TRS Tanwar Ratan Singh & Associates Audit · Assurance · Cybersecurity
CISA · DISA · ISO 27001 Lead Auditor · FAFD

Protecting your business.
Securing your future.

Chartered Accountancy expertise fused with cybersecurity, IS audit and digital forensics — safeguarding the financial integrity and digital assets of businesses, banks and institutions.

ICAI FACULTY
RBI FRAMEWORK
ISO 27001
DPDP ACT
CA Ratan Singh Tanwar
CA Ratan Singh Tanwar
Chartered Accountant · Cyber & Forensic Audit Specialist
Credentials Chartered Accountant CISA DISA (ICAI) ISO 27001 Lead Auditor FAFD
CA Ratan Singh Tanwar addressing a workshop on Artificial Intelligence
Speaking at an ICSI workshop on Artificial Intelligence
15+
Years of practice
About

Where financial integrity meets digital trust.

In today’s digital era, financial success is incomplete without security and trust. I combine Chartered Accountancy with deep specialisation in cybersecurity, information systems audit and digital forensics — protecting both the books and the systems that hold them.

As an ICAI faculty member for Advanced ITT and Digital Forensics, I work with businesses, banks and institutions to strengthen IT controls, detect fraud, and ensure compliance with ICAI, RBI, DPDP and ISO 27001 standards.

Audit & Assurance IS / IT Audit Digital Forensics GST & Taxation
What I Offer

Specialised services across audit, security & advisory.

Discuss your needs →
01

Cybersecurity & IS Audit

  • —ISO 27001 implementation & audit
  • —IT general controls testing
  • —Data privacy & DPDP Act compliance
  • —Business continuity & DR audits
02

Digital Forensics

  • —Fraud detection & investigation
  • —Cyber forensic examination (FTK, EnCase, Autopsy)
  • —Litigation support & expert reporting
  • —Forensic accounting (FAFD)
03

Taxation & Advisory

  • —GST compliance & litigation support
  • —Income tax filing & appeals
  • —Project reports & CMA data
  • —Financial planning & consulting
04

Training & Workshops

  • —ICAI faculty — Advanced ITT & Forensics
  • —Corporate training in IS audit & cybersecurity
  • —Student mentorship & AI-in-audit awareness
  • —Seminars & expert sessions
Standards & frameworks I work within
ISO 27001 ◆ DPDP Act ◆ RBI Cyber Framework ◆ ICAI Standards on Auditing ◆ COBIT / NIST
Training & Speaking

Faculty for the next generation of auditors.

As an ICAI faculty member, I train Chartered Accountants, students and corporate teams on information systems audit, cybersecurity and digital forensics — bringing real-world casework into the classroom.

Book a training session →
ITT
Advanced Information Technology Training
FAFD
Forensic Accounting & Fraud Detection
IS
Information Systems Audit
AI
AI in Audit — awareness & tools
“

The team led by CA Ratan Singh Tanwar added real value to our audit processes — with detailed insight on internal controls, IT systems and cybersecurity.

Audit Committee · Banking client

Need expert guidance on cybersecurity or forensic audits?

Strengthen IT controls, detect fraud and ensure compliance with ICAI, RBI & ISO 27001 standards.

Request a Consultation →

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Join Us

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We collaborate with Chartered Accountants, IS auditors, forensic and cybersecurity professionals, and students. Share your details and we will reach out about assignments, trainings and knowledge sessions.

  • Audit & forensic assignments
  • ICAI-aligned trainings
  • Knowledge sessions
  • Articleship & internships

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