You asked about Trust & Safety
28 people built something like it. 3 are gone.
That is 12% of the ones whose fate we could settle, against 23% across the whole register. 2 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | YCCinder Infrastructure to protect companies from AI abuse · cinder.ai | still up |
| 2023-06-01 | AI agents for risk, compliance, and safety · safetykit.com | still up |
| 2011-06-01 | YCSift The Leader in Digital Trust & Safety · sift.com | still up |
| 2017-06-01 | The first public safety operating system that eliminates crime. · flocksafety.com | still up |
| 2019-06-01 | Building the safety net of the future · pairteam.com | still up |
| 2018-01-01 | Health insurance for remote teams · safetywing.com | still up |
| 2020-06-01 | YCSafeBase Trust Center platform that scales customer security reviews · safebase.io | acquired |
| 2018-01-01 | YCAnjuna Anjuna enabled organizations to trust any infrastructure · anjuna.io | still up |
| 2020-06-01 | YCNotabene The Notabene platform is the trust layer for global money movement. · notabene.id | still up |
| 2022-06-01 | YCnsave Trusted $€£ accounts abroad for people from unstable economies. · nsave.com | still up |
| 2026-01-01 | Security builds trust. Strengthen both, all on one platform. · parameter.ai | still up |
| 2015-01-01 | YCLabdoor Labdoor is building the trusted online drugstore. · labdoor.com | still up |
| 2016-01-01 | YCCarbic using ultrasonics + ml to analyze fluid behavior at infrastructure… · carbic.com | still up |
| 2025-09-01 | YCSava Building the future of trusts · savahq.com | still up |
| 2018-06-01 | YCDinesafe We crowdsource food safety reports & detect and prevent outbreaks. · dinesafe.org | still up |
| 2023-06-01 | Search engine for trustworthy medical information. · medisearch.io | still up |
| 2022-01-01 | YCTrusty Limitless Real Estate · trustyhomes.com | still up |
| 2019-01-01 | Safety & quality software for industrial sectors. · workclout.com | acquired |
| 2025-09-01 | Zero-trust authentication, authorization, and auditing for AI agents · multifactor.com | still up |
| 2021-06-01 | Computer vision that makes the industrial workplace, safer · protex.ai | still up |
| 2024-01-01 | Deploy trustworthy data agent that know your business · upsolve.ai | still up |
| 2023-01-01 | YCPier Stripe for Credit - Trusted Credit Compliance Partner · pier-finance.com | still up |
| 2022-01-01 | YCFirezone Easiest way to set up Zero Trust Access for your team · firezone.dev | still up |
| 2022-06-01 | YCMidplane The safety layer between AI agents and your database · midplane.ai | still up |
| 2024-01-01 | Helping Companies Deploy Email Agents in High Trust Domains · breezlabs.com | still up |
| 2011-01-01 | YCTrustEgg Trust funds. · fidoosh.com | gone |
| 2019-06-01 | Blockstamp is an asset management software for industrial equipment · blockstampsf.com | gone |
| 2016-06-01 | Get care at home for mom or dad from trusted professionals in their… · getsagecare.com | gone |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.