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Co-founder / CTO
Inxtinct One
Security that does more than raise an alarm.
London, UK · Cybersecurity founder & product builder
I build products around problems I can't quite leave alone.
I'm Deepanjan Paul, a cybersecurity founder and product builder in London. I co-founded Inxtinct and now build Osiris. I also make smaller products when an idea refuses to leave me alone.
Selected work
Two security products, one shared belief.
Both started with the same frustration: security tools often spot the problem, then leave the difficult decision to the user.
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Co-founder / CTO
Osiris
Agentic security that catches the email that passes every check.
A closer look
What Inxtinct and Osiris are trying to fix.
01 · Inxtinct One
Security that does more than raise an alarm.
Inxtinct began with a frustration: most security tools spot danger, show an alert and leave the hardest decision to the user. We set out to make security that could explain what was wrong and help deal with it.
02 · Osiris
Agentic security that catches the email that passes every check.
Osiris is an enterprise email-security and Data Loss Prevention platform. It is built for the messages that look technically clean but still should not be trusted.
03 / Built on the side
Some ideas are worth building even when they aren't companies.
I learn fastest by making something. These projects started as small, specific ideas: a faster way to reply, a calmer task list, and a football argument turned into a game.
01 · AI / Productivity / Chrome Extension
Tappy
Your voice, one tap away.
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I made Tappy because copying a conversation into a chatbot, writing a prompt and carrying the answer back felt needlessly slow. It puts a draft reply inside Gmail, Outlook, Zoho Mail and LinkedIn, where the conversation is already happening.
02 · Productivity / Chrome Extension
Focusly
One thing at a time.
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I built Focusly for days when a long to-do list becomes its own distraction. You choose a task, give it a block of time, reorder the plan by dragging it, and get a notification when it is time to move on.
03 · Football / Simulation / Game
GOAT XI
Build the XI. Settle the argument.
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GOAT XI turns a familiar football argument into a playable one: pick your greatest eleven, set up a match and see how the simulation settles it.
Research project · Inxtinct
Cyber Lens
Cyber Lens asks what personal security could look like through smart glasses or a companion device, where a risky prompt can begin on a poster, screen or printed notice rather than in a browser tab.
A QR code on a poster or a shortened link on a public screen can start a digital interaction before a browser has enough information to help. The idea is to give people a useful warning at the point where that interaction begins.
Explore the research →Experimental concept · Not commercially available
- 01
Observe
Recognise a digital signal in the person's field of view.
- 02
Understand
Resolve the destination and assess the surrounding context.
- 03
Explain
Translate the signal into a clear, proportionate safety cue.
- 04
Assist
Offer a safe next step while leaving control with the person.
04 / Beyond technology
Beyond The Wicket
A cricket podcast I created and hosted from 2022–2024.
Cricket has always taken up a large part of my life outside work. I started Beyond The Wicket to talk about the game beyond the scorecard: its history, characters, tactics and endless arguments.
The early episodes focused on cricket history. Later ones followed current series and tournaments, usually through the questions fans were already debating.
Making 29 episodes taught me a different kind of craft: research, finding a point of view, shaping a conversation and keeping it worth listening to.
29
Episodes
2022–2024
Years active
Creator & Host
Role
05 / Along the way
A few milestones that mattered.
2019
UCL BaseKX Hatchery
Won a pitching competition while developing the early idea that became Inxtinct.
2023
UCL Demo Day
Inxtinct was selected to pitch at UCL's Demo Day.
2023
MSDUK Accelerator
Inxtinct was selected for the MSDUK Accelerator Programme.
2023
Jordan Startup Expo
Inxtinct received the Bootstrapped Startup of the Year award. I also spoke at the expo.
2024
UCL Engagement Award
Received the UCL Engagement Award from UCL Innovation & Enterprise.
2024
London Demo Day
Represented UCL with Inxtinct at London Demo Day alongside startups from major London universities.
2025
From pitching to judging
Returned to UCL as a mentor and judge, and did the same at the University of Westminster.
2026
Launching Osiris
Launched a bootstrapped enterprise agentic AI email-security platform.
The table eventually turned around.
Some of my first serious startup experience came through the UCL Hatchery. Years later, I returned to the same community to listen to new pitches, ask questions and help founders sharpen their ideas.
01
Build
Early Inxtinct
02
Pitch
Hatchery / Demo Days / startup programmes
03
Operate
Customers / products / company building
04
Judge
New founders pitching their own ideas
Working with founders.
I have spent enough time pitching my own companies to know which questions are useful. When I mentor or judge, I try to help founders test the idea, define the problem clearly and decide what needs to be built next.
UCL Hatchery
JudgeStartup judging and feedback.
SPERO
JudgeJudging early-stage founder pitches.
UCL entrepreneurship programmes
MentorMentoring founders and UCL Computer Science students exploring technology and entrepreneurship.
University of Westminster
Mentor & JudgeMentoring and judging early-stage founders and student ventures.
AI readinessEveryday Series
Innovation Manager / Consultant · Everyday Series
Helping people use generative AI to make something real.
For Everyday Series, I designed and ran generative AI programmes for early-career professionals and enterprise employees. The sessions focused on solopreneurship, AI agents and SaaS products.
- Participants worked alone and in teams to apply the ideas through practical projects.
- Weekly sessions took them from an initial idea towards an independent product they could take to market.
Recognition & speaking
The work, recognised and shared.
Recognition
UCL Engagement Award
UCL Innovation & Enterprise
2024
Bootstrapped Startup of the Year
Jordan Startup Expo
2023
MSDUK Accelerator
Selected company
2023
UCL Demo Day
Selected to pitch
2023
London Demo Day
Representing UCL
2024
Selected talks
A few talks about cybersecurity, products and entrepreneurship.
NIT Silchar
Visiting talkGuest speaker
Assam University
Visiting talkGuest speaker
University of Westminster
Visiting talkGuest speaker
Jordan Startup Expo
2023Speaker
Foundation
University College London
MSc Information Security · 2020
Leeds Beckett University
BSc Computing
Credentials
NCSC Certified Postgraduate
National Cyber Security Centre
Fortinet Certified Fundamentals in Cybersecurity
Fortinet
Before the startups
Before startups became my focus, I worked in information security. That experience gave me the technical grounding for the products I later built.
07 / About
Security is the core. Building is the habit.
I'm Deepanjan Paul, a cybersecurity founder and product builder based in London. I started in computing and information security, then became more interested in making products that could solve the problems I was seeing.
That led to Inxtinct, Osiris and smaller products across productivity, AI and sport. Much of my work now is deciding whether an idea solves a real problem, and whether the answer can be made simple enough for someone to use.
I also mentor and judge early-stage startup programmes. I have worked with UCL Computer Science students interested in technology and entrepreneurship, and spoken during visits to NIT Silchar, Assam University and the University of Westminster.
Away from work, I spend a lot of time on cricket, football, cinema, art, writing and whichever subject has caught my attention that week.
Community
Earlier on, that contribution took other forms: UCL Students' Union, Yorkshire Cricket Foundation, Leeds Beckett Students' Union and a few fundraising initiatives along the way.
Outside the work
My interests have never stayed particularly obedient to one category. Cricket and football occupy a fair amount of space, but so do cinema, art, technology, writing, history and whatever subject I've disappeared into that week.
- Cricket
- Football
- Cinema
- Art
- Technology
- Writing
- History
- Design
- 2
- Core cybersecurity ventures
- 3
- Independent digital products
- 29
- Podcast episodes
Good technology should reduce the amount you need to think about the technology itself.
That is particularly true in security. People shouldn't need to become security analysts just to make safer decisions online. The product's job is to turn complexity into something useful.
Interesting problems are usually worth a conversation.
If you're working on something thoughtful in security, AI or product, or want to talk about startups and mentoring, feel free to get in touch.