Phillip Hallam-Baker is a computer scientist, mostly known for contributions to Internet security, since the design of HTTP at CERN in 1992.
Self-employed since 2018 as a consultant and expert witness in court cases, he previously worked at Comodo, Verisign, and the MIT Artificial Intelligence Laboratory.
[1] He is a frequent participant in IETF meetings and discussions, and has written a number of RFCs.
He introduced the misspelling of referrer in the original proposal to incorporate the "Referer" header field into the HTTP specification.
In 2007 he authored the dotCrime Manifesto: How to Stop Internet Crime;[2] Ron Rivest used it as a source of project ideas for his course on Computer and Network Security at MIT in 2013.