DEV Community: Dallen Sadru

🖤 OPERATION VANTABLACK – FREE COMMUNITY CTF WALKTHROUGH

Dallen Sadru — Thu, 09 Jul 2026 06:45:30 +0000

Most people learn Digital Forensics by reading about it.

The fastest way to improve is by watching an investigation unfold and understanding the thinking behind every step.

This Saturday, we're opening our community CTF walkthrough to everyone.

🔍 OPERATION VANTABLACK – Free Community CTF Walkthrough

We'll work through a realistic digital forensics challenge from start to finish, demonstrating how investigators approach evidence, validate findings, and connect the dots.

During the session, we'll explore practical techniques such as:

🖤 Investigating suspicious files

🖤 Recovering hidden information

🖤 Cracking protected archives

🖤 Analyzing documents, images, and audio artifacts

🖤 Following the complete chain of evidence using real DFIR methodologies

Whether you're taking your first steps in cybersecurity or sharpening your investigative skills, this session is designed to give you practical experience you can immediately apply.

📅 Date: Saturday, July 11, 2026

🕒 Time: 3:30 PM – 6:00 PM (EAT)

💻 Location: Online via Google Meet

🎯 Want to attempt the challenge before the walkthrough?

CTF: https://ctf.astralguard.online/events/operation-vantablack

💬 Join our cybersecurity community:

https://discord.gg/z4VhJXcFQ

Bring your curiosity, your questions, and your investigative mindset. By the end of the session, you'll have seen how experienced analysts approach a forensic investigation not just the tools they use, but the reasoning behind every decision.

See you on Saturday.

CyberSecurity #DigitalForensics #DFIR #CTF #BlueTeam #IncidentResponse #CyberSecurityCommunity #ThreatHunting #CyberTraining #AstralGuard #LearnCyberSecurity #AstralGuardCyberAcademy

🖤 OPERATION VANTABLACK — Free Digital Forensics CTF 🖤

Dallen Sadru — Sat, 04 Jul 2026 10:27:22 +0000

Ever wondered what real cybersecurity investigation actually feels like?
AstralGuard is running a free, open Capture The Flag challenge — a hands-on forensics mystery where you investigate a "routine" file that's hiding a lot more than it looks.

What you'll actually practice:
✅ Real digital forensics techniques
✅ Investigation & analytical thinking
✅ Tools used by actual security analysts
✅ Problem-solving under a real challenge, not a tutorial

Who's it for?
Students, security beginners, hobbyists, working professionals — anyone curious enough to try. No CTF experience needed. No entry fee. No team required.

What you get:
📌 Practical, resume-worthy skills
📌 Bragging rights + leaderboard recognition
📌 A genuinely fun way to learn forensics by doing it, not reading about it

👉 Full details & registration: https://ctf.astralguard.online/events/operation-vantablack
Free. Open. Yours to solve.
See you on the leaderboard. 🕵️‍♂️

🚩 Free CTF Event This Saturday — Come Learn With Us

Dallen Sadru — Wed, 24 Jun 2026 19:20:15 +0000

If you've ever been curious about cybersecurity but didn't know where to start, this one's for you.

Astral Guard Cyber Academy is hosting a free, community-driven Capture The Flag (CTF) solving session this Saturday, and we'd love to have you join us.

🔍 Challenge: Ghost in the Pixels

📂 Category: Digital Forensics & Steganography

🎯 Difficulty: Beginner

📅 Saturday, June 27, 2026

🕞 3:30 PM – 6:30 PM

💻 Online via Google Meet

👉 Join here: https://meet.google.com/ndk-qwcj-fbk

We'll be investigating a real forensics challenge together analyzing evidence, uncovering hidden data, and learning hands-on techniques that actual analysts use. No experience needed. Just bring your curiosity.

This is the kind of session where you leave knowing more than when you came in.

We're also building something bigger.

Astral Guard has a growing cybersecurity community on Discord where analysts, learners, and enthusiasts connect, share resources, and sharpen their skills together beginners absolutely welcome.

🔗 Join the community: https://discord.gg/sp9uUefv4v

See you Saturday. 👾

Cybersecurity #CTF #DigitalForensics #InfoSec #Steganography #BeginnersWelcome #AstralGuardCyberAcademy #CyberCommunity

Join AstralGuard Discord Community

Dallen Sadru — Sun, 21 Jun 2026 23:48:46 +0000

🛡️ Are you serious about cybersecurity?
Then you need to be in this server.
AstralGuard Cyber Academy is building one of the most active cybersecurity communities online — and we want you in it.
Whether you're just starting out or already deep in the field, this is where you come to learn, grow, and connect with people who are on the same path.
Inside the Discord you'll find:

🔍 CTF challenges and forensics discussions

💻 Ethical hacking and web security channels

🧠 Study groups and peer support

📢 Early access to events, solve books and free resources

👥 A community that actually helps each other — no gatekeeping
We run live CTF events, drop free resources regularly, and the AstralGuard team is active and answering questions every day.
If you've been learning alone, that stops today.
👇 Join free. No experience required.

🔗 https://discord.gg/sp9uUefv4v

🕵️ You Are Invited — Live Digital Forensics Investigation in Progress

Dallen Sadru — Tue, 05 May 2026 07:27:51 +0000

AstralGuard Cyber Academy is about to do something we have never done before and if you miss it this Wednesday you are genuinely going to regret it.

You know how we always talk about steganography and digital forensics? How investigators find hidden data inside files that look completely normal to everyone else?

On Wednesday 6th May from 4:30PM to 8:30PM we are not talking about it anymore.

We are DOING it. Live. In front of you. 👀

There is a real evidence file. A suspicious image seized during a cybercrime investigation. To anyone who looks at it it is just a picture. Nothing suspicious. Nothing unusual. Just an image sitting there.

But something is buried inside it.
Hidden data, concealed so deep that most people would never know it was there. And we are going to find it. Live on screen. Every command.

Every tool. Every single moment where the invisible becomes visible.
No theory. No slides. No "this is how it works in practice." Just actual forensics happening in real time while you watch.

🔥 We are going to verify evidence integrity the way law enforcement does it. We are going to rip through the file and expose what it is really hiding. We are going to detect steganographic manipulation that the naked eye cannot see.

We are going to extract the hidden data live. And we are going to break down the encryption the suspect used to lock it all away.
This is the kind of session that changes how you see every image file for the rest of your life.

Now here is the thing 👇
This is NOT happening on Google Meet.
This is happening inside the AstralGuard Cyber Academy OFFSEC LAB 🧪

The OFFSEC LAB is our private hands on cybersecurity environment where real skills get built. This is where things get serious.

If you are not in there yet you are already missing out and Wednesday is going to make that even more clear.
Joining is simple. Go here right now 👇
🔗 https://academy.astralguard.online/offsec-lab
Follow the steps, get yourself in, and make sure you are there on Wednesday at 4:30PM sharp.

Two hours. One suspicious file. Zero theory. Pure forensics.

💀Wednesday 6th May 2026
4:30PM to 6:30PM EAT
AstralGuard Cyber Academy OFFSEC LAB only
Do not be late. Do not miss this. See you in the lab. 🔐

🚨 Don't start bug bounty before you do this.

Dallen Sadru — Tue, 28 Apr 2026 13:46:04 +0000

And if you already started and haven't found your first bug yet — this is exactly why.
Most people jump into bug bounty programs copying other people's methodology without actually understanding what they're looking at. They spend hours on a target, find nothing, get frustrated and quit. Not because they're not smart enough — but because nobody taught them how to read a web application.
That changes here.
We're opening 10 seats for our Practical Web Security Bootcamp. 10 days. No distractions. No theory dumping. Just you and the lab.

🎯 Who this is for:
→ You want to start bug bounty but don't know where to begin
→ You've been doing bug bounty and still haven't landed your first bug
→ You're studying cybersecurity and want skills that actually show up on the job
→ You're a developer who wants to understand how your own applications can be compromised
→ You're tired of watching tutorials and want to actually do something

💥 What happens in these 10 days:
🔬 You get unlimited access to our live lab environment for the full 10 days — practice as many times as you want, break things, learn from it, do it again
🧠 You learn to look at a web application's frontend behavior and understand exactly what is happening on the server — without touching the source code. That skill alone will change how you approach every target you ever touch
🔍 You will be able to identify the most critical web security flaws that show up across thousands of real applications — the exact vulnerabilities that bug bounty hunters get paid to find
🏁 At the end you face a capstone security assessment — a real target, your skills, no hints. You attack it, analyze it, document it like a professional
🎓 You walk away with a verifiable certificate in Practical Web Security — not a participation badge, you only get it when you pass the final assessment

⚠️ This is not a course you sit back and watch.
This is 10 days of going dark. No casual scrolling, no half-attention. You commit, you grind, and you come out the other side actually knowing what you're doing.
That's why we cap it at 10 students only. Small group. Real attention. Real results.

🗓️ Starts May 13
⏳ Registration closes May 10
👥 10 seats. That's it.
If you've been waiting for something that actually takes you seriously —
This is it. Grab your spot now
👇

https://selar.com/12og490k82

🔐 Think Two-Factor Authentication Makes You Safe? Think Again.

Dallen Sadru — Fri, 03 Apr 2026 09:02:11 +0000

For years, Two-Factor Authentication (2FA) has been promoted as a critical layer of security — and rightly so. It adds protection beyond just a password.

But here’s the uncomfortable truth:

2FA is not a guarantee of security. It is only as strong as its implementation.

In real-world applications, we continue to see systems where:
• The 2FA step can be bypassed due to flawed logic
• Authentication flows trust client-side input too much
• Weak OTP mechanisms allow brute-force attacks
• Session handling mistakes expose fully authenticated access

In these cases, attackers don’t need your password.
They don’t need your device.

They only need one thing: a mistake in the system’s design.

🎯 Why This Matters

Modern attackers are no longer focused on breaking encryption —
they are focused on exploiting logic flaws and misconfigurations.

A single oversight in how 2FA is implemented can lead to:
→ Full account takeover
→ Unauthorized access to sensitive systems
→ Severe business and reputational damage

💻 What Professionals Need to Learn

Understanding security today means going beyond theory. It requires:
• Analyzing real authentication flows
• Identifying trust boundaries in applications
• Testing for bypass techniques in controlled environments
• Thinking like an attacker to defend effectively

🚀 Take the Next Step

At AstralGuard Cyber Academy, we focus on practical, real-world cybersecurity training — not just concepts, but execution.

Our Practical Web Hacking Course is designed to help you:
• Master real exploitation techniques
• Understand vulnerabilities like 2FA bypass in depth
• Build hands-on skills used in penetration testing and bug bounty

If you’re serious about cybersecurity and want to move from theory to real skill:

👉 Enroll here:
academy.astralguard.online/courses

🧠 Security is not about adding more layers. It’s about ensuring those layers cannot be broken.

CyberSecurity #WebSecurity #EthicalHacking #BugBounty #Pentesting #InformationSecurity

🚀 LIVE SESSION TODAY – Host Header Injection Attack Chaining

Dallen Sadru — Wed, 01 Apr 2026 06:10:38 +0000

Today we’re going beyond basics.

In this session, you’ll learn how attackers use Host Header Injection to manipulate application logic and perform password reset poisoning — leading to full account takeover.

💻 What to expect:
• Live, real-world demonstration
• Step-by-step attack chaining
• Learn how reset tokens can be captured and abused

📅 Date: 1st April 2026
⏰ Time: 4:30 PM (EAT)
🏫 Platform: Classroom on BigBlueButton

This is advanced, practical knowledge — not something you find in typical tutorials.

⚠️ Strictly for enrolled students only.
If you’re not enrolled, please do not join.

🔥 Be ready. This is where things get real.

— AstralGuard Cyber Academy

📅 Don’t miss any of our hacking events:
https://academy.astralguard.online/calendar

🚨 Stop watching cybersecurity tutorials. Start thinking like a real pentester.

Dallen Sadru — Tue, 31 Mar 2026 05:28:43 +0000

Most people spend months learning “theory”…
…but freeze the moment they face a real target.

That’s the gap.

And that’s exactly what our Offensive Web Penetration Testing program fixes.

💻 This is NOT a theory course.
This is a fully practical, hands-on experience where you:

✔️ Exploit real-world web vulnerabilities
✔️ Work inside realistic lab environments
✔️ Learn how attackers actually think and operate

🎯 What makes this different?

🔹 100% Practical Training
No fluff. No wasted time. You build real, job-ready skills.

🔹 Industry-Ready Reporting Skills
Learn how to:

Write professional penetration testing reports
Create vulnerability disclosure reports
Clearly explain security issues to employers and clients

🔹 Peer Learning Environment
You won’t learn alone.
Collaborate, discuss, and grow with others on the same path.

🔹 Verifiable Certificate
Show proof of your skills — something you can actually present with confidence.

🚀 What can you do after this course?

This isn’t just “learning” — it’s positioning you for real opportunities:

💼 Web Application Penetration Tester
💼 Bug Bounty Hunter
💼 Security Analyst (Blue/Red Team)
💼 Vulnerability Assessment Specialist
💼 Cybersecurity Consultant
💼 SOC Analyst (with offensive edge)
💼 Freelance Pentester
💼 Junior Red Team Operator

🧠 Why this matters

Companies don’t hire people who watched courses.

They hire people who can:
→ Find vulnerabilities
→ Exploit them
→ Explain them clearly

That’s exactly what you’ll learn here.

🔥 If you’re serious about breaking into cybersecurity…

👉 Read more about the course:
https://selar.com/40nr6e776f

👉 Or explore the full AstralGuard Cyber Academy catalog:
https://selar.com/m/astralguard-cyber-academy

⚠️ Don’t stay stuck in theory.
Step into real-world hacking.

CyberSecurity #EthicalHacking #Pentesting #BugBounty #WebSecurity

💀 CSRF EXPLOITATION: Make Victims Hack Themselves 💀

Dallen Sadru — Tue, 24 Mar 2026 06:13:07 +0000

🚨 CYBERSECURITY LIVE EVENT ALERT 🚨

💀 CSRF EXPLOITATION: Make Victims Hack Themselves 💀
Hosted by AstralGuard Cyber Academy

What if you didn’t need to break into a system…
…but could trick the user into doing it for you?

This Wednesday, AstralGuard Cyber Academy takes you beyond theory and into a LIVE ATTACK SESSION where you’ll witness how hackers silently take control — without touching the target system directly.

⚔️ THIS IS NOT SLIDES. THIS IS REAL.

🔥 What’s Going Down
✔️ Live CSRF exploitation (step-by-step attack flow)
✔️ Crafting malicious requests & hidden forms
✔️ Forcing victims to execute actions unknowingly
✔️ Hands-on lab (you’ll try it yourself)
✔️ Real-world attacker mindset

💀 What You’ll Gain
✔️ Practical CSRF exploitation skills
✔️ Bug bounty & pentesting techniques
✔️ A powerful hacker mindset
✔️ Exclusive step-by-step CSRF Handbook

🎯 Who Should Join
• Aspiring ethical hackers
• Bug bounty hunters
• Developers tired of being vulnerable
• Anyone serious about real-world cybersecurity

📅 Event Details
🗓 Wednesday, 25th March 2026
⏰ 4:30 PM – 5:30 PM (EAT)
💸 FREE
🌐 Hosted by AstralGuard Cyber Academy | Live on Google Meet

🔗 Join Here:
👉 meet.google.com/ofm-ftkm-ccj

👉 Visit our Calendar for more events: https://academy.astralguard.online/calendar
Enroll in our courses: 👉https://academy.astralguard.online/courses

⚠️ If you attended the XSS + Session Hijacking session…
This is where things get dangerous 😈

Missed it?
No problem — just come ready to catch up FAST ⚡

🧠 No slides. No fluff.
Just real exploitation. Real skills.

🚀 AstralGuard Cyber Academy — Building Real Hackers.
🚀 Spots are limited — don’t miss this.

🚨 YOU'VE BEEN WARNED. 🚨

Dallen Sadru — Tue, 17 Mar 2026 16:04:08 +0000

Your cookies are being stolen. Your sessions are being hijacked. And you don't even know it's happening.
This Wednesday, we're showing you EXACTLY how it's done — live, in real time.
💀 XSS Exploitation & Session Hijacking Live Demo
The most dangerous web attack in the wild — broken down, step by step, right in front of your eyes.
We're not talking slides. We're not talking theory. We're talking real payloads. Real cookie theft. Real account takeover. All in a live hacking session you won't forget.

🎯 WHO IS THIS FOR?
✅ Bug Bounty Hunters looking to level up
✅ Penetration Testers sharpening their toolkit
✅ Developers who want to understand how their apps get owned
✅ Complete beginners ready to get their hands dirty
✅ Anyone who calls themselves a hacker 👀
If you breathe cybersecurity — this one's for you.

📅 DATE: Wednesday, 18th March 2026
⏰ TIME: 4:30 PM EAT
📍 WHERE: Google Meet — Online
💸 COST: Absolutely FREE. Zero. Nothing. Nada.

🎁 What you walk away with:
🔓 Hands-on XSS exploitation experience
🍪 Cookie stealing & session hijacking skills
📖 A FREE Lab Handbook on XSS exploitation — yours to keep forever
⚡ Practical knowledge you can use from day one

🔗 Secure your spot & view full details on our calendar:
👉 https://academy.astralguard.online/calendar
No excuses. It's free. It's live. It's hands-on.
Show up or get left behind. 💀

🛡️ AstralGuard Cyber Academy
Train. Defend. Dominate.

🚨 FREE CYBERSECURITY LIVE SESSION 🚨

Dallen Sadru — Sat, 14 Mar 2026 19:00:23 +0000

The Bug Bounty Trick for Finding Valid Users 🐞💻

Want to learn how ethical hackers discover real vulnerabilities in web applications? 👨‍💻🔥

Join our FREE community cybersecurity session where we’ll demonstrate a powerful bug hunting technique used by professionals — User Enumeration through Status Code Analysis.

This technique helps bug bounty hunters identify weaknesses in login and authentication systems.

📅 Date: Sunday, 15th March 2026
⏰ Time: 4:30 PM (EAT) — We start sharp!
🎟 Entry: 100% FREE for the cybersecurity community

Google Meet — Click to Join:
https://meet.google.com/zxw-rqko-tvs

In this session you will learn:
🔍 How hackers detect valid usernames in web apps
⚡ How HTTP status codes reveal authentication flaws
🛡 How companies accidentally leak sensitive information
💰 How bug bounty hunters turn these findings into real reports

Whether you're new to cybersecurity or exploring bug bounty hunting, this session will give you practical insight into real-world web hacking techniques.

🔥 Come learn. Come practice. Start your bug bounty journey.

👉 Event details & updates:
https://academy.astralguard.online/calendar

📢 Want to always get notified about our upcoming cybersecurity sessions?
Sign up here:
https://forms.gle/9prHHGS2XGGzpZTJ9