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InfoSec Write-ups
A collection of write-ups from the best hackers in the world on topics ranging from bug bounties and CTFs to vulnhub machines, hardware challenges and real life encounters. In a nutshell, we are the largest InfoSec publication on Medium. Maintained by Hackrew
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A collection of write-ups from the best hackers in the world on topics ranging from bug bounties and CTFs to vulnhub machines, hardware challenges and real life encounters. In a nutshell, we are the largest InfoSec publication on Medium. #sharingiscaring

Editors
Go to the profile of Sai Krishna Kothapalli
Sai Krishna Kothapalli
Founder/CEO Hackrew | Security Researcher | Indian | Student @ IIT Guwahati
Go to the profile of Anangsha Alammyan
Anangsha Alammyan
Indie Author | Civil Engineer (https://authoranangsha.com)
Writers
Go to the profile of Aagam shah
Aagam shah
sorting out...🐞🐞🐞
Go to the profile of Neeraj Sonaniya
Neeraj Sonaniya
Whitehat Security Researcher
Go to the profile of Sriram
Sriram
Security Researcher | Director, Co-Founder — PrimeFort Pvt. Ltd.
Go to the profile of HassanKhanYusufzai
HassanKhanYusufzai
Web Penetration Tester & Security Analyst Acknowledged by Top companies including Google,Microsoft ,Twitter, Ebay, Sony and Many others.
Go to the profile of Vipin Chaudhary
Vipin Chaudhary
Security Researcher | Bug Bounty Hunter
Go to the profile of Armaan Pathan
Armaan Pathan
Go to the profile of Muhammad Khizer Javed
Muhammad Khizer Javed
Some of My Friends Think That I’m a geeky hacker, but I don’t know anything about computers. #Penetration_tester on #HackerOne & #Bugcrowd
Go to the profile of Mohammed Ali
Mohammed Ali
Security Researcher & Web Developer
Go to the profile of Luka Sikic
Luka Sikic
OSCP, OSCE — Pwning since 99'
Go to the profile of hyde
hyde
Security Researcher, Programmer, Full Stack Developer, & Businessman.
Go to the profile of NoGe
NoGe
researcher | #mufc
Go to the profile of AppSecure, Inc.
AppSecure, Inc.
AppSecure is a cyber security company, works with businesses across the world to protect their data, reputation and brand https://appsecure.security
Go to the profile of Waleed Ahmed
Waleed Ahmed
Go to the profile of Artem Moskowsky
Artem Moskowsky
Security Researcher
Go to the profile of Elber Andre
Elber Andre
Bug Bounty Hunter, CTF player, Pentester freelance.
Go to the profile of Alyssa Herrera
Alyssa Herrera
A web application security consultant and bug bounty hunter.
Go to the profile of Minture
Minture
Student and Researcher in the area of ​​information security, #WEB #Pentester #PHP #Python #Developer Acknowledged by : Microsoft
Go to the profile of Yuval Shprinz
Yuval Shprinz
Cybersecurity hobbyist, university student, Age of Mythology pro
Go to the profile of Aneesh Dogra
Aneesh Dogra
Go to the profile of F3D.
F3D.
@f3d__ · security researcher · hacking · pentesting · beat-making · crypto
Go to the profile of vishnuraj
vishnuraj
Security engineer | OSCP | ! Note: blog post‘s are doesn’t represent my employer by any meaning and was performed during my free time. |
Go to the profile of Vishnu Prasad P G
Vishnu Prasad P G
Go to the profile of 0Katz
0Katz
Go to the profile of Sanjay Singh Jhala
Sanjay Singh Jhala
Go to the profile of res1n
res1n
Go to the profile of theMiddle
theMiddle
Security Researcher
Go to the profile of Ronald Stoner
Ronald Stoner
Security and Infrastructure Guy | Stoner Consulting LLC | PGP EF20BF3B
Go to the profile of Shivam Singh Sengar
Shivam Singh Sengar
Arr[ ] = {Blogger, Writer, Thinker, Coder, Reverser, Sketcher}; Task.perform(Arr[random.nextInt(6)]);
Go to the profile of Rahul R
Rahul R
Security NOOB :)
Go to the profile of Sangeetha Rajesh S
Sangeetha Rajesh S
In ❤ with InfoSec
Go to the profile of Adam Toscher
Adam Toscher
Adam is a offensive security engineer and red team operator with over 20 years of experience in IT
Go to the profile of M Harsha Vardhan
M Harsha Vardhan
Red team , Malware lover, exploit lover...
Go to the profile of Jake Reynolds
Jake Reynolds
https://jakereynolds.co All contents of this blog are not associated with my employer.
Go to the profile of Koen Rouwhorst
Koen Rouwhorst
Security Engineer at Framer
Go to the profile of Mohammad Nurnobi
Mohammad Nurnobi
don’t be so sweet that people swallow you up, nor so bitter that they spit you out. -Luqman (ah)
Go to the profile of Florian Kunushevci
Florian Kunushevci
Go to the profile of Emad Shanab
Emad Shanab
A lawyer & A noooob & every law has it’s own bugs 🐜
Go to the profile of Mandeep Jadon
Mandeep Jadon
MusicAddict |Bathroom Singer | Meme Addict |Bug Hunter | Writer | Philosopher | Poet
Go to the profile of Xiaoyin Liu
Xiaoyin Liu
info security enthusiast https://twitter.com/general_nfs
Go to the profile of Mark Christian Deduyo
Mark Christian Deduyo
Go to the profile of Kanishka
Kanishka
Netizen
Go to the profile of Arjun C Shekar
Arjun C Shekar
A Professional Hacker, Threat Analyst, Knows about Kali Linux and other penetration testing distros, Passionate Photographer, Action Movie Lover
Go to the profile of Arbaz Hussain
Arbaz Hussain
~Kiraak-Boy~
Go to the profile of AneesKhan
AneesKhan
Twitter: @aneesethical
Go to the profile of denwilly
denwilly
Go to the profile of Yeasir Arafat
Yeasir Arafat
Entrepreneur || Synack Red Team Member.
Go to the profile of Luke Stephens (@hakluke)
Luke Stephens (@hakluke)
Pentester | Hubby | Musician
Go to the profile of Muhammad Uwais
Muhammad Uwais
Go to the profile of Cinta Infinita | Information Security
Cinta Infinita | Information Security
http://cintainfinita.com
Go to the profile of Ak1T4
Ak1T4
WhiteHat Hacker Zen Monk & Bounty Hunter
Go to the profile of Vincent Yiu
Vincent Yiu
Advanced Threat Replication. Simulating real threat actors using bleeding edge techniques.
Go to the profile of Hisham Mir
Hisham Mir
Co-Founder of SecurityWall.co
Go to the profile of Yasser Gersy
Yasser Gersy
https://twitter.com/yassergersy https://hackerone.com/exception EGY
Go to the profile of Meridian Miftari
Meridian Miftari
Go to the profile of Vulnerables
Vulnerables
Vulnerabilities | Write-ups | Publication link is below | https://medium.com/vulnerables
Go to the profile of Juan Caillava
Juan Caillava
Pentester at VerSprite
Go to the profile of Samuel
Samuel
Go to the profile of Abhishek Bundela
Abhishek Bundela
Infosec, bughunter https://twitter.com/abhibundela
Go to the profile of Max
Max
Impassioned about finding vulnerabilities in web apps. H1 http://hackerone.com/w2w. Linkedin: /in/w2w/. Telegram channel [RU only] http://t.me/vulns
Go to the profile of newp_th
newp_th
secure your computer 😊
Go to the profile of Youssef A. Mohamed
Youssef A. Mohamed
Go to the profile of Hariom Vashisth
Hariom Vashisth
Full Stack Developer || DevOps Engineer || AWS || GCP || Docker || Kubernetes • Now @airtel • Prev @exzeo @SocialCops @itc • RT's NOT Endorsements • 🇮🇳
Go to the profile of Daniel A. Bloom
Daniel A. Bloom
Daniel Bloom is a young, self taught, entrepreneur and the Founder of Bloom Cyber Defense, LLC — http://bcdefense.com — Twitter: @bcdannyboy
Go to the profile of andr01d
andr01d
Go to the profile of Mitch Moser
Mitch Moser
digital brain | analog heart
Go to the profile of ice3man
ice3man
A hacker, programmer and bug bounty hunter.
Go to the profile of Mohammed Eldeeb
Mohammed Eldeeb
Go to the profile of Konark Modi
Konark Modi
Data Security and Privacy Advocate | Tech Lead @cliqz. Email me at modi.konark@gmail.com to discuss projects or Game of Thrones
Go to the profile of In-Depth Tech
In-Depth Tech
Go to the profile of Gujjuboy10x00
Gujjuboy10x00
security analyst | Keep calm and hack the planet https://linkedin.com/in/vishalpanchani
Go to the profile of Vangelis Stykas
Vangelis Stykas
Father of two sons,ARIS fan,semi lunatic from time to time (lately most of the time).Mostly breaking IoT and generally internet connected devices.
Go to the profile of YoKo Kho
YoKo Kho
Bug Hunter | OSCP | One of 2018 BugCrowd MVP | https://twitter.com/YoKoAcc | https://bugcrowd.com/YokoKho | https://leanpub.com/bughunting101 (Bahasa) Free!
Go to the profile of Yasho
Yasho
Go to the profile of Kedrisec
Kedrisec
Go to the profile of Aditya Anand
Aditya Anand
CyberSec Professional | Hacker | Developer | Open Source Lover | Website - aditya12anand.com | Donate - paypal.me/aditya12anand
Go to the profile of Andrew Hilton
Andrew Hilton
Cyber Security Researcher
Go to the profile of Valeriy Shevchenko
Valeriy Shevchenko
I am a guy passionate about testing and security researching 👨‍💻 → t.me/valyaroller
Go to the profile of SPARTaN
SPARTaN
I hack things and other stuff.
Go to the profile of Ashish Jha
Ashish Jha
Saw the purity of computers and felt in love with them. Red teamer: https://bluefire-redteam.com | Guitarist | Programmer | Love Electronics | Back-end lover
Go to the profile of SE Adams
SE Adams
I write about everything and nothing.
Go to the profile of viscido
viscido
Go to the profile of Oneeb Malik
Oneeb Malik
Full stack developer and infosec enthusiast. Dream of owning an alpaca farm one day.
Go to the profile of Hamada
Hamada
Cyber security analyst @canavaroxum
Go to the profile of Olaf Hartong
Olaf Hartong
Photographer | InfoSec | DFIR | Threat hunter | Data Dweller | Splunk | Sysmon
Go to the profile of manisha sangwan
manisha sangwan
Go to the profile of Bharathvaj Ganesan
Bharathvaj Ganesan
Fullstack JavaScript Developer | Cybernaut | InfoSec Enthusiast | https://bharathvajganesan.me
Go to the profile of Chris House
Chris House
Angular Developer https://www.linkedin.com/in/1chrishouse/
Go to the profile of SI9INT
SI9INT
Whitehat in own definition
Go to the profile of dewank pant
dewank pant
Go to the profile of Tung Pun
Tung Pun
Go to the profile of d0nut
d0nut
Security Engineer at Dropbox and part-time bug hunter
Go to the profile of Siva Krishna Samireddi
Siva Krishna Samireddi
Studying Btech (ECE). Hack2Learn. Hunter @ h1. Tweet@le4rner Acknowledged by Google, Sony, Microsoft, Zomato, Coursera and many more.
Go to the profile of TomNomNom
TomNomNom
Explainer, talker, coder, fixer, eater, not really a sheep.
Go to the profile of Anangsha Alammyan
Anangsha Alammyan
Indie Author | Civil Engineer (https://authoranangsha.com)
Go to the profile of Muhammad Abdullah
Muhammad Abdullah
Computer Engineering Student ,Pentester ,Photographer
Go to the profile of Sahil Ahamad
Sahil Ahamad
Security Engineer II @zomato | Information Security Researcher | Bug Bounty Hunter | https://hackerone.com/ehsahil
Go to the profile of Dimaz Arno
Dimaz Arno
IT Security Enthusiast, https://ethic.ninja
Go to the profile of Wh11teW0lf
Wh11teW0lf
Go to the profile of Miguel
Miguel
Security Technician / Bug Bounty Hunter / EO8gBoaBmUMg
Go to the profile of Muhammad Abdullah
Muhammad Abdullah
Go to the profile of Mohamed Sayed
Mohamed Sayed
My name is Mohamed my nickname is Flex, I’m a Bug Hunter at HackerOne and Synack Red Team Member.
Go to the profile of Raushan Raj
Raushan Raj
Go to the profile of h3rm4ns3c
h3rm4ns3c
Go to the profile of Nathan
Nathan
https://twitter.com/NathOnSecurity
Go to the profile of Minali Arora
Minali Arora
Security Researcher, Blogger, Orator and a Technology Enthusiast
Go to the profile of John Troon
John Troon
Husband/Father | Pwn & RE | CTF Player | Coffee or Whiskey
Go to the profile of Sana Badhwar
Sana Badhwar
Founder of Blockchain Smart Panels. Fascinated by the potential of Blockchain technology. Author on Hacker Noon, Coinmonks, Art+Marketing & more.
Go to the profile of Efkan
Efkan
BB ❤ https://twitter.com/mefkansec
Go to the profile of Ratnadip Gajbhiye
Ratnadip Gajbhiye
Go to the profile of pwn4magic
pwn4magic
CTF Writeups & More
Go to the profile of Daniel Maksimovic
Daniel Maksimovic
A pentester. A bug bounty hunter. All together that wierd security guy.
Go to the profile of Adesh Kolte
Adesh Kolte
Listed in Top 100 most respected hackers in the world by Microsoft at the BlackHat conference in America 2018
Go to the profile of Mark Mo
Mark Mo
@_markmo_ on twitter
Go to the profile of KatsuragiCSL
KatsuragiCSL
A security enthusiast. @ZuuitterE
Go to the profile of Japz Divino
Japz Divino
Web Application Security Researcher || Programmer/Analyst || Bug Bounty Hunter.
Go to the profile of Prial Islam Khan
Prial Islam Khan
A teenager boy with passion of Breaking Security .
Go to the profile of Elliot Alderson
Elliot Alderson
French security researcher. Worst nightmare of Oneplus, Wiko, UIDAI, Kimbho, Donald Daters and others. Not completely schizophrenic. Not related to USANetwork.
Go to the profile of Gopal Singh
Gopal Singh
Go to the profile of Zahid Ali
Zahid Ali
Go to the profile of Daniel V
Daniel V
H3ll0, Fr1end.
Go to the profile of Luan Herrera
Luan Herrera
Go to the profile of Friendly
Friendly
I am Friendly. Your friendly mid-night exploiter.
Go to the profile of Sweetroll
Sweetroll
Hacker, Gamer, Moviegoer, Hiker, and HipHopHead. Tweets are my own.
Go to the profile of Javier Olmedo
Javier Olmedo
Security Researcher & Ethical Hacker - Author blog https://hackpuntes.com
Go to the profile of Samm0uda
Samm0uda
Go to the profile of Trevor Phillips
Trevor Phillips
Go to the profile of inc0gnito
inc0gnito
CTF 🚩 || HACKTHEBOX || VULNHUB || REVERSING
Go to the profile of Yarden Shafir
Yarden Shafir
Go to the profile of Mike Bond
Mike Bond
Cyber Security Enthusiast
Go to the profile of Nir Chako
Nir Chako
Red Teamer | Security Researcher
Go to the profile of Jonathan Leitschuh
Jonathan Leitschuh
Software Engineer at Gradle Inc. Security Researcher; Open Source Contributor
Go to the profile of Ajay Gautam
Ajay Gautam
Head of Security at NASSec
Go to the profile of N0_M3ga_Hacks
N0_M3ga_Hacks
@N0_M3ga_Hacks
Go to the profile of Rudra Pratap
Rudra Pratap
Python for the win!
Go to the profile of Jack Cable
Jack Cable
Go to the profile of Hussnain Fareed
Hussnain Fareed
Interested in Computers, Hacking, Machine Learning and Web Development 👨🏻‍💻
Go to the profile of Luke Berner
Luke Berner
Security Engineer
Go to the profile of Rohan Aggarwal
Rohan Aggarwal
A noob finding noob bugs to secure the internet from other noobs | Found vulns in Yahoo, Twitter, Matomo,etc | Love doing CTF & HTB | https://nahoragg.github.io
Go to the profile of SECARMY
SECARMY
CTF Team
Go to the profile of SheHacksPurple
SheHacksPurple
Tanya Janca’s Application Security Adventures
Go to the profile of Syscall59
Syscall59
Twitter: @syscall59 | medium.syscall59.com | syscall59@protonmail.com
Go to the profile of Reliance GCS
Reliance GCS
Go to the profile of Paulo Choupina
Paulo Choupina
Go to the profile of terjanq
terjanq
Security enthusiast that loves playing CTFs and hunting for bugs in the wild. Also likes to do some chess once in a while. twitter.com/terjanq
Go to the profile of Atmanand Nagpure
Atmanand Nagpure
Aka. proghax333 | Hacker | Software Developer | Security Researcher | Music Producer | Sound Designer Wanna explore everything!💗
Go to the profile of Osanda Malith Jayathissa
Osanda Malith Jayathissa
Security Researcher — https://osandamalith.com
Go to the profile of Marin Moulinier
Marin Moulinier
https://github.com/marin-m
Go to the profile of Shahar Albeck
Shahar Albeck
Founder, Independent Security Researcher @ FogMarks.com
Go to the profile of Nikita Stupin
Nikita Stupin
https://twitter.com/_nikitastupin
Go to the profile of Sameer Rao
Sameer Rao
Security Researcher
Go to the profile of Ayoub FATHI
Ayoub FATHI
Senior AppSec Engineer, Bug Bounty Hunter & I enjoy breaking things
Go to the profile of Kunal pandey
Kunal pandey
Security Researcher | Bug bounty Hunter and Rubix Cube Solver :p
Go to the profile of Josh Jung (정용민)
Josh Jung (정용민)
https://www.linkedin.com/in/joshjung/
Go to the profile of Renwa
Renwa
Go to the profile of Baibhav Anand
Baibhav Anand
I am a security researcher from Nepal and also the Founder and CEO of BaiTux ( A cyber security based educational start up)
Go to the profile of gayathri rachakonda
gayathri rachakonda
#infosec enthusiast, noob, traveller, foodie, bughunter😝, pentester 🙂
Go to the profile of Sean (zseano)
Sean (zseano)
UK WebApp Security Researcher. Creator of https://www.bugbountynotes.com/ — designed to help people learn and get involved with hacking.
Go to the profile of Sandh0t
Sandh0t
Sr. Security Engineer, Ethical Hacker, Bug Bounty Hunter At HackerOne, Synack Red Team, and BugCrowd. https://hackerone.com/sandh0t | Tweet @sandh0t
Go to the profile of Tal Eliyahu
Tal Eliyahu
Passion for solving problems, developing new solutions, innovation and experimentation
Go to the profile of Marcelo Sacchetin
Marcelo Sacchetin
Application Security Engineer at Grubhub
Go to the profile of Putra Adhari
Putra Adhari
IT Security Research ~ BugBounty ID Founder
Go to the profile of shub rathore
shub rathore
Go to the profile of Martin Schneider
Martin Schneider
Software architect and basketball coach from Austria currently living in Singapore
Go to the profile of Abanikanda
Abanikanda
I bring you what I like to tell others about.
Go to the profile of Nishchal Raj
Nishchal Raj
Go to the profile of Artem Smotrakov
Artem Smotrakov
I write about Java and security
Go to the profile of Josh Dando
Josh Dando
Front end engineer with an interest in technology, fitness and travel
Go to the profile of ruvlol
ruvlol
Go to the profile of Osama Avvan
Osama Avvan
Security Researcher, ❤️ To Code. Find me at: https://twitter.com/osamaavvan https://facebook.com/cyber.spidey
Go to the profile of Kyran Ergin
Kyran Ergin
Go to the profile of Valerio Brussani
Valerio Brussani
Pentester 🖊️+ Security Researcher 💻 + Hacker ☠ / Love to code ⌨ / Daily vuln hunter 😎
Go to the profile of MRunal
MRunal
Blogger && Security Researcher && digital forensic analystt
Go to the profile of sif0
sif0
Infosec enthusiast.
Go to the profile of Ashwini Singh
Ashwini Singh
Cybersecurity enthusiast
Go to the profile of Guhan Raja (குகன் ராஜா)
Guhan Raja (குகன் ராஜா)
Web Application Pentester
Go to the profile of Vishal Patil
Vishal Patil
wish to use tech to change lives, trekking, photography, electronics design and computer programming freak, freelance technology writer for magazine.
Go to the profile of Efren Diaz
Efren Diaz
Security Analyst at Open Data Security
Go to the profile of John Wu
John Wu
Go to the profile of Gaurang Bhatnagar
Gaurang Bhatnagar
Go to the profile of Ananda Dhakal
Ananda Dhakal
Passionate about cyber security
Go to the profile of Arseny Reutov
Arseny Reutov
Application Security Researcher at Positive.com
Go to the profile of frycos
frycos
Red Teamer @frycos
Go to the profile of Divyanshu Shukla
Divyanshu Shukla
Security Engineer | Threat Hunter | DevSecops | Linux Administrator
Go to the profile of James Davis
James Davis
I am a PhD candidate in CS at Virginia Tech. My Medium articles summarize my research findings in practitioner-friendly ways.
Go to the profile of Kenan
Kenan
Top 40 hacker @ hackerone all-time, 2017 “Most Valued Hacker” & Top 7 hacker @ “Hack The World”. Bug bounty hunter
Go to the profile of Sayaan Alam
Sayaan Alam
15 Y/O CyberSecurity Researcher Class | Student | Acknowledged By Google, IndiaToday, Spoyl, 20+ Companies
Go to the profile of Mohd Shibli
Mohd Shibli
Software Engineer | Security Researcher | Sensei | Sysadmin | Github http://github.com/shibli2700 | Twitter @0xred_assassin
Go to the profile of Malav Vyas
Malav Vyas
Go to the profile of Sagar V
Sagar V
Entrepreneur | Cyber Security Researcher | Blogger — www.sagarvd.me | blog.sagarvd.me | www.escr.in — Connect me at hello@sagarvd.me
Go to the profile of Omkar Bhagwat (th3_hidd3n_mist)
Omkar Bhagwat (th3_hidd3n_mist)
New bug bounty hunter, old gamer and anime fan.
Go to the profile of Swar Shah
Swar Shah
Go to the profile of Anonymous
Anonymous
Go to the profile of Harshit Maheshwari
Harshit Maheshwari
Go to the profile of Lee Chun How
Lee Chun How
cout << “Gabriel Lee ” << “Cyber Security Enthusiast” << ”Security Consultant ” << “Penetration Testing “ << endl;