About us
About Tosh Defence, the company behind SANKET
Tosh Defence Private Limited is an AI-first defence technology company, established in 2024 and headquartered in India, that designs, builds and supports SANKET (Sanket.Chat), its sovereign secure communication platform. SANKET serves defence forces, government, law enforcement and critical infrastructure operators that cannot hand their infrastructure, keys or logs to an outside party.
Built in India, for sovereign nations.
Sanket.Chat by Tosh Defence Private LimitedAbout SANKET
SANKET (संकेत, "signal") is a sovereign secure communications platform built by Tosh Defence for defence forces, government departments, intelligence and law-enforcement agencies, critical infrastructure operators and other organisations whose communications must stay confidential even if the network, the hosting provider or the communications provider cannot be trusted.
- End-to-end encrypted messaging, file exchange, voice and video calls and priority broadcast, built on Signal's independently audited libsignal with post-quantum PQXDH and SPQR, and AES-256
- Server-blind content: the server relays ciphertext and never holds the keys to messages, files, calls, reactions or encrypted broadcasts
- Sovereign and self-hosted: one dedicated installation per organisation, on infrastructure it owns, including closed and air-gapped networks, with no third-party analytics and no foreign runtime dependency
- Organisational control: administrator security keys, device approval and revocation, signed device lists, device mutual TLS, hash-chained audit logs and signed, verifiable releases
- Native apps for Android, iOS, Windows, macOS and Linux
About Tosh Defence
Tosh Defence is an AI-first defence technology company building sovereign intelligence systems that nations can deploy without foreign dependency, across cyber security, communications, IoT and autonomous systems.
Its mission is to build defence technology that sovereign nations can deploy in days, scale across borders and trust completely, because national security should never depend on a foreign vendor. Established in 2024 and headquartered in India, it builds for the world.
Tosh Defence Private Limited designs, builds and supports SANKET, its sovereign secure communications platform for organisations that cannot hand their infrastructure, keys or logs to an outside party.
- Established
- 2024
- Headquarters
- India
- Legal name
- Tosh Defence Private Limited
Founder
Toshendra Sharma
Founder and CEO, Tosh Defence
Toshendra Sharma is the founder and CEO of Tosh Defence Private Limited. A computer science graduate of IIT Bombay and an entrepreneur for the last 18 years, he is a known face in the industry, with previous bootstrapped and funded startups in the blockchain, education and AI space, and was named in Forbes Asia 30 Under 30.
Office and contacts
Office
Tosh Defence Private LimitedSpringhouse Co-working, LG-06, DLF Grand Mall, Near Sinkandarpur Metro Station, DLF City Phase-1, Gurgaon, Haryana-122002, India
Business enquiries and demonstrations
[email protected]Security reports
[email protected]Frequently asked questions
Who makes SANKET?
SANKET (Sanket.Chat) is designed, built and supported by Tosh Defence Private Limited, an AI-first defence technology company established in 2024 and headquartered in India.
Who founded Tosh Defence?
Toshendra Sharma, Founder and CEO. A computer science graduate of IIT Bombay and an entrepreneur for 18 years, he was named in Forbes Asia 30 Under 30.
Where is Tosh Defence based?
Tosh Defence is headquartered in India, with its office in Gurgaon, Haryana, and builds for sovereign nations worldwide.
What is Tosh Defence's mission?
To build defence technology that sovereign nations can deploy in days, scale across borders and trust completely, because national security should never depend on a foreign vendor.
How do I report a security issue in SANKET?
Email [email protected] and allow time for a fix to reach customer installations before any public disclosure. Reports are acknowledged and handled in confidence.
Talk to the team behind SANKET
Request a briefing, a technical evaluation or the controlled edition of the SANKET whitepaper.