New startup ideas · B2B, security and compliance · Security and compliance

startup idea

Sentinet

Shared-defense agent for small firms: one member's confirmed fraud warns the whole network.

Sentinet connects in an afternoon to an SMB's mailbox, accounting system and bank feed, and runs an agent that screens invoices, vendor bank-detail changes and unusual logins.

AI agent as a service
Small business
$1-10B market
Network effects, winner takes most
US first

4/5

venture judge

similar startups, last 2 years (2 all-time)

97%

of 3 nearest real companies still alive

sector

88 public grants in this sector, none matching the idea's terms

Test it before you build it

$700 · 4 weeks · 25 prospects

For $700 in 4 weeks, prove DFW trade suppliers will prepay $199 a month for pooled fraud warnings and contribute their own confirmed incidents to the pool.

Riskiest assumption · Owners and controllers of DFW trade suppliers will prepay for fraud warnings and will contribute their own confirmed fraud incidents to a pool their competitors can see; if they hoard incidents or treat this as a $99 nice-to-have, the network never gets dense enough to retain anyone.

1Focus group: who and where

The owner or controller of a construction, HVAC or plumbing supply distributor in Dallas-Fort Worth, 10 to 150 employees, approving 200 or more vendor invoices a month, who has seen a vendor bank-detail change request or a fake invoice cross their desk this year

where to find 25 · CFMA Dallas/Fort Worth chapter meetings, where controllers of these firms already gather monthly; the HARDI and American Supply Association member directories filtered to the DFW metro; TEXO's supplier-member list on the Dallas AGC/ABC side; then referrals from each interviewee's own AR clerk, since these firms all know each other

2Sell first, build later

Founding membership in the DFW trade-supplier fraud network: pooled warnings on your vendors, plus invoice, bank-change and login screening, live within 60 days of the 25th member joining, onboarded in one afternoon

the ask · $199 per month, locked for 12 months as the founding rate against the standard $299

a real yes · A paid $199 invoice is a yes; a compliment at a CFMA meeting, a 'send me info', or an unpaid promise to join once others do is a no

3Small experiments

The first one attacks the riskiest assumption; each ends with a number that says whether to run the next.

1. Fraud incidence and sharing calls
$500 · 12 days
Book 15 twenty-minute calls with owners and controllers recruited at a CFMA DFW chapter meeting and by phone from the HARDI and ASA directories. Ask what invoice fraud and bank-change attempts hit them in the last 12 months, what it cost, and the hard question: would you post a confirmed incident to a pool your competitors can see. One founder runs all calls off a fixed script.
keep going if · 9 of 15 report an attempt in the last 12 months, and 8 of 15 say yes to contributing confirmed incidents to a shared pool
2. Vendor overlap census
$0 · 12 days
During each call, collect the firm's top 20 vendors into an anonymized spreadsheet. Count pairwise overlap across all lists to test whether the DFW graph is dense enough for warnings to fire in week one, which is the entire network premise.
keep going if · 8 of 12 collected lists share 5 or more vendors with at least one other list
3. Founding member prepay
$200 · 14 days
End every call with the founding offer: $199 a month locked for 12 months, network live once 25 DFW suppliers join, first month invoiced today. Send a QuickBooks invoice the same day, because these buyers pay vendor invoices through AP daily and a payment link would read as consumer software. A one-page site backs the offer for forwarding to partners.
keep going if · 6 of 20 offered firms pay the $199 invoice within 7 days of receiving it

4Collect a deposit up front

Tesla took $1,000 refundable reservations for the Model 3 and $100 for the Cybertruck before building either: the deposit is the measurement, not the revenue.

$199

per prospect, refundable

how · First month prepaid as a founding member on a QuickBooks invoice approved through the firm's normal AP process, signed off by the owner or controller; chosen because this buyer pays invoices every day and treats paying one as a real commercial decision set up: Stripe Invoicing ↗

what it reserves · One of 25 founding slots in the DFW cohort, the $199 rate locked for 12 months, and their vendor list onboarded first so their warnings fire earliest

refund · Refunded in full on request any time before go-live, and automatically if the network is not live with 25 members within 60 days.

target · 6 paid invoices from 20 offers within 30 days

before taking money · Do not connect to any member's live bank feed or mailbox during the test; run warnings from manually reported incidents until counsel has reviewed GLBA and the data-sharing terms members sign.

Go: build it if

9 of 15 calls report a fraud attempt in the last 12 months, 8 of 12 vendor lists share 5 or more vendors, and 6 of 20 founding invoices are paid within 30 days: build.

Kill: stop if

Fewer than 3 of 20 pay the $199 invoice, or fewer than 5 of 15 will contribute confirmed incidents to a pool competitors see, or median vendor overlap is under 3 vendors: stop.

5 Scripts to run itoutreach message, landing copy, deposit terms · click to open

outreach message

You run AP for a supply house that pays hundreds of vendor invoices a month, and the fake bank-detail change emails are getting better every quarter. I am building a shared warning network for DFW construction and HVAC suppliers: when one member confirms a fraudulent invoice or a switched account number, every member that touches that vendor gets a signed alert within minutes. I am signing 25 founding members at $199 a month, locked for a year. Can I get 20 minutes this week to compare notes on what has hit your desk?

landing page

One supplier's confirmed fraud warns every supplier in Dallas $199 a month, locked for a year, first month invoiced today: pooled vendor alerts plus invoice and bank-change screening Join the 25-member founding cohort

deposit terms

Your first month of $199 is invoiced today and reserves one of 25 founding slots in the DFW network at $199 a month, locked for 12 months. If the network is not live with 25 members within 60 days, the $199 is refunded in full, and you can cancel for a full refund any time before go-live. Onboarding takes one afternoon once we go live.

Would you run this test?

One tap. The yes-share feeds the Demand pillar of this idea's score; nobody sees who answered.

Budgets are out-of-pocket estimates for a team of one to three, US market. Size the deposit to the deal, and check the terms before taking money in a regulated line.

Scorecard

One score that balances how trendy the idea is, the demand for it and its potential for 100x, with competition measured relative to every other idea in the catalog. Recent startup trends first, government priorities second.

Idea Score, 0-100 · raw 56.0 x 1.61

Warm

competition: more crowded than 20% of ideas · headwind x0.90

+0.0

government priorities, secondary (0 matching grants)

Trend

Is the wave forming now? 2025-26 entrants vs 2023-24, rounds since 2025, the sector's live-batch direction, the 2026 trend analyst.

Entrants 2025-26 vs 2023-24 (similar companies)70
Rounds announced 2025+ in the sector47
Sector direction (live batch)100
2026 trend analyst50

Demand

Does anyone want it? YC's current RFS, companies already paid for something similar, the operator judge, founders' yes-rate in decks, readers who would run the test.

YC asks for it (current RFS: idea / sector)60
Someone already pays (similar companies, recent / all-time)17
Operator judge: real pain75

100x potential

Can it return a fund? The venture judge (double weight), market-size and moat axes, neighbours still alive, the technologist judge.

Venture judge75
Market size axis33
Moat axis100
Technologist judge75

Score = 100 x cbrt(Trend x Demand x 100x) x (1 - 0.5 x crowding) + government bonus (max 5), calibrated so the 95th-percentile idea scores 90 (order never changes). A geometric mean: a weak pillar cannot be papered over. Percentiles are among the 272 ideas in the catalog; the terms matched were shared-defense, firms, member, confirmed, fraud, connects, afternoon, smb.

The idea in full

What: Sentinet connects in an afternoon to an SMB's mailbox, accounting system and bank feed, and runs an agent that screens invoices, vendor bank-detail changes and unusual logins. What makes it different is the pooled layer: when any member confirms a fraudulent invoice, spoofed domain or mule account number, a signed warning reaches every other member that touches that vendor, domain or account within minutes. Self-serve at $99 to $399 a month, with a small verification desk that confirms escalations before they hit the network.
Why now: The SBA's 'MANUFACTURING AND SMALL BUSINESS CYBERSECURITY RESILIENCE PROGRAM 2026' closes 2026-09-04 and is pushing money at exactly this buyer, and Inforcer raised $50M on 2026-07-30 to help smaller businesses handle AI and security risk. The radar shows Strongkeep (500global) selling affordability to the same segment and MouseCat (yc W26) and Incandor (yc X26) selling fraud intelligence to financial institutions, but nothing pooling signal between the small businesses themselves.
Wedge: first customer and entry point: Trade suppliers in one metro: construction, HVAC and equipment distributors, who share the same vendors and payment habits. Fifty of them in one city creates enough vendor overlap for the pooled warnings to fire in week one, and each one refers its own suppliers.
Path to 100x: Small-business payment fraud and security tooling in the US is a $1-10B budget line, and the mechanism is a real network: warning value scales with how many members share a vendor, so the largest network is strictly the most useful and a second network is worth less per member. That produces winner-takes-most economics in a segment normally condemned to fragmented resellers.
Ceiling: SMBs treat this as a $99 nice-to-have and cancel after a quiet quarter, holding revenue per member too low to fund the verification desk.
Closest real companies, as the generator saw them: Strongkeep and Inforcer deliver single-tenant security tooling per business, so nothing one customer learns helps another. MouseCat and Incandor build fraud intelligence for banks and fintechs; Sentinet owns the small-business side of the same transaction, where the invoice is actually approved.
Main risk: Small-business churn outruns network density, and the pooled warnings never get frequent enough to be the reason anyone stays.

Five judges

Each judge scores every idea in the catalog with a named rubric; the venture judge decides whether a card is shown at all (4-5 is venture-grade).

Venture investor
4/5
Pooled fraud signal is a real compounding network where the largest graph is strictly most useful, though $99-399 per month ACV limits how big the outcome gets.
Bootstrapper
5/5
$99-$399 self-serve to HVAC and construction suppliers who already lose money to invoice fraud, live in an afternoon, revenue within a year.
Operator
4/5
Invoice and vendor-change fraud is frequent and expensive, the SMB owner controls the budget, and it plugs into the existing mailbox and accounting stack.
Technologist
4/5
The pooled vendor-fraud graph compounds with every confirmed invoice, and mailbox-plus-bank-feed plumbing across 50 trade suppliers is buildable today, not a wrapper.
Risk
4/5
Self-serve $99-$399 across many independent SMBs means no key-customer concentration, though the mailbox, accounting and bank-feed connections are borrowed pipes.
trends
3/5
The SBA cybersecurity program closing 2026-09-04 adds the secondary grant point to Inforcer's raise, but pooled fraud warnings were buildable in 2023.

Similar startups in the directory

Companies whose pitch matches most of the idea's terms (shared-defense, firms, member, confirmed, fraud, connects, afternoon, smb): 2 all-time, 1 from the last two years. Same matching as Idea Check.

FLX Networksplugandplay PnP 2025 · 2025 · Fintechalive
FLX Networks is a B2B community modernizing and simplifying the engagement experience between asset management and wealth management
Affinitypear · B2B SaaSalive
The CRM for private capital

Run this as an Idea Check →

The generator's reference companies

Real companies the model named as closest when it wrote the card, with their fate. A check mark is a company the radar could verify in its directory.

Public money in this direction

US federal grants, SBIR/STTR awards and open opportunities from the radar's public-money feed, matched to the idea's terms; the sector totals give the context.

grants and programs matching the idea

startup-relevant grants in Security and compliance

$41M

awarded in the sector, tracked

opportunities open now in the sector

All public money by sector →

Market signal

What the radar sees in Security and compliance: new companies by cohort year, the forming YC batch, and outcomes since the February snapshot.

Security and compliance · 43 → 45 → 83 → 74 → 47 new companies 2022 → 2026 · 94% aliveYC F26 live: 5 in this cluster, 4% of the batch (was 3% in S26)Since February, of 171 YC companies here: 2 acquired, 2 shut down, 27 rewrote their pitch

Security and compliance: companies, trend and grants →

Design attributes

The card is one cell of a designed set: every axis below was chosen before the text was written, and the text had to realize it.

Buyer: Small business
Business model: AI agent as a service
Path to 100x: Network effects, winner takes most
Market size: $1-10B market
Capital intensity: Capital-medium (ops, field teams)
Speed to revenue: Revenue within a year
Technical depth: Real engineering
Go-to-market: Self-serve
Moat: Network effects
Geography: US first
Regulation: Some regulation
Vibe: Boring business