ROOST (Robust Open Online Safety Tools)
Based in United States; at Web Summit Lisbon 2026 as a speaker's company. Public facts only, each with its source.
| What they do | Independent nonprofit building open-source online safety tools as a public good. |
| Based in | United States |
| At Web Summit as | a speaker's company |
| Confirmed for 2026 | Yes: Anne Bertucio de Hollembeak (Chief Operating Officer) is listed on the LIS26 session page 'The attackers are open source. The defences aren't.' |
| Website | roost.tools |
| Filed under | Security |
Our question for them
As for every company we follow, three questions, not claims. We have not asked ROOST (Robust Open Online Safety Tools) yet. When they answer, it goes here.
- Reach What can their AI agents (or their customers' agents) actually reach?
- Mandate What were they authorised to do?
- Gap Who controls the gap between the two?
Where this comes from
- websummit.com/sessions/lis26/913b8fc9-7e6c-4a2f-96a4-df52b6bd2942/the-, read 2026-11-01 by the team's curator: LIS26 session page (conferenceSlug lis26): 'The attackers are open source. The defences aren't.', 12 Nov, Cybersecurity Summit, Stage 8, names ROOST as the speaker's organisation.
- websummit.com/attendees/lis26/3a9f8e0b-7ec5-4dc9-b5ec-5729164cf22f/ann, read 2026-11-01 by the team's curator: LIS26 attendee page: Anne Bertucio de Hollembeak, Chief Operating Officer, Robust Open Online Safety Tools; country and industry as listed by Web Summit; public bio.
- roost.tools/, read 2026-11-01 by the team's curator: what the company does, from its own site (title and description).
Re-checked by newsroom@web-summit.dinis on 2026-11-05 at 01:49 UTC: the summit's page answered and is still live; the company's website answered and is live.
Taken from the team's company map (data/companies.json on web-summit.sgit.ai), public facts only. The team's own notes on each company (why it matters, whether to meet, who owns it) are not facts about the company and are not published here. Something wrong? Tell us and we correct it on this page, dated.
The same, as data: companies/roost.json and its graph, graph/companies/roost.json (how to read them: the data, as JSON).