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NishchalSreevathsa/README.md

Hi, I'm Nishchal! πŸ‘‹

πŸ–₯️ About Me

I’m a passionate Cybersecurity Professional with a strong focus on Security Operations, Threat Hunting, Incident Response, Vulnerability Management, and Cloud Security.
I have hands-on experience with Kali Linux, Metasploit, Splunk, Microsoft Sentinel, Defender, CrowdStrike, Nessus, Qualys, and Rapid 7.
I enjoy solving complex security challenges, building detection tools, and sharing my knowledge through writeups.


πŸŽ“ Education

  • Master of Science in Cybersecurity of Networks
    University of New Haven - Dean Scholarship Recipient β€’ TCOE Outstanding Service Award in Cybersecurity & Networks
  • Bachelor of Engineering in Information Science and Engineering
    Visvesvaraya Technological University

πŸ’Ό Work Experience

Amby, Inc (Surge.Build)

Blockchain Security Engineer | Nov 2025 – Present

  • Owned end-to-end security for a Bitcoin-native credit line product spanning smart contracts, mobile apps, backend APIs, and cloud infrastructure across 3 production environments.
  • Audited smart contracts and remediated 10+ critical vulnerabilities β€” reentrancy flaws, logic errors, and access control bypasses β€” eliminating high-severity exploit paths before launch.
  • Designed and deployed Wazuh SIEM integrated with GCP, onboarding 25+ log sources across firewall, endpoint, and cloud layers to achieve full-stack network visibility.
  • Hardened GCP networking with least-privilege IAM, ACLs, and DMZ architecture aligned with CIS Controls v8 and NIST CSF; measurably reduced attack surface across all 3 environments.
  • Conducted mobile penetration testing on the Surge Credit app (Kali Linux, Genymotion, Metasploit, Burp Suite, OWASP MAS); uncovered and remediated auth bypass, API abuse, and data leakage risks.
  • Led secure code reviews and GitHub Advanced Security scans (Semgrep SAST, Gitleaks secret detection); resolved 20+ exposed API keys and hardcoded secrets before they reached production.
  • Built STRIDE/PASTA threat models via OWASP Threat Dragon across blockchain, mobile, backend, and cloud layers; authored operational runbooks enabling 24x7 SOC coverage.
  • Evaluated 50+ threat feeds, defined false positive reduction strategies, and implemented RAG pipelines + MCP agents enabling analysts to query threat intelligence via natural language.
  • Supported GDPR, CCPA/CPRA, and FinCEN compliance requirements across the platform.

A3 Tech Solultions LLC

Cybersecurity Analyst | Jun 2024 – Oct 2025

  • Built Python-driven CI/CD security pipeline integrations combining SAST, DAST, and dependency scanning tools, reducing exploitable vulnerabilities reaching production by 40%.
  • Automated log collection, SIEM ingestion, and compliance reporting workflows to satisfy SOC 2 audit requirements, reducing manual evidence collection time.
  • Collaborated with engineering teams to embed vulnerability management into CI/CD delivery pipelines and change management, lowering mean-time-to-remediation for critical findings.
  • Assisted in incident response exercises and troubleshooting misconfigured systems impacting logging and monitoring.

Ambrosia Systems Inc

Cybersecurity Analyst | Sep 2024 – Jun 2025

  • Built and tuned Splunk dashboards with optimized log parsing and correlation rules, improving anomaly detection and reducing false positive volume.
  • Spearheaded STRIDE threat modeling for Continuous Glucose Monitoring (CGM) mobile apps and cloud-backend telemetry, identifying 15+ high-risk attack entry points.
  • Automated SIEM log ingestion and compliance reporting workflows, eliminating hours of manual evidence collection per SOC 2 audit cycle.
  • Built and tuned Splunk dashboards with optimized log parsing and correlation rules, reducing false positive volume across multi-source pipelines and improving detection accuracy.
  • Mapped all findings to MITRE ATT&CK TTPs and triaged IOCs via structured workflows, cutting mean investigation time by 30% and accelerating analyst response.
  • Analyzed Nessus and Qualys scanner outputs; briefed leadership on security posture and guided engineering on CVSS-based remediation priority for medical device integrations.
  • Executed endpoint containment using CrowdStrike and Microsoft Defender EDR, reducing attacker dwell time and halting lateral escalation across 200+ endpoints.
  • Investigated lateral movement, BGP anomalies, and TCP/UDP-layer threats via Wireshark packet analysis; ensured HIPAA-aligned logging practices.
  • Assisted in incident response exercises and resolved misconfigured systems impacting logging and monitoring visibility, strengthening overall detection posture.

IQ4

Cybersecurity Analyst Internship | Oct 2022 – Jan 2023

  • Performed breach analysis and mapped mitigations to NIST CSF and ISO 27001 controls; authored incident response playbooks and tabletop simulation reports adopted by the operations team.
  • Conducted third-party risk assessments and vendor security reviews.
  • Analyzed packet captures using Wireshark to identify lateral movement and suspicious DNS queries and attack paths; submitted structured IOC reports to the threat intelligence pipeline.
  • Researched emerging threat actor TTPs and mapped them to MITRE ATT&CK Framework and Lockheed Kill Chain to support threat data labelling and ML model training.

Cerner Corporation

Delivery Consultant | Aug 2021 – Jul 2022

  • Conducted security testing and ensured HIPAA compliance of EHR systems.
  • Performed security testing (regression, UAT, edge-case) to ensure EHR platform compliance with HIPAA.
  • Coordinated configuration and patch management activities, reducing misconfiguration incidents.
  • Supported go-live and post-deployment triage, resolving 90% of critical issues within 24 hours.
  • Led root-cause analysis and SQL fixes to improve build stability to 98%.
  • Collaborated with technical support to resolve production network and system incidents.

Benson Service Private Limited

Software Engineer Intern | Aug 2029 – Jul 2021

  • Implemented API rate limiting and input validation mechanisms, improving application security and reducing exposure to common web threats including injection attacks and unauthorized requests.
  • Developed and maintained responsive web application components using HTML, CSS, JavaScript, and XAMPP with MySQL databases and REST APIs, supporting dynamic application functionality.
  • Configured DNS records and domain settings for web application deployment, supporting reliable access and improving domain resolution and service availability.
  • Assisted in cloud-based application deployment and environment configuration, supporting development and testing workflows for multiple web application modules.
  • Conducted manual and regression testing across multiple release cycles, identifying critical defects prior to deployment and improving overall application stability.

πŸ… Certifications



⚑ Projects

  • Fresh Connections Grocery Chain Networks
    Designed a secure, high-availability network using OSPF, DMZ, ASA Firewalls, IDS/IPS, VPNs, VLANs, and AI-based threat detection, improving uptime by 30%.

  • Hypervisor-Based Secure Windows Environment Simulation
    Created and hardened a multi-tiered Windows environment with domain policies, WSUS, IIS, PowerShell, and NTFS security.

  • Simulated Campus Network Penetration Testing
    Performed penetration testing with tools like Metasploit, Burp Suite, Kali Linux, exploiting SQL injection, XSS, and CSRF vulnerabilities.

  • IntelliHome IoT-Based Smart Living Automation
    Architected an IoT smart home system that increased energy efficiency by 30% and reduced energy costs by 25%.

  • Securing Cloud Infrastructure with AWS IAM
    Developed scalable AWS IAM architecture for secure intern onboarding under least-privilege principles.


πŸ›‘οΈ TryHackMe Badges

TryHackMe Badge

Blue Teaming Milestones

  • Just have to deal with it
  • The Course Awakens
  • Shield Apprentice
  • Skilled Navigator
  • Terminated!

Red Teaming Milestones

  • Metasploitable
  • Pentesting Principles
  • Blue
  • Burp'ed

Foundations Milestones

  • Networking Nerd
  • World Wide Web
  • Webbed
  • cat linux.txt
  • Sword Apprentice
  • Cyber Ready

Miscellaneous

  • Calculated Risk
  • Introduction to Security Engineering

πŸ“« Connect with Me

GitHub
LinkedIn
TryHackMe


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