Presentation Outline
Slide 1: Title
- Title: Privacy-First AI: Deploying Local LLMs on Windows for Secure, Scalable, and Cost-Efficient Data Workflows and Processes
- Subtitle: Achieve Data Privacy, Cost Savings, and Enhanced Productivity
- Presenter: CA Ankush Jain, FCA | CISA (US) | FAFD | DISA | CCAB(ICAI) | B.COM.(H) | CEH(US) | ISO 27001 LA | PCI DSS Imp (TUV) | Full Stack Software Developer |
- Slide 2: Disclaimer
- This presentation is for informational purposes only and is based on personal research and experience. It is not intended to promote or demotivate any technology or application.
- The implementation of any technology solutions should be evaluated against your organization's specific requirements, security policies, and regulatory obligations.
- Application of these use cases should be done in a safe environment and with proper guidance and research only.
Slide 3: The Challenge
- Financial institutions face a critical dilemma:
- Need to leverage AI capabilities for competitive advantage
- Must protect highly sensitive financial data
- Regulatory compliance requirements (DPDP, GDPR, etc.)
- Data sovereignty concerns
- Unpredictable cloud API pricing
Slide 4: The Solution - Local LLM Deployment
Security Architecture Deploying Local LLM

The security architecture ensures complete isolation of AI components while enabling secure integration with existing financial systems whether smallor large.
- Complete data sovereignty: Data never leaves your organization
- Enhanced security: No dependency on third-party security measures
- Simplified compliance: Meet regulatory requirements more easily
- Cost predictability: Eliminate per-token charges and API call costs
- Full control: Customize models for financial industry needs
Slide 5: Demonstration Overview & Tech Stack Used for Implementation of Security Architecture and Deploying Local LLM
- Ollama: Command-line local LLM deployment with API support
- LM Studio: User-friendly interface for model management and testing
- N8N Workflows:
- Automated PDF processing and vector storage
- Secure chat interface with locally stored data
- Data redaction for sensitive financial information
- Ollama LM Studio N8N Vector Databases Python Scripts, Pvt. Cloud Server
- Local LLM Model used :-
• Granite3.3:2b (Local System) • Plutus-3B (Local System)
• Gemma-3-4b (Local System) • GPT-4o-mini (Pvt Cloud)
Slide 6: Ollama - Local LLM Runtime
- Key Features:
- Open-source Application
- Download Link :- https://ollama.com/download/windows
- REST API with OpenAI-compatible interface
- Simple installation and model management
- Command-line and API access
- Ollama – Demonstration for performing OCR on image
- Command-line demonstration:
- Model list and availability
Ollama ls
- Download LLM model locally on system :-
Ollama pull granite3.2-vision
Run the application and Extract text and save it ocr.txt file using multi modal L
ollama run granite3.2-vision "Extract all text, focusing on extraction of full content D:\\Folder \\incometaxnotice.jpg" > ocr.txt


- Benefits for financial applications :-
- Offline anytime anywhere
- Perform OCR and Write letters secretly without any data leakage.
Slide 7: LM Studio - User-Friendly Interface
- Key Features:
- Open-source Application
- Download Link :- https://lmstudio.ai/
- Graphical interface for model management


- Built-in parameter tuning
- Document handling (PDF, DOCX, CSV)
- RAG capabilities for financial documents
- LM Studio - Demonstration
- User interface demonstration:
- Model discovery and selection
- Parameter configuration
- Chat testing interface
- Document processing capabilities
- CPU-optimized models for hardware flexibility
Slide 8: N8N - Workflow Automation
- Key Features:
- Visual workflow builder
- 400+ pre-built integrations
- Self-hosted environment
- Connects LLMs with business processes
- Audit logging and security controls
- Workflow #1 - Automated Document Processing
- Process Flow:
- Monitor folder for new financial documents
- Extract text from PDFs
- Split content into manageable chunks
- Generate embeddings using local LLM
- Store in PostgreSQL Vector Database
Trigger notification upon completion


- Live demonstration:
- Saving a financial PDF to monitored folder
- Automatic processing and chunking
- Vector storage process
- Database examination
- Setup and configuration overview
- Workflow #2 - Secure Chat Interface
- Process Flow:
- User submits question about financial documents
- System performs semantic search in vector database as created in Workflow 1
- Retrieves relevant document sections
- Local LLM generates response using document context
- All processing remains on-premises
- Workflow #2 – Demonstration


- Live demonstration:
- Chat interface for querying financial documents
- Question processing workflow
- Response generation using local LLM
- Performance and accuracy comparison
- Security advantages over cloud-based solutions
Slide 9: Workflow #3 - Data Redaction
- Process Flow:
- Extract text from financial documents
- Identify sensitive information using regex patterns:
- PAN numbers
- TAN numbers
- Aadhaar numbers
- Bank account details
- Apply redaction to masked patterns
- Output redacted JSON for secure sharing
- Workflow #3 – Demonstration



- Live demonstration:
- Processing document with sensitive information
- Pattern matching for financial identifiers
- Redaction process and output
- Verification of data security
- Use cases for redacted data
Slide 11: Hardware Requirements
Component | Minimum | Recommended for Production |
CPU | 4 cores | 8+ cores, AVX2/AVX512 support |
RAM | 16GB | 32-64GB for larger models |
GPU | Optional | NVIDIA with 8GB+ VRAM |
Storage | 20GB SSD | 100GB+ NVMe SSD |
Network | Isolated segment | Secure internal network |
Slide 12: Benefits for Financial Institutions
- Data Privacy: Never expose sensitive financial data to third parties
- Regulatory Compliance: Meet DPDPA, GDPR, GLBA, and other requirements
- Cost Savings: Eliminate unpredictable API costs
- Reduced Latency: Local processing for faster response times
- Customization: Tailor models to specific financial workflows
- Operational Control: Full visibility into all AI operations
Slide 13: Use Cases for Local LLMs in Finance
- Document Analysis: Process statements, contracts, filings
- Financial Advisory: Client portfolio analysis and recommendations
- Compliance Monitoring: Regulatory checks and documentation
- Risk Assessment: Credit analysis and fraud detection
- Market Analysis: Processing financial news and trends
- Customer Service: Secure chatbots for financial inquiries
- Healthcare: Process medical records with privacy requirements
- Legal: Contract analysis and document review
- Insurance: Claims processing and policy analysis
- Government: Sensitive document processing
- Education: Student data analysis with privacy compliance
Slide 14: Conclusion
- Local LLMs provide the security benefits of on-premises deployment while maintaining cutting-edge AI capabilities
- Complete data sovereignty with no compromise on functionality
- Cost-effective solution for financial institutions of all sizes
- Start with specific high-value use cases and scale gradually