I'm Aryawardhan Singh, known online as 0x2458. I find vulnerabilities in web apps, APIs and GraphQL, then report them to the organizations that need to know.
Cybersecurity researcher and bug hunter specializing in penetration testing, bug bounty hunting and vulnerability assessment. I report security flaws to organizations like Apple, Google, Toyota and NASA, and compete in CTFs and security labs when I'm not hunting bugs.
Currently pursuing a B.Tech in CSE (Cyber Security) at Silver Oak University, focused on web and API security, secure coding and offensive techniques.
| location | Ahmedabad, Gujarat |
|---|---|
| focus | Web · API · GraphQL · Recon |
| education | B.Tech CSE-CS · 2025 to 2029 |
| handle | 0x2458 |
TSS Consultancy
Security Lit
Independent
3rd position. National Critical Information Infrastructure Protection Centre competition.
Placed among the top 15 teams in a national CTF competition.
Finalist in the national-level pentesting marathon.
| certification | CNSP | Certified Network Security Practitioner |
|---|---|---|
| certification | CASA | Certified API Security Analyst |
| education | B.Tech CSE-CS | Silver Oak University · 2025 to 2029 |
| prior | Class 12 | Krishna Public School · 2024 to 2025 |
Open to bug bounty collabs, research chats and security roles.
| location | Ahmedabad, Gujarat |
|---|---|
| response time | 1 to 2 days |
Escalate real incidents. Dismiss the noise. Three wrong calls ends the shift.