Nickita Khylkouski

Founded Peak Security. We pentest websites cheaply and at scale, then report the vulnerabilities.
From $0 to six-figure MRR in four months. $350K profit since July 2026.
Ran around 19,000 assessments at an average cost of $1.50 each. Hard part is getting the right human to read the report.
Found and responsibly reported security issues involving a16z, Palantir, Thiel Fellows, Y Combinator, Broadcom, federal banks, and local governments.

Got into YC Fellows (NOT YC Startup School) with my brother as the only high schoolers and received a $20K grant.
Presented Peak Security at a YC Fellows Dinner and Demo Day.

Got into Palantir Valley Forge and received a $10K grant.
Used Palantir's software to develop Peak Security and analyze its traces; flew to New York with other high schoolers.

Paid security / software engineering intern, June–August 2026; only high schooler on the team.
Built and led the launch of Black-box Pen Tests; the launch reached ~150K views.

Hacked their platforms, reported the issues, then got hired.
AI Valley, October 2025–February 2026: Built judging software used by 5K+ hackathon users and helped host 19 events with 3,700+ attendees.
Judges keep finding ways to cheat, so I keep patching the judging software.
Cerebral Valley, December 2025–June 2026: Built the app and helped select 1,000 of 40,000 applicants for Anthropic Opus 4.7 / 4.8 events.

2nd place, $10K - YC Hack the Stackathon. Ranked 7,000+ hackers and predicted 1st and 3rd place before judging. We came 2nd, and our model missed us.
Audience Favorite - Alif × Replit World’s Greatest Tournament. Found vulnerabilities in oil ships in Venezuela and Nigeria and reported them within 36 hours. Watch our presentation.
Winner - AGI House AI4Healthcare, cua.ai Computer-Use Agents Hackathon, Replicate Hackathon, Dumb Hackathon, Single Shot Hackathon, AGI House × Omi, Hack for Social Impact.

May 24th, 2022 was a Tuesday. Give me any date and I'll tell you its weekday. I try to prove cool math things for fun. I built DateGuesser around the Doomsday algorithm.
Built Boids, a 2D and 3D flocking simulator, and Flatlander, a 3D world seen through one 2D slice. Give me five minutes and I'll make 4D make sense to you.
Working on my own math theorem right now. GPT-5.6 Pro, Opus 5.5, GPT-6 Pro, GPT-6.1 Pro, and Astra couldn't solve it either.

NK Lifts: 225 lb bench, 355 lb squat, 405 lb deadlift, sub-20-minute 5K - I'm pretty jacked.
Sauna: 15 to 20 minutes at 90°C. For fun, apparently.