tips for vulnerability research tips.

Alexandru Niculae @_aniculae

1K Followers 1K Following Smart Contract Eng @aave, prev @reya_xyz @cambridge_cl @google project zero

Research-oriented Cybersecurity startup specializing in #fuzzing, Vulnerability Research & Offensive security on Mobile, Browser, AI/LLM, Network & Blockchain.

FuzzingLabs @FuzzingLabs

9K Followers 4K Following Research-oriented Cybersecurity startup specializing in #fuzzing, Vulnerability Research & Offensive security on Mobile, Browser, AI/LLM, Network & Blockchain.

Founder & CEO of @FuzzingLabs | Security Researcher focused on Fuzzing & Vulnerability Research | Rust, Go, Wasm, Browser, AI, Blockchain & Web3 Security

Patrick Ventuzelo @Pat_Ventuzelo

4K Followers 1K Following Founder & CEO of @FuzzingLabs | Security Researcher focused on Fuzzing & Vulnerability Research | Rust, Go, Wasm, Browser, AI, Blockchain & Web3 Security

OffensiveCon Berlin is a technical international security conference focused on offensive security only. Organised by @Binary_Gecko. Stay tuned #OffensiveCon26.

offensivecon @offensive_con

28K Followers 1 Following OffensiveCon Berlin is a technical international security conference focused on offensive security only. Organised by @Binary_Gecko. Stay tuned #OffensiveCon26.

Lê Hữu Quang Linh ... @linhlhq

3K Followers 847 Following Security researcher, Prompt engineer

sferrini @Simone_Ferrini

5K Followers 1K Following *OS Security Researcher & Director at @prdgmshift. Passionate about RE, fuzzing, hardware and low-level binary stuff. ʚଓ

Working on Project Zero, Big Sleep, and V8 Security. Personal account. Also @saelo@chaos.social and https://t.co/aVitnPjBie

Samuel Groß @5aelo

25K Followers 524 Following Working on Project Zero, Big Sleep, and V8 Security. Personal account. Also @[email protected] and https://t.co/aVitnPjBie

Project Zero Bugs @ProjectZeroBugs

37K Followers 0 Following A bot that posts the latest blog posts and disclosures from Google's Project Zero

nedwill @NedWilliamson

16K Followers 635 Following supporting the humans in the loop; PPP for life

TyphoonCon🌪️ @typhooncon

8K Followers 4 Following TyphoonCon is an annual all Offensive Security Conference, taking place May 24-29, 2026 in Seoul, South Korea 🌪️

Software security researcher & faculty @CISPA; previously at @ASU; PhD from @ruhrunibochum @mu00d8.bsky.social @mu00d8@infosec.exchange

Moritz Schloegel @m_u00d8

888 Followers 677 Following Software security researcher & faculty @CISPA; previously at @ASU; PhD from @ruhrunibochum @mu00d8.bsky.social @[email protected]

CryptoExperts @CryptoExperts

3K Followers 45 Following Research, innovation and expertise in cryptography. Find us on https://t.co/93SHThVqBn https://t.co/vF4t2DcqxR

Marco Bonelli @mebeim

2K Followers 101 Following I like hacking

Competitive programmer && CTF player at @TheRomanXpl0it/@mhackeroni. dp1 or dp_1 on most sites.

Also on https://t.co/arbIngZIT4 and @dp_1@infosec.exchange

Dario Petrillo @dario_petrillo

523 Followers 360 Following Competitive programmer && CTF player at @TheRomanXpl0it/@mhackeroni. dp1 or dp_1 on most sites. Also on https://t.co/arbIngZIT4 and @[email protected]

rev.ng @_revng

5K Followers 4 Following Building the next generation decompiler. Binary analysis is a dish best served static.

The leading provider of crowdsourced cybersecurity solutions purpose-built to secure the digitally connected world...Unleash Ingenuity™

bugcrowd @Bugcrowd

199K Followers 6K Following The leading provider of crowdsourced cybersecurity solutions purpose-built to secure the digitally connected world...Unleash Ingenuity™

Web Security Academy @WebSecAcademy

141K Followers 36 Following Free web security training from @PortSwigger

Amber Security Lab, OPPO Mobile Telecommunications Corp. Ltd. bug hunter,chrome security,android security,0-day,exploit

cassidy6564 @cassidy6564

399 Followers 608 Following Amber Security Lab, OPPO Mobile Telecommunications Corp. Ltd. bug hunter,chrome security,android security,0-day,exploit

Lead Security Researcher @zellic_io. Top 3 Chrome VRP. Top 2 Facebook Whitehat. MSRC MVRs 9th. BlackHat Asia/USA & Zer0Con & OffensiveCon speaker.

sakura @eternalsakura13

9K Followers 206 Following Lead Security Researcher @zellic_io. Top 3 Chrome VRP. Top 2 Facebook Whitehat. MSRC MVRs 9th. BlackHat Asia/USA & Zer0Con & OffensiveCon speaker.