About
I'm Sudhakar Reddy — HackWithSKR, a penetration tester and Certified Ethical Hacker with 6+ years in VAPT across web apps, REST/GraphQL APIs, Android and iOS apps and enterprise networks. I've delivered 100+ VAPT, SAST and secure code review projects, found and validated 300+ vulnerabilities (RCE, SSRF, SQLi, IDOR, auth bypass) and reverse engineered 6000+ malware samples for SOC detection and threat intelligence.
Today I'm Co-Founder & CTO of CRIS InfoTech, where I set up the VAPT practice and extended it into AI/LLM, MCP and agentic AI security — with three AI security tools I built myself. I'm also Lead Cybersecurity Trainer at Hacktr Technologies, where I've trained 4000+ students into cybersecurity careers. Break it, fix it, teach it.
What I Do
I break
VAPT and WAPT across web apps, REST/GraphQL APIs, Android and iOS apps and networks — 300+ vulnerabilities found and validated, from IDOR to RCE.
I defend
SOC L1/L2 triage, SIEM detection engineering (SPL, KQL, Sigma), threat hunting, dark web monitoring and 6000+ malware samples reverse engineered.
I build
An AI pentest agent, an LLM security scanner and an AI-assisted intercepting proxy — in-house tools that speed up real VAPT delivery.
I teach
4000+ students trained in offensive, defensive and AI security — with labs, mock interviews and career support until they're hired.
What I Train
Classroom in HITEC City and live online at Hacktr Technologies — 80% hands-on labs, four daily batches, career support after the course.
Think like an attacker — from first scan to full red-team chains.
- 01
Ethical Hacker AI (CEH v13)
40 hrs · Beginner–Intermediate
OWASP Top 10Kali LinuxAI-driven recon - 02
Penetration Testing Professional & AI
60 hrs · Advanced
Active DirectoryIoT/OT testingExploit writing - 03
Web App Hacking & Security (WAHS)
45 hrs · Advanced
InjectionBusiness logicSAST/DAST labs - 04
API Security & Advanced Pentesting
35 hrs · Advanced
REST & GraphQLJWT & OAuth 2.0OWASP API Top 10 - 05
Mobile Application Security & Pentesting
50 hrs · Advanced
App reversingFrida hookingSSL pinning
What I Maintain
- CRIS InfoTech's VAPT methodology (OWASP WSTG, MASTG, API Top 10, PTES)
- Report templates with CVSS, PoC evidence and remediation — every report quality-reviewed
- A bench of 4 trained freelance testers — scoping, reviews and mentoring
- The AI attack agent and LLM scanner, re-tested on every change
- Hacktr's lab environments for VAPT, SOC, malware and red-team practice
- The Hacktr Technologies AI career portal for course access, progress and job readiness
- A personal home lab: Kali, FLARE VM, REMnux, Wazuh and Splunk
Bug Bounty
I hunt on public programs on HackerOne and Bugcrowd, using the same methodology I teach: recon pipelines, Burp-driven manual testing and business-logic abuse.
Companies & Portals
CRIS InfoTech
Crisinfotech Private Limited
Co-Founder & CTO · Jun 2025 – present
Hyderabad, India
- VAPT / WAPT, API & mobile pentesting
- SAST & secure code review
- AI / LLM & MCP security
- 24/7 SOC, forensics & incident response
Hacktr Technologies
Cybersecurity & AI training institute
Lead Cybersecurity Trainer
HITEC City, Hyderabad · live online
- 11 courses across VAPT, SOC & AI security
- Classroom + live online, 4 daily batches
- 24/7 online labs & recorded sessions
- 4000+ students trained
Hacktr Technologies AI
AI career portal for cybersecurity — built on the latest technologies
Product I'm building
Online · for students & job seekers
- Live cybersecurity & AI security job listings
- ATS-friendly resume builder
- AI mock interviews
- Course access & progress tracking
HackWithSKR
My personal brand & blog
Writer · researcher · mentor
You're here
- 50+ articles on VAPT, SOC, malware & AI security
- Vulnerability write-ups on LinkedIn
- Mentoring and speaking
Labs I Keep Sharp On
30 labs and platforms across 6 areas — practice never stops, alongside client work.
Web & API
6Offensive & red team
6SOC & blue team
4AI & LLM security
5Bug bounty
2My home lab
7Where I Work
Secure businesses, train the people who defend them, and help those people get hired.
CRIS InfoTech
Cybersecurity company where I lead technology and delivery — VAPT/WAPT, API and mobile pentesting, SAST, secure code review and AI/LLM security.
- ⟩VAPT practice & methodology I set up
- ⟩4-member tester bench I lead
- ⟩In-house AI attack agent + LLM scanner
- ⟩24/7 SOC, forensics and IR
Hacktr Technologies
Cybersecurity and AI security training institute in HITEC City, Hyderabad, where I lead all training.
- ⟩VAPT, SOC and AI & LLM Security tracks
- ⟩CEH v13-aligned, 80% hands-on labs
- ⟩Classroom + live online, 4 daily batches
- ⟩Placement & interview support
Hacktr Technologies AI
Hacktr's AI career portal, built on the latest technologies — course access, progress tracking, job listings, an ATS resume builder and AI mock interviews.
- ⟩Cybersecurity & AI security jobs
- ⟩ATS resume builder + AI mock interviews
- ⟩Job-readiness support for students
How I Find Bugs & Vulnerabilities
A repeatable, transparent 6-step methodology I apply to every engagement — from bug bounty to enterprise red team.
Recon & Scoping
Map the attack surface — assets, tech stack, exposed endpoints — and align on rules of engagement.
Threat Modeling
Identify high-value targets and likely attack paths using MITRE ATT&CK and OWASP frameworks.
Exploitation
Hands-on vulnerability discovery, chaining and safe exploitation with proof-of-impact.
Reporting
Executive summary + technical deep-dive with CVSS, business impact and reproducible PoCs.
Remediation Support
Work with your engineers — not just hand off a PDF — to close every finding the right way.
Retest & Harden
Verify fixes, document residual risk and feed findings back into your secure SDLC.
Let's Work Together
VAPT engagements, SOC consulting, AI/LLM security assessments, incident response or training at Hacktr Technologies — tell me what you're protecting and I'll reply within one working day.
1. Scoping call
30 minutes on what you need — apps, APIs, SOC, AI or training.
2. Proposal
Clear scope, rules of engagement, timeline and price.
3. Test, report, retest
Findings with PoC and fixes, then a free retest.
Security projects
CRIS InfoTech · Co-Founder & CTO
VAPT, SOC, AI/LLM security, forensics, incident response
contact@crisinfotech.comTraining & courses
Hacktr Technologies · Lead Trainer
Batches, corporate training, career & placement help
info@hacktrtechnologies.comTalk to me directly
Sudhakar Reddy · LinkedIn
Speaking, collaborations, mentoring — message me on LinkedIn
Message on LinkedIn