Theo de Raadt
E52337
Theo de Raadt is a Canadian software engineer best known as the founder and leader of the OpenBSD and OpenSSH projects, and as a prominent advocate for free and secure software.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Theo de Raadt canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T400578 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Theo de Raadt Context triple: [Award for the Advancement of Free Software, notableRecipient, Theo de Raadt]
-
A.
Alan Emtage
Alan Emtage is a computer scientist best known for creating Archie, the first widely used Internet search engine, which laid foundational groundwork for modern web search.
-
B.
Eric Raymond
Eric Raymond is an American software developer, open-source advocate, and author best known for his influential essay collection "The Cathedral and the Bazaar," which helped popularize and legitimize the open-source software movement.
-
C.
Greg Kroah-Hartman
Greg Kroah-Hartman is a prominent Linux kernel developer best known as the long-time maintainer of the stable kernel branch and a key figure in the kernel community.
-
D.
Linus Torvalds
Linus Torvalds is a Finnish-American software engineer best known as the creator and principal developer of the Linux kernel, the core of the widely used Linux operating system.
-
E.
Tobias Nipkow
Tobias Nipkow is a German computer scientist known for his influential work in interactive theorem proving and formal verification, particularly through his contributions to the Isabelle proof assistant.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Theo de Raadt Target entity description: Theo de Raadt is a Canadian software engineer best known as the founder and leader of the OpenBSD and OpenSSH projects, and as a prominent advocate for free and secure software.
-
A.
Alan Emtage
Alan Emtage is a computer scientist best known for creating Archie, the first widely used Internet search engine, which laid foundational groundwork for modern web search.
-
B.
Eric Raymond
Eric Raymond is an American software developer, open-source advocate, and author best known for his influential essay collection "The Cathedral and the Bazaar," which helped popularize and legitimize the open-source software movement.
-
C.
Greg Kroah-Hartman
Greg Kroah-Hartman is a prominent Linux kernel developer best known as the long-time maintainer of the stable kernel branch and a key figure in the kernel community.
-
D.
Linus Torvalds
Linus Torvalds is a Finnish-American software engineer best known as the creator and principal developer of the Linux kernel, the core of the widely used Linux operating system.
-
E.
Tobias Nipkow
Tobias Nipkow is a German computer scientist known for his influential work in interactive theorem proving and formal verification, particularly through his contributions to the Isabelle proof assistant.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
computer programmer
ⓘ
free software advocate ⓘ project leader ⓘ security advocate ⓘ software engineer ⓘ |
| advocates |
open documentation of hardware
ⓘ
secure-by-default software configurations ⓘ strong cryptography in open software ⓘ |
| associatedWith |
BSD
ⓘ
surface form:
Berkeley Software Distribution
Unix-like operating systems ⓘ |
| basedIn | Calgary ⓘ |
| countryOfCitizenship | Canada ⓘ |
| familyName | de Raadt ⓘ |
| fieldOfWork |
computer security
ⓘ
free software ⓘ network security ⓘ operating systems ⓘ |
| givenName | Theo ⓘ |
| knownFor |
advocacy of free software
ⓘ
advocacy of secure software ⓘ founding the OpenBSD project ⓘ founding the OpenSSH project ⓘ leadership of the OpenSSH project ⓘ leading the OpenBSD project ⓘ |
| memberOf |
OpenBSD
ⓘ
surface form:
OpenBSD project
OpenBSD ⓘ
surface form:
OpenSSH project
|
| movement |
free software movement
ⓘ
open-source software movement ⓘ |
| name | Theo de Raadt self-link ⓘ |
| notableIdea |
code auditing for security
ⓘ
proactive security in operating system design ⓘ |
| notableWork |
LibreSSL
ⓘ
OpenBGPD ⓘ OpenBSD ⓘ OpenBSD ⓘ
surface form:
OpenNTPD
OpenSSH ⓘ |
| occupation |
operating system developer
ⓘ
programmer ⓘ project leader ⓘ software engineer ⓘ |
| operatingSystemDeveloped |
NetBSD
ⓘ
OpenBSD ⓘ |
| positionHeld |
founder of OpenBSD
ⓘ
founder of OpenSSH ⓘ project leader of OpenBSD ⓘ |
| programmingLanguage |
C
ⓘ
Unix shell ⓘ |
| website | https://www.openbsd.org ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Theo de Raadt Description of subject: Theo de Raadt is a Canadian software engineer best known as the founder and leader of the OpenBSD and OpenSSH projects, and as a prominent advocate for free and secure software.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.