Part 1: How to Become a Pentester in 2025: Free & Affordable Online Labs ⌘ Read more
Logic Flaw: Using Invitation Function to Block Other Accounts ⌘ Read more
Bug Chain: pre-auth takeover to permanent access. ⌘ Read more
How I was able to delete a production backend server in my first finding. ⌘ Read more
Business logic: I can order anything from your account without paying for it ⌘ Read more
OSINT Writeups — MIST Cyber Drill 2025 ⌘ Read more
** How Hackers Bypass Login Pages with SQL, Logic Flaws, and Headers **
Welcome to the underworld of cybersecurity! 🌐 In this blog, we dive deep into how hackers bypass login pages — the digital gatekeepers of…
[Continue rea … ⌘ Read more
SameSite? SameMess: How I Bypassed Cookie Protections to Hijack Sessions ️♂️
Hey there!😁
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/samesi … ⌘ Read more
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that site of mine i mentioned earlier? well it's now statically generated with astro, AND it automatically builds and deploys after i push changes to my own git instance, with the power of sourcehut builds! this is so cool
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@kat@yarn.girlonthemoon.xyz i’m so obsessed like now i actually wanna play with the site more https://bytes.4-walls.net/kat/eunoia-astro
Master CRLF Injection: The Underrated Bug with Dangerous Potential
Learn how attackers exploit CRLF Injection to manipulate HTTP responses, hijack headers and unlock hidden vulnerabilities in modern web…
[Continue rea … ⌘ Read more
My cow is 2.3kg at 4 years old. ⌘ Read more
Security updates for Monday
Security updates have been issued by Debian (libbson-xs-perl, postgresql-13, redis, and simplesamlphp), Fedora (chromium, deluge, epiphany, golang-github-nats-io-nkeys, libxmp, nodejs22, perl-Compress-Raw-Lzma, php-adodb, python-h11, and xz), Gentoo (firefox, NVIDIA Drivers, Orc, PAM, and thunderbird), Mageia (libreoffice, python-django, and transfig), Red Hat (emacs, firefox, python39:3.9, and thunderbird), SUSE (bird3, freetype2, ldap-proxy, libmosquitto1, and ruby3.4-rubygem-rack … ⌘ Read more
Apple Releases iOS 18.5 With New Wallpaper, Screen Time Changes, Carrier Satellite Support for iPhone 13 and More
Apple today released iOS 18.5 and iPadOS 18.5, the fifth updates to the iOS 18 and iPadOS 18 operating systems that came out last September. iOS 18.5 and iPadOS 18.5 come a little over a month after Apple released iOS 18.4 and iPadOS 18.4. … ⌘ Read more
谷歌 Agent2Agent 協議原理解讀
谷歌在 25 年 4 月初發布了 A2A 協議，作爲 MCP 協議的補充。Agent2Agent 協議致力於促進獨立 agent 間的通信，幫助不同生態系統的 agent 溝通和協作。核心概念Agent Card：一個公共元數據文件（通常位於 /.well-known/agent.json），用於描述 Agent 的能力、技能、端點 URL 以及認證要求。客戶端通過它來發現 Agent。 Agen ⌘ Read more
Compress-a-thon — CSP Bypass via Redirection — Pentathon 2025
Compress-a-thon is a “web exploitation” challenge that was featured in Pentathon 2025 Finale Jeopardy CTF Round. This challenge involved…
[Continue reading on InfoSec Write-ups »](https://inf … ⌘ Read more
SSRF via PDF Generator? Yes, and It Led to EC2 Metadata Access
👨💻Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/ssrf-via-pdf-generator-yes-and-it-led-to-ec2-metadata-access-39b8e5b41840 … ⌘ Read more
Shadow Credentials in Active Directory: When the Exploit Doesn’t Work — Until It Does ⌘ Read more
**The Hidden Language: Exploiting GraphQL for Unauthorized Data Dump **
Free Link🎈
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/the-hidden-language-exploiting-graphql-for-unauthorized-data-dump-8 … ⌘ Read more
Bug Hunting in JS Files: Tricks, Tools, and Real-World POCs
✅Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/bug-hunting-in-js-files-tricks-tools-and-real-world-pocs-b4d43dd41d8e?source=rss—-7 … ⌘ Read more
Bug Bounty Race: Exploiting Race Conditions for Infinite Discounts ⌘ Read more
**Top 5 Easiest Bugs for Beginners in Bug Bounty **
Top 5 Easiest Bugs for Beginners in Bug Bounty 🐞
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/top-5-easiest-bugs-for-beginners-in-bug-bounty-45dd81c49e03?source=rss—-7b722bfd1b8d- … ⌘ Read more
$10,000 Bounty: HackerOne Report Comments Leak via “Export as .zip”
How a new export feature unintentionally exposed private discussions in limited disclosure reports
[Continue reading on InfoSec Write-ups »](https://infose … ⌘ Read more
Understanding Stealer Logs and Their Role in Security Testing: A Focus on Asset Discovery- Part 2 ⌘ Read more
Understanding Stealer Logs and Their Role in Security Testing — Part 1 ⌘ Read more
API Key Exposure in NASA GitHub Repository Leads to Unauthorized Access to Academic Data
🔓Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteu … ⌘ Read more
Subdomain Takeover: My $450 Win & How You Can Do It Too
Free Article Link: Click for free!
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/subdomain-takeover-my-450-win-how-you-can-do-it-too-3337ca0513b6?source=rss—-7b722 … ⌘ Read more
How I Found SSTI in a Search Bar ⌘ Read more
How Backups Can Break End-to-End Encryption (E2EE) ⌘ Read more
Hidden HackerOne & Bugcrowd Programs: How to Get Private Invites
“Private programs are where the real gold lies… but no one tells you how to get there. Let me break it down for you — with secrets most…
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tar and find were written by the devil to make sysadmins even more miserable
@kat@yarn.girlonthemoon.xyz my terrible script https://bytes.4-walls.net/kat/dotfiles/src/branch/main/scripts/Scripts/tinypin-log.sh
** CSP? More Like Can’t Stop Payloads — Bypassing CSP to XSS Like a Pro**
Hey there!😁
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/csp-more-like-cant-stop-payloads-bypassing-csp-to-xss-like-a-pro-9 … ⌘ Read more
playing a bit of guitar this morning
https://freetar.4-walls.net/tab/fifty-fifty/cupid-twin-version-chords-4667768?no_redirect
https://freetar.4-walls.net/tab/chappell-roan/good-luck-babe-chords-5191149?no_redirect
Tackling Conditional Blind SQLi Like a Pro: OSWE Prep Powered by Burp Suite ⌘ Read more
Ça y est ! Nicolas, 35 ans, achète une maison !
Un article à 4 mains écrit par h16 & Citronne Enfin ! Après moults péripéties, d’incessants allers-retours pour des visites et des discussions sans fin avec sa femme autour des “points non-négociables”, Nicolas, 35 ans, marié, et père de deux enfants (de 5 et 8 ans) a enfin trouvé la maison idéale pour la petite famille. […] ⌘ Read more
UUIDs: A False Sense Of Security
Hi Hunters, would you like to learn about a broken access control vulnerability that I discovered recently for a client.
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/uuids-a-false-sense-of-security-10467497daae?source=rss—-7b7 … ⌘ Read more
$50,000 Bounty: GitHub Access Token
How a hidden token in a desktop app could have compromised one of the world’s biggest e-commerce platforms
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/50-000-bounty-github-access-token-c29cb6f00182?source=rss—-7b722bf … ⌘ Read more
️Recon Automation Like a Pro: My 5-Stage System to Catch More Bugs
✅Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/%EF%B8%8Frecon-automation-like-a-pro-my-5-sta … ⌘ Read more
Top 10 Ways Hackers Exploit Web Applications (and How to Prevent Them)
Hackers don’t wait for big websites. They look for easy mistakes. Let’s fix them before they find yours.
[Continue reading on InfoSec Write- … ⌘ Read more
Open Redirect Vulnerability: What It Is and Why It Matters ⌘ Read more
Wazuh: The Free SIEM That Fights Like a Paid One ⌘ Read more
HACK-ERA CTF — Phase 1 Walkthrough ⌘ Read more
$840 Bounty: How I Stole OAuth Tokens from Twitter
A critical OAuth misconfiguration allowed stealing tokens with just a click
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/840-bounty-how-i-stole-oauth-tokens-from-twitter-733f8 … ⌘ Read more
Plug, Boot, Vanish: How I Turned a USB Stick into a Portable Privacy Fortress ⌘ Read more
深入解讀 MCP 協議最新版本的 4 大升級【下】：批處理與增強的工具註解
本篇接着爲大家解讀 MCP 協議最新修訂版本（2025-03-26）的四個較大升級的後兩項（上篇翻閱：深入解讀 MCP 協議最新版本的 4 大升級【上】：傳輸機制與安全授權）：JSON-RPC 批處理 增強的工具註解 01JSON-RPC 批處理JSON-RPC 2.0 規範本身支持批量（Batch）模式，允許一次性發送一個包含多個請求對象的數組，服務器隨後可以返回 ⌘ Read more
Is there any way to retain vim 7.4 search setting while using vim 9.1? ⌘ Read more
Bug Hunting in JS Files: Tricks, Tools, and Real-World POCs
🗝️Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/bug-hunting-in-js-files-tricks-tools-and-real-world-pocs-70406e3eb72e?source=rss—-7 … ⌘ Read more
Building a Secure Home Network in 2025: Practical Tips ⌘ Read more
A Guide to SQL Injection Attacks: Hackers Don’t Want You to Know This!
Imagine your website as a big toy box filled with treasures — like user info, passwords, or blog posts — and you’ve got a robot helper…
[Contin … ⌘ Read more
Privilege Escalation with Docker Container ⌘ Read more
Tool Review — TraceWeb.io Extension ⌘ Read more
$100 Bounty: How a Spoofed Email Could Change Any Username on HackerOne
A simple email spoofing trick could let anyone hijack your HackerOne username and profile link
[Continue reading on InfoSec Write-ups »] … ⌘ Read more
️♂️ Unlisted but Not Unseen: How I Found the Admin Panel in a JavaScript Comment
Hey there!😁
[Continue reading on InfoSec Write-ups »](https://infosecwriteu … ⌘ Read more
Mastering Linux Part 3: A Beginner’s Guide to APT and YUM Package Management
A Beginner’s Guide to APT and YUM Package Management
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com … ⌘ Read more
Security updates for Wednesday
Security updates have been issued by Fedora (incus and nodejs20), Red Hat (freetype, kernel, kernel-rt, libsoup, libtiff, redis, redis:6, and thunderbird), SUSE (apparmor, chromium, grafana, ImageMagick, java-11-openjdk, java-17-openjdk, libsoup, libsoup2, libxslt, opensaml, rabbitmq-server, rubygem-rack-1_6, sqlite3, and thunderbird), and Ubuntu (kernel, libfcgi, libraw, libsoup2.4, linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ib … ⌘ Read more
How to setup a Monthly Free VPS for Bug Hunting
In this article, I explained how to setup and use (GitHub CodeSpaces) for bug hunting
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/how-to-setup-a-monthly-free-vps-for-bug-hunting-d4 … ⌘ Read more
Revisiting the Past, Hacking the Future
From Invalid Reports to Real Vulnerabilities: The Path to Growth in Hacking
Hackers Love Your APIs: How to Defend Against 2025’s Biggest API Threats ⌘ Read more
A Penetration Tester’s Journey
Part 4 of “Beginner to Master in Linux” — A Penetration Tester’s Journey
AI Agents Unleashed: The Rise of Autonomous Systems Transforming Industries
The emergence of AI agents signifies a transformative shift in generative AI, evolving from simple chatbots to sophisticated … ⌘ Read more
Is Your App Protected? The Branch API Vulnerability You Need to Know About
$fallback_url is a helpful feature in Branch’s deep linking system — until someone uses it to redirect your users to phishing … ⌘ Read more
A Must-Have Tool for Bug Hunters: Find Open Redirect Vulnerabilities on Linux
Automate open redirection detection, save hours of manual testing, and level up your bug bounty recon game.
[Continue … ⌘ Read more
**Query Confusion: How HTTP Parameter Pollution Made the App Spill Secrets **
Hey there!😁
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/query-confusion-how-http-parameter-pollution-made … ⌘ Read more
Securing Apache2 + PHP: Practical guide for safer web hosting
A practical security checklist to harden your Apache2 + PHP stack and protect your web applications from common vulnerabilities.
[Continue reading on InfoSec Write-ups »](https:// … ⌘ Read more
$2,900 Bounty: Public S3 Bucket Exposure in Shopify
How a Simple S3 Misconfiguration Exposed Private Images Across Shopify Stores and Earned a $2,900 Bounty
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/2-900-bounty-public-s … ⌘ Read more
Security updates for Tuesday
Security updates have been issued by Fedora (chromium and kappanhang), Red Hat (osbuild-composer and thunderbird), SUSE (chromedriver), and Ubuntu (c-ares, corosync, mysql-8.0, mysql-8.4, openjdk-17, openjdk-21, openjdk-24, openjdk-8, and openjdk-lts). ⌘ Read more
2025 Mobile App Pentesting Guide: Tools, Techniques & Real-World Examples ⌘ Read more
Beyond Alert Boxes: Exploiting DOM XSS for Full Account Takeover
Hello Hunters, as you all know, XSS is one of the most common web vulnerabilities, often underestimated but capable of causing severe…
[Continue reading on … ⌘ Read more
Hack Any Mobile Phone Remotely
Ethically — but note — this used to work great with phone under android 10
Containers vs Virtual Machines: Key Differences, Benefits, and Use Cases Explained
Discover the difference between containers and virtual machines, their benefits, and use cases to make smarter inf … ⌘ Read more
Threat Profiling 101: How to Create a Threat Profile
Learn how to create effective threat profiles to identify and prioritize relevant cyber threats for your organization.
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/th … ⌘ Read more
The Ultimate Guide to Cyber Threat Actors: Exploring Hackers, Hacktivists, and Their Tactics
How can we understand the impact of hackers and hacktivists on global cyberse … ⌘ Read more
$1000 Bounty: Account Takeover via Host Header Injection in Password Reset Flow
Free Article Link: Click for free!
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/1000-boun … ⌘ Read more
uv：統一的 Python 包管理
花下貓語：uv 項目自發布起就大受歡迎，目前 Github star 52.6 K，遠超過它的同類競品們。前不久，它的創始人在 X 上披露了一組驚人的數據：uv 曾佔據了 PyPI 超過 20% 的流量，用戶每天通過它發起約 4-5 億次下載請求！我在去年翻譯過 uv 首發時的新聞文章 [1]，根據博客後臺不完整的統計，從 Google 搜索進入的訪問量已經超過 3000，妥妥成爲了我博客的搜索訪 ⌘ Read more
(Updated) ESP32-C5-DevKitC-1 with 240MHz RISC-V Processor, Zigbee, and Thread Connectivity
The ESP32-C5-DevKitC-1 is another upcoming entry-level development board designed for IoT applications, featuring the ESP32-C5-WROOM-1 module. This board supports key wireless protocols, including Wi-Fi 6 (2.4 GHz and 5 GHz), Bluetooth LE 5, Zigbee, and Thread. The ESP32-C5-WROOM-1 module is equipped with a 32-bit RISC-V single-core processor running at 240 MHz along … ⌘ Read more
Security updates for Monday
Security updates have been issued by Debian (ansible, containerd, and vips), Fedora (chromium, java-17-openjdk, nodejs-bash-language-server, nodejs-pnpm, ntpd-rs, redis, rust-hickory-proto, thunderbird, and valkey), Mageia (apache-mod_auth_openidc, fcgi, graphicsmagick, kernel-linus, pam, poppler, and tomcat), Red Hat (firefox, libsoup, nodejs:20, redis:6, rsync, webkit2gtk3, xmlrpc-c, and yelp), and SUSE (audiofile, ffmpeg, firefox, libsoup-2_4-1, libsoup-3_0-0, libva, libxml2, and … ⌘ Read more
This is Gypsy and she has worn this for 4 days straight. The mask falls off easily and every time it has fallen off, she meows constantly until you put it back on her head. I guess, until she gets tired of it, I will have to call her Bat-Gypsy 😂 such a weird lovable cat with loads of personality. ⌘ Read more
My cat had 4 babies 🥹 ⌘ Read more
** Bypassing Regex Validations to Achieve RCE: A Wild Bug Story**
✨Free Article Link
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/bypassing-regex-validations-to-achieve-rce-a-wild-bug-story-4c523f69b9f8?sourc … ⌘ Read more
$750 Bounty: Sensitive Data Exposure
When Deep Links Go Deeply Wrong: The Zomato Insecure WebView Story
** I Slashed My Spring Boot Startup Time to 1.8**
When people complain about Spring Boot being slow, it’s not entirely wrong — but it’s often misunderstood. Out of the box, Spring Boot is…
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/i-sl … ⌘ Read more
Stored XSS Led to OAuth App Credential Theft and Info Disclosure
Hello folks,
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/stored-xss-led-to-oauth-app-credential-theft-and-info-disclosure-85545fca3948?sou … ⌘ Read more
Bug Hunting for Real: Tools, Tactics, and Truths No One Talks About
Let’s Skip the “Sign Up on HackerOne” Talk
[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/bug-hunting-for-real-tools-tactics-and-truths-no … ⌘ Read more
Equifax Breach: How a $700M Mistake Happened
When Trust Crumbled: The Human Toll of a Single Unpatched Server
Secure your Python applications: Best practices for developers
Practical security tips every Python developer should know — from dependency safety to protecting against injection attacks and securing…
[Continue reading on InfoSec Write … ⌘ Read more
** DevSecOps Phase 3: Build Stage — CI/CD Security Gate with SAST + SCA** ⌘ Read more
Modest Payouts, Major Payoff: 4 IDORs That Netted $12K ⌘ Read more
Open Home Foundation Marks Second Year with Structural Changes and Home Assistant 2025.4 Update
April 2025 marked the start of the Open Home Foundation’s second year. Since its launch at the State of the Open Home 2024 event, the Foundation has grown rapidly, gaining broad community and industry support. Last month’s 2025 event highlighted key milestones from its first year and outlined plans for continued development. Over the past […] ⌘ Read more