NerdsX Group · Thanjavur, India
Born in the city of the Big Temple. Built to defend the world.
NerdsX is the parent company of five businesses that learn, build and defend together, training talent in Thanjavur and protecting clients across India and the world.
- Group companies
- 5
- Regions with clients
- 6
- Managed defence (SOC)
- 24×7
- Open roles right now
- 0
Who we are
For a thousand years this city has built things to last.
We do the same for security: training people here, giving them a place to work, and putting them on real engagements for banks, hospitals, manufacturers and governments.
Each NerdsX company has its own focus and its own clients. Together they form one ecosystem, so talent that starts in Thanjavur can grow into a global-grade career without leaving home.
Our storyOur companies
A diverse portfolio with a shared purpose.
Five companies covering the full arc of a security career, and the full lifecycle of a client's defence.
DefendCyber security services
CyberNerds Solutions
There's a smarter way to protect your business.
Explore CyberNerds
Go deeperHardware, OT & automotive security
A0 Cyber Security
Where software security stops, we go further: into the hardware.
Explore A0
Go globalAI security, accessibility & compliance
A5 Cyber Nexus
Accessibility, audits & cyber defence, engineered for trust.
Explore A5
LearnCyber security training
Nerds Lab
Where cyber security excellence begins.
Explore Nerds Lab
BuildCoworking & community
Nerds Hive
Collaborate locally, impact globally.
Explore Nerds Hive
How the group works
One loop: learn, build, defend and teach forward.
Every company feeds the next. People who learn with us end up defending clients, then come back to teach.
- 01
Learn
Nerds Lab
Newcomers train in ethical hacking, penetration testing and SOC analysis.
- 02
Build
Nerds Hive
A shared roof in Thanjavur for our teams, learners and local startups.
- 03
Defend
CyberNerds · A0 · A5
Practitioners work real engagements for clients in India and abroad.
- 04
Teach forward
Back to the Lab
Experienced people return to Nerds Lab as mentors for the next batch.
What we do
Security, end to end.
From breaking in, to keeping watch, to proving compliance, and training the people who do it.
Offensive Security
- Web, mobile, API, network & cloud VAPT
- Red teaming & adversary simulation
- Hardware & firmware attacks
Managed SOC
- 24×7 SOC, SIEM & MDR
- Incident response
- Threat hunting
- EDR / XDR management
Data Privacy
- DPDP Act readiness & gap assessments
- Data mapping & privacy impact assessments
- Consent & privacy notice reviews
- Privacy by design for products
Dark Patterns
- Audits against India's 2023 dark pattern guidelines
- UX reviews for false urgency, drip pricing, subscription traps & more
- Remediation guidance for product teams
GRC & Compliance
- CERT-In, RBI, SEBI CSCRF & IRDAI
- ISO 27001, SOC 2, PCI DSS
- Gap assessments & audit readiness
- Virtual CISO
AI Security
- AI / LLM red teaming
- ISO 42001 readiness
- Secure design & development
OT & Automotive
- Vehicle & EV security testing
- OT / ICS assessments
- Medical device security
Accessibility
- WCAG 2.2 AA audits
- VPAT / ACR reports
- Remediation support
Cyber Training
- Ethical hacking
- Penetration testing
- SOC analysis
- Interview prep & placement support
The NerdsX Way
Values every company in the group shares.
- 01
Build to last
Fundamentals first, shortcuts never. Work that holds up when someone leans on it.
- 02
Grow at home
World-class careers shouldn't need a one-way ticket out of town.
- 03
Earn trust daily
Clients hand us their most sensitive systems. We act like it, every engagement.
- 04
Teach forward
Everyone who learns here owes the next batch a lesson.
Group leadership
Siva Tamilvanan
Founder, NerdsX
Siva Tamilvanan is the founder of NerdsX, the Thanjavur-based parent company of CyberNerds Solutions, A0 Cyber Security, A5 Cyber Nexus, Nerds Lab and Nerds Hive.
Together the group trains people in Thanjavur, gives them a place to work, and puts them on real security engagements for clients in India and abroad.
Global presence
From Thanjavur, for the world.
Our teams work from Thanjavur and serve banks, fintechs, hospitals, manufacturers and government bodies in India, and clients across the US, UK, EU, Singapore and the UAE.
- Banking & fintech
- Healthcare
- Government & PSUs
- Energy & utilities
- SaaS & cloud
- Manufacturing
- Automotive & EV
- Retail & e-commerce
- Startups & MSMEs
- HeadquartersIndia
- Clients inUnited States
- Clients inUnited Kingdom
- Clients inEuropean Union
- Clients inSingapore
- Clients inUAE
Careers
Build a world-class career without leaving home.
Every role across the NerdsX group is listed in one place. Apply once and our hiring team routes you to the right team.