Sabarish.
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B.Tech CSBS '28 · Open to Internships

Sabarish R.

Third-year CSBS student. Five internships across cybersecurity, full-stack, and DevOps — each one ended with something deployed: threat-detection platforms, a MERN marketplace, and automated pipelines.

5 internships shipped — not shadowed.

Every placement ended with something deployed: threat-detection platforms, a MERN marketplace, automated Linux pipelines, ITSM workflows. I build AI & security systems that actually run.

Internship Experience

Where I've interned.5

TS
Cybersecurity Intern
TANSAM (TIDCO × Siemens)
April 2025
Chennai, India
  • Hands-on ethical hacking: Kali Linux, John the Ripper, steganography, traffic analysis
  • Developed Phishing Email Detection using Scikit-learn + NLP integrated with Gmail & CheckPhish APIs
  • Threat classification, risk assessment, incident response in simulated attack scenarios
  • Studied ISO 27001/27002, PCI-DSS, OWASP, SIEM, DDoS mitigation
SN
ServiceNow Platform Admin Intern
ServiceNow × SmartBridge × AICTE
Jun – Jul 2025
Remote
  • Automated ITSM workflows across Incident, Request, Change, Problem & Knowledge modules
  • Designed Service Catalog items, Flow Designer workflows, Visual Task Boards
  • Configured ACLs, roles, UI policies; earned ServiceNow University credentials
  • Cleared the ServiceNow Certified System Administrator exam on the $300 voucher the program provided
SS
Cybersecurity Intern
Shentinelix Sphere Pvt. Ltd.
Sep 2025 – Dec 2025
Remote
  • Developed AI-driven threat detection and LLM security systems aligned with SOC workflows
  • Built platforms to analyze emails, URLs, QR codes, and logs with LLM API integration
  • Implemented prompt security controls — PII redaction, injection detection, RBAC, rate limiting
  • Hands-on OWASP Top 10, SIEM, Snort IDS, Active Directory attacks & HIPAA compliance
SB
Full Stack Developer Intern (MERN)
SmartBridge × AICTE
Dec 2025 – Jan 2026
Remote
  • Built full-stack freelancing marketplace — project posting, proposals, real-time messaging
  • JWT + Bcrypt auth, Socket.io live chat, end-to-end API design with Express
  • Completed MongoDB Node.js Developer Path certification during internship
LX
Linux & DevOps Intern
Learnix Labs
Jun – Jul 2026
Remote
  • Scripted a bash monitor to log CPU, memory & disk usage, scheduled via cron every 5 minutes
  • Ran an app as a custom systemd service behind an Nginx reverse proxy, hardened with UFW (ports 80 & 22 only)
  • Built automated infrastructure — scripted provisioning, centralized logging, and kill-and-recover resilience testing
  • Recognized as a Featured Outstanding Intern — Summer Internship 2026 (July Cohort)
Selected work

Things I've built.

SIH 2026

AI Email Threat Detection & Forensic Intelligence

Smart India Hackathon 2026 platform (AICTE problem statement) that detects phishing, BEC & malware emails and traces the sender. • Adaptive ML ensemble (XGBoost + LightGBM + DistilBERT) trained on 30k+ emails • Fuses VirusTotal, SafeBrowsing, PhishTank & AbuseIPDB into one 0–100 risk score • SPF/DKIM/DMARC header forensics, live threat map, Gmail inbox scan & .eml upload • URL-guard browser extension with click-to-scan and auto-block

PythonFlaskSocketIOScikit-learnLLM APIVirusTotalReportLab
SOC AUTOMATION

SOC Log Analyzer — Detection & Incident Response Engine

Log-driven SOC analysis engine, split out of the earlier threat-detection platform into a standalone service. • Maps events to MITRE ATT&CK techniques and correlates IOCs across pipelines • Monitoring rules with live ingest, alerting and incident response playbooks • FastAPI surface for analyze / history / MITRE mapping / incidents — 31-test suite, CI green

PythonFastAPIMITRE ATT&CKPydanticPytest
AI SECURITY

LLM Guardian — Security Firewall for LLM Apps & AI Agents

Unified guardrail layer for LLM applications and agentic systems — the flagship that absorbed three earlier security builds. • 10 detectors covering prompt injection, PII, toxicity, URL threats, keyword & length policy • Verdict engine — allow / sanitize / quarantine / block — with Redis telemetry and a live SOC console • MCP tool-call security: tool poisoning, data leaks and multi-tool correlation; JWT + RBAC admin API • Compliance modes, safe-prompt cache and audit-ready reporting

PythonFastAPIRedisNext.jsMCPWebSockets
IEEE CONFERENCE

AI-Kavach — Cyber Defense System

Co-developed, IEEE-presented platform defending users against modern web vulnerabilities. • Detects malicious phishing sites, malware, and anomalies • Implements client extension and centralized cloud telemetry • Triggers threat alerts and automated response actions

PythonScikit-learnChrome ExtFlaskBrevo API
Capabilities

What I work with.

Security10 tools

From the SOC floor to CTF rooms — detection, response, and offensive testing.

Kali Linuxdaily driver at TANSAM & THM — John, stego, traffic analysisLinuxLearnix: cron monitoring, systemd services, UFW hardeningWiresharkCarnage & Snort rooms — malicious traffic analysisSIEMShentinelix SOC workflows; Snort IDS pipelinesOWASPTop 10 in practice at Shentinelix & THM roomsThreat Detectionemail, URL, QR & log scoring — mailforensic-ai, SOC analyzerMITRE ATT&CKtechnique mapping & event correlation in the kill-chain engineIncident ResponseTANSAM attack sims; response playbooks in the SOC analyzerPenetration TestingAD attacks (Attacktive Directory) & PT rooms on THMTryHackMeTop 5% global · Platinum League · 48 labs
AI & Machine Learning8 tools

Ensembles, retrieval and agent guardrails — models on real request paths.

Scikit-learnSIH ensemble — XGBoost + LightGBM at 97%+ AUC 0.99XGBoost / LightGBMgradient-boosted scoring in 5 builds, incl. the SIH fusionPyTorch / TransformersDistilBERT in the SIH ensemble; bi-encoder shipped as a 32MB ONNX modelNLPphishing classification at TANSAM; PII redaction & toxicity scoringLLM Integrationscoring, SOC alerting & guardrails on live request pathsMCPtool-call security in LLM Guardian; MCP tools in AgentFlowPrompt EngineeringPromptSentinel & LLM Guardian — injection defenseRAGVeriGround claim verification; FAISS retrieval in PolicyPilot
Full Stack Development11 tools

APIs, dashboards, and shipping full products end to end.

Pythonprimary language across the security and ML buildsTypeScript12 repos — typed dashboards and Express APIsReact.jsSOC dashboards & the SIH live threat mapNext.jsPathFinder AI, this portfolio and the blogExpress.jsNode APIs — MERN marketplace, Smart Stadiums (JWT + Bcrypt)FastAPILLM Guardian, SOC analyzer & AutoTriage servicesFlaskSIH forensics platform & AI-KavachPostgreSQLAutoTriage & AgentFlow data layersMongoDBfreelancing marketplace data layer (Node path cert)RedisLLM Guardian event telemetry & safe-prompt cacheWebSocketslive SOC, stadium and threat-map updates
Cloud & DevOps10 tools

Where the builds actually run — deployed, not just local.

Docker17 repos containerized — compose stacks & Render deploysGoogle Cloud Rundeployed agent workflows (AgentFlow, Google ADK)Google ADKmulti-agent orchestration with MCP tool serversGitHub Actionslint, test and deploy CI across the reposNginxLearnix: app served behind a reverse proxysystemdLearnix: service unit, logging and kill-and-recover testGCPCloud Run, AlloyDB and Firestore deploymentsFirebaseauth, Firestore & telemetry on web buildsVercelthis portfolio and the blogRenderAutoTriage & the SIH forensics platform (render.yaml)
Foundation

What I've earned.

PE
B.Tech in Computer Science and Business Systems
Panimalar Engineering College, Chennai
2024 – 2028 · 3rd Year, 5th Semester
CGPA 8.2 / 10.0

Certifications

ServiceNow Certified System Administrator (CSA)
ServiceNow
2026
View credential
Google Cybersecurity Specialization
Google (via Coursera)
Jun 2025
View credential
Machine Learning Specialization
DeepLearning.AI × Stanford (via Coursera)
Aug 2025
View credential
Competitions

Where I've competed.

HCLTech AMPlified — Season 1 · AI Challenge
Team Lead · Team PERCEPTRON · Top 25 of 4,839 students

Led Team PERCEPTRON — a 5-member squad — as Team Lead through HCLTech AMPlified: The AI Challenge Season 1, coordinating the evidence pipeline, graph scheduling, and ML model work across the team; shortlisted Top 25 of 4,839 registered students across 97 partner colleges, then pitched PathFinder AI before the HCLTech panel in Round 2 and placed 3rd nationally. Built the evidence-based adaptive learning path engine: Noisy-OR evidence model over GitHub/LeetCode/resume signals, a 211-skill DAG scheduled with Kahn's algorithm, and a fine-tuned bi-encoder lifting Recall@5 from 56.9% to 93.8%.

3rd Place — National Final
Learnix Labs — Outstanding Intern Recognition
Featured Intern · Linux & DevOps · July Cohort 2026

Recognized as one of the Outstanding Interns in the Learnix Labs Summer Internship 2026 (July Cohort) for technical quality, consistency, and execution — automated workflows, managed infrastructure, and implemented efficient DevOps practices on real-world projects.

Outstanding Intern
RUSH HOUR 24H Hackathon — MCP Guardian
Cyber Security track · Sathyabama IST

Team-built MCP Guardian — a real-time security layer for AI agents that detects and blocks prompt injection, tool poisoning, malicious documents, and sensitive data leakage before they reach the model or external tool. I owned the backend detection pipeline, API layer, and authentication system.

Built & Shipped in 24H
TryHackMe — Top 5%
Maintained a 44-Day Learning Streak

Reached Top 5% and Platinum League on TryHackMe with a 44-day streak across OSINT, malware analysis, Active Directory attacks, and penetration testing rooms.

Top 5% GlobalPlatinum League Achieved44-Day Learning Streak48 Labs Completed
Top 5%
Research

Papers I've written.

VeriGround: A Retrieval-Grounding Verification Framework for Claim-Level Hallucination Detection in RAG Systems
Sem V · Technical Skills & Research Writing — Core Paper
Panimalar Engineering College — IEEE format

First-author framework that catches hallucinations claim-by-claim in RAG systems: decomposes generated answers into atomic factual claims and verifies each against the retrieved evidence using a weighted fusion of semantic similarity, entity overlap, and NLI — surfacing Supported / Unsupported verdicts with explanations through a live auditing dashboard.

Ongoing academic paper (first author) — IEEE format · not yet published
GitHub
Unmasking QRishing: From Convenience to Concern in Modern Cybersecurity
3rd ICAICCIT 2025
Co-Sponsored by IEEE Delhi Section

Analyzed QRishing attack vectors, proposed ML-based detection and mitigation strategies with defensive measures for QR code exploitation.

Conference presentation — not a peer-reviewed IEEE Xplore publication
PromptSentinel: Responsible AI Prompt Management
IEEE Student Event
Panimalar Engineering College

Developed middleware for real-time prompt compliance, PII redaction, toxicity detection, and responsible AI output validation.

Conference presentation — not a peer-reviewed IEEE Xplore publication