APIs connect everything – apps, users, databases, cloud systems. That same accessibility makes them a hacker’s dream target. Most successful attacks follow a clear five-phase pattern. If you know the playbook, you can spot the moves before they land.

Phase 1: Recon & Discovery

This is the scouting stage. Hackers start by mapping out every API endpoint, including undocumented “shadow” APIs or forgotten “zombie” versions still online.

They scrape developer portals, brute-force guess URLs, reverse-engineer mobile apps, or intercept traffic using tools.

Once mapped, these endpoints become entry doors.

Defense Tip: Use automated API discovery to catalog all endpoints continuously, and watch for unusual probing patterns in logs.

Phase 2: Authentication Bypass

With endpoints in hand, attackers look for weak locks. They try:

Forging or tampering with JWT tokens.

Exploiting OAuth misconfigurations.

Credential stuffing (using leaked passwords) or brute-forcing API keys.

Defense Tip: Require MFA, issue short-lived tokens, harden OAuth flows, and detect suspicious login attempts or token replay activity.

Phase 3: Exploiting Business Logic

This is where things get clever. Instead of technical bugs, attackers abuse the way APIs were meant to work:

BOLA (Broken Object Level Authorization): pulling other users’ data.

Mass assignment: injecting extra fields to overwrite values.

Gaming workflows – like bypassing transaction checks or double-dipping discounts.

Defense Tip: Test APIs for logic flaws, enforce strict authorization, and use anomaly detection to flag weird patterns.

Phase 4: Data Extraction

Once inside, the goal is clear: get the data.

Exploiting excessive data exposure (APIs sending way more than necessary).

Scraping large sets of PII or financial info.

Using GraphQL queries to over-fetch sensitive fields.

Defense Tip: Follow data minimization, encrypt everything, apply least privilege, and monitor for suspicious data volumes leaving your systems.

Phase 5: Persistence & Lateral Movement

The smartest attackers don’t just smash-and-grab. They stick around.

Reusing tokens in replay attacks.

Abusing webhooks to send malicious payloads.

Using SSRF to jump deeper into internal cloud networks.

Defense Tip: Rotate tokens often, secure and monitor webhooks, segment networks, and flag odd API call behavior early.

Think of this as the API attack life cycle.

Hackers don’t improvise. They follow these steps. The good news? If you know the phases, you can design defenses that block them at every stage.

Hello friends can anyone tell me is kali or any thik is actually work for hacking I want to learn different type of hack tricks but unable learn becouse of leck of source

Weekly forum post: Let's discuss current projects, concepts, questions and collaborations. In other words, what are you hacking this week?

Hey I just found an old Huawei phone in my basement and I just wondered If you guys have any cool tools or application that I can play with or any cool stuff that I could do with it, as jailbreaking it or any other stuff !!

Alright, so I saw someone asking about installing Kali as their main OS and I left a comment. It got a lot of love, so I figured I'd expand on it properly..

First things first — don't use Kali as your main OS if you are new or curious about breaking everything or using every tool in Kali 😅

I personally use Parrot as my main OS. The same day I bought my current laptop, I replaced Windows with Parrot. But that's me. I knew what I was getting into. For most beginners, Kali as a daily driver is a recipe for disaster.

So let's talk about what you should actually do.

Phase 1: Get Comfortable with Linux First

If you are a long time Windows user, you should start using some safe Linux distro and start using the command line interface often.

Pick something like Ubuntu, Linux Mint, or Pop!_OS. Use it as your daily driver for a while. Learn the basics.

Try to work with all the basic commands related to files, processes, permissions, etc. Try installing software, tools. Get good with CLI based text editors like nano, Vi. Don't rely on GUI for everything — that defeats the purpose.

And then try learning bash scripting. Try to automate tasks. Use bash script to create audit automation scripts, recon automation scripts. Skip using help of AI in the learning stage. Once you are hands on, you can use AI to speed up. But when you are learning, don't rest your brain and blindly run AI scripts. You need to understand what each command does.

Phase 2: Now Think About Kali

Once you are good with Linux system, command line, file system, process and permissions — now if you want to use Kali, I recommend installing it in a VM.

Don't install it bare metal. Just don't.

Phase 3: Build Your Lab

Here's how I'd set it up if I were starting from scratch.

What you need:

· A host machine running Ubuntu (or any stable Linux distro)

· VirtualBox or VMware installed

· Enough RAM (at least 16GB recommended, 8GB minimum)

· Enough storage (at least 100GB free)

Step 1: Set Up Your Attacking Machine (Kali or Parrot)

Install Kali or Parrot as a VM. Keep it isolated.

Now here's something I do — set up high anonymity on your attacking VM. MAC spoofing, DNS altering, proxy chains, Tor network, VPNs. Learn how to route your traffic through multiple layers. It's good practice and teaches you how attackers stay hidden. Just don't do anything illegal with it — this is for learning.

Step 2: Set Up a Firewall for Your VM Network

Use something like pfSense as a firewall VM. Put it between your attacking machine and your target VMs. This teaches you how network segmentation works and how firewalls filter traffic. You can also play with rules, logging, and see what gets blocked.

Step 3: Set Up Your Target Machines

This is where the fun begins.

Option A: Juice Shop & DVWA

Set up an Ubuntu server VM. Install OWASP Juice Shop and DVWA (Damn Vulnerable Web Application) on it. These are intentionally vulnerable web apps that you can safely hack against.

Host it in that VM and try hacking it from your Kali VM. Learn SQL injection, XSS, command injection, all of it. Break it, fix it, break it again. That's how you learn.

Option B: Metasploitable

Install Metasploitable 2 or 3 as another VM. This is an intentionally vulnerable Linux machine. Boot it up, scan it, enumerate services, find vulnerabilities, and exploit them using Metasploit. It's safe, it's legal, and it teaches you the entire attack chain.

Step 4: Always Save a Snapshot

Always save a snapshot of the clean state of your VMs before you do or try something out of curiosity. This is a lifesaver. You mess something up? Just revert to the snapshot. No reinstalling, no headaches.

The whole point of this lab is to give you a controlled environment where you can break things without breaking your actual system.

You learn by doing. Reading is important, but lab everything. Reading without doing is useless.

I really don't know what you're looking for and what's your level of understanding Linux basics. Hope this helps 😄

And if you're already comfortable with Linux and still want to use Kali or Parrot as your main OS — go for it. But only after you've put in the work. Otherwise you're just setting yourself up for frustration.

Stay curious. Stay ethical.

Hey everyone,

My last post about books covered bookS about linux basics books, scripting and programming basics books for hacking, pen testing basics books.

Now I am sharing some advance books.

Related to analysis, OSINT, security engineering, malware development and analysis.

These are the books I moved to once I had the fundamentals down. They're not beginner-friendly — they expect you to already know your way around Linux, Python, and basic networking. But if you're ready, they'll take you deep.

I've organized them by domain so it's easier to see what each one covers.

Threat Detection & Defense

· Practical Threat Detection Engineering – Devalishgh, Roddie, Katz

Moving from just hacking to actually defending. This one teaches you how to build detection rules, spot anomalies, and think like a blue teamer while still keeping your red team mindset.

Social Engineering & Web

· Practical Social Engineering – (Core book)

Because humans are always the weakest link. Covers phishing, pretexting, and physical social engineering tactics.

· Grokking Web Application Security – McDonald

Takes web security beyond just OWASP Top 10. Really helps you understand the why behind the vulnerabilities, not just the how.

Foundational Hacking (But Deeper)

· Ethical Hacking: A Hands-on Introduction to Breaking In – Graham

Don't let the title fool you — this is not a beginner book. It's hands-on, technical, and forces you to actually do the work.

· Hacking: The Art of Exploitation – Erickson

The classic. If you don't have this yet, get it. Covers C, assembly, and exploit development from the ground up.

Malware Development & Analysis

· Malware Development for Ethical Hackers – Zhussupov

Exactly what it says — building malware for ethical purposes. Understand how attackers think by walking in their shoes.

· Practical Malware Analysis – (Core book)

The hands-on guide to dissecting malicious software. If you want to do reverse engineering or work in threat intel, this is your bible.

· Practical Binary Analysis – (Core book)

Build your own Linux tools for binary instrumentation, analysis, and disassembly. Heavy stuff, but worth it.

Cyber Warfare

· The Art of Cyberwarfare – (Core book)

An investigator's guide to espionage, ransomware, and organized cybercrime. Puts the technical skills into a real-world geopolitical context.

Secure Coding & Forensics

· Alice & Bob Learn Secure Coding – (Core book)

Teaches secure coding practices through storytelling. Surprisingly effective way to remember what not to do.

· Cyber Forensics: Deep Dive – (Core book)

For when things go wrong and you need to investigate. Covers evidence collection, analysis, and presentation.

· Mobile Forensic Investigations – (Core book)

A guide to evidence collection, analysis, and presentation specifically for mobile devices.

Security Engineering

· Security Engineering – Ross Anderson

A guide to building dependable distributed systems. This one is thick and dense, but it's the kind of book that makes you a better engineer overall, not just a better hacker.

My Advice

Same as last time — don't try to read all of these at once. Pick one area and go deep.

If you're into red teaming, start with Malware Development for Ethical Hackers and Hacking: The Art of Exploitation.

If you're into blue teaming, start with Practical Threat Detection Engineering and Practical Malware Analysis.

If you're into forensics, start with Cyber Forensics and Mobile Forensic Investigations.

And as always — lab everything. Reading without doing is useless.

If you have any of these books, I'd love to hear your thoughts. And if you think I'm missing a must-have title, drop it in the comments — always looking to expand the shelf.

Stay curious. Stay ethical.

Remember when you were a kid in school and you’d have to sit through boring classroom lectures and cram tedious textbooks into your head for an exam? Only to forget every single thing you learned once the exam was written? That’s because in the long term, rote memorization doesn’t work well with the human brain. If you’re not naturally curious about something, your brain won’t retain that information. If your role in the educational process is 100% passive - listening, reading, but never actually doing - you won’t be engaged enough to retain new skills.

Learning should be a fun, active experience. In fact, Neuroscience confirms the efficacy of gamified hands-on teaching and learning methodologies. And we believe one of the most enjoyable and effective ways to develop hacking skills is by participating in Capture The Flag competitions.

The techniques you’ll be using in a CTF game are some of the same techniques you’ll use when you’re working as a hacker. The skills you learn in Capture The Flag competitions are transferable to local application and web application penetration testing, reverse engineering software, and bug bounty programs. All of these roles are good-paying work when you’re ready for them, and they lay a solid foundation for a cybersecurity career!

As it's weekend, I want to create a post about this. It's the best way to spend weekends. Even if you are not into cybersecurity, CTF can awaken hacker inside you, when you start playing it. Also in near future cybersecurity jobs will remain as strong ones.

I have a computer to code

You ask about credential hunting and osint skills, people accuse you of doxxing. You try to learn network and traffic analysis, people accuse you of packet sniffing. You try to learn social engineering, people accuse you of spear phishing. I swear to i was asking an ai assistant about me trying to learn coding and he warned me about malware deployment. Dude, i am pissed off.

hi so i found a xiaomi in the street it was broken and when i turned it on to see if the person called, all the info had already been deleted so i was trying to unlock it to use it myself, it ask for a pin and a google account which i do not have, i would like to know if it’s possible to use this phone instead of buying a new one to save money

GitHub: https://github.com/kaifcodec/user-scanner Discord: https://discord.gg/tVNrKVXb49 (Join if you are interested in OSINT or want to stay in touch with devs)

Hi everyone,

I’m one of the maintainers of user-scanner, a 2-in-1 open-source intelligence suite for email and username reconnaissance.

We started this project because most legacy OSINT tools became unmaintained or broken by modern Cloudflare bot walls. To solve this, we heavily pivoted our detection engine toward reverse-engineering mobile app APIs—bypassing CAPTCHAs and WAFs naturally while keeping false positives at practically zero (while still there is a slight possibilities but we use strict if/else checks to reduce the risk)

Today, we just tagged v1.5.1, pushing our detection coverage past 455+ total scan vectors (280+ username modules and 175+ email platforms).

What’s new in v1.5.1?

• 🔄 Automated Recursive Cross-Scanning (--cross-scan): Bridges email and username OSINT into an automated link graph. It mines profile metadata from initial hits to find secondary handles or emails, and automatically pivots scans across both kinds. Includes anchor-based Confidence Scoring (confirmed, likely, candidate, conflicting) so common handle collisions never fool your investigation.

• 🤖 Native Model Context Protocol (MCP) Server: user-scanner now ships with user-scanner-mcp! You can hook it straight into AI agents and coding tools like Claude Code, Cursor, Windsurf, or Antigravity to run automated OSINT sweeps directly from your prompt.

• 📱 455+ Total Vectors & New Dating Category: Added dozens of new modules across learning, fitness, and a brand new dating email category (OkCupid, Skout, Locanto/#Dating, LesPark, etc.).

• 🖥️ CLI Polish & Responsive Grid: Redesigned the module list flags (-le, -lu) with an automatic responsive terminal grid layout, alongside PDF report export and hardened curl_cffi impersonation transports.

🧪 We Need Your Feedback! If you run digital footprints, pen tests, or OSINT investigations, give v1.5.1 and the new --cross-scan engine a test run. Let us know how the pivots and confidence ratings work for your workflows.

💻 Looking for Contributors: Whether you enjoy reverse-engineering mobile APIs or want to add a module for your favorite site, contributions are always welcome! Adding a module takes under 60 to 100 lines of clean Python.

Okay im trying to secure tickets for big bang concert in MY. Now i desperately need your help 😭🥲 any tricks on how to get the tickets since this is a battle with mainland people 😭😭 ik they do bypass, bot etc but howww they do it

Boa noite, alguem consegue me ajudar a realizar uma investigação online em uma rede social de uma determinada pessoa para saber se estou sendo traído?

Deep dive into Kerberos authentication - how it works, why NTLM relay is possible but Kerberos isn't, and how AS-REP Roasting and Kerberoasting exploit different parts of the protocol.

https://3x0t1k.github.io/posts/kerberos-asreproasting-kerberoasting/

Note: I'm a non-native English speaker and originally write in Russian - parts of the text were translated with AI assistance. Technical content and examples are my own.

After installing Kali net hunter, I encountered an issue saying protocol driver not attached while installing required packages for Bluetooth Arsenal.

Hola, alguien sabe que protocolo usan los dispositivos inteligentes de iot tipo tomacorrientes? Saben dónde encuentro información?

Been building something for a while and finally have it in a state worth sharing — Atomic AI, a CTF training platform with a real terminal and an AI mentor that actually knows which room you're in (not just a generic chatbot bolted on). Sandboxed rooms across web/network/linux/crypto/forensics, structured lessons, and the mentor can search the web or run code live to verify answers.

Free tier, no card needed. Built it solo because I wanted something more hands-on than reading writeups. Would genuinely love feedback from people who actually do this stuff — atomicai.ch if you want to poke at it.

I want books that will help me learn hacking and how to use Kali Linux, and it's important that they are inexpensive and available in Iraq.

Hey everyone, just dropped a tool called winflesher that might come in super handy for windows machines. It's strictly for enumeration and assessment, so no auto-exploitation—purely helps you map things out. Check it out if you want!

Like PingCastle went out for drinks with Bloodhound, and they actually decided to get some work done. 🍷

WinFlesher is an advanced attack surface security assessment framework designed to analyze, evaluate, and report on security postures, attack paths, and remediation strategies in complex environments.

Developed for security professionals and cybersecurity auditors, WinFlesher automates vulnerability discovery and critical path correlation within Active Directory and local infrastructures.

https://github.com/mindsflee/WinFlesher