ROOST (Robust Open Online Safety Tools)

On the Web Summit 2026 company map. Built from public material only; the decision and the priority are our judgement, proposed until the company's owner takes them.

What they do	Independent nonprofit building open-source online safety tools as a public good.
Website	https://roost.tools/
Category	security
Country	United States
Attending 2026	confirmed: Anne Bertucio de Hollembeak (Chief Operating Officer) is listed on the LIS26 session page 'The attackers are open source. The defences aren't.'
Attending as	speaker's company
Why it matters to us	story: 'The attackers are open source. The defences aren't.' matches our open, git-based approach; possible partner for open safety tooling
Decision (proposed)	write-about
Priority	2
Owner on our team	to decide
Status	to contact

On the graph

In Agent governance and AI security.

speaks-at The attackers are open source. The defences aren't. 2026-11-12: COO speaks on open-source defences source
could-partner SHarness: open-source safety tooling next to our open harness (our judgement) (our judgement)
relevant-to The SGit newsroom: open defences against open-source attackers: a story (our judgement) (our judgement)

Assets made for them

None yet.

Sources

websummit.com/sessions/lis26/913b8fc9-7e6c-4a2f-96a4-df52b6bd2942/the-, read 2026-11-01: 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: 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: what the company does, from its own site (title and description)

The company map