JHT ALL-STAR
Katie Paxton-Fear

She used to make APIs, and now she breaks them! Dr. Katie Paxton-Fear is an API hacking expert, an educator through her InsiderPhD YouTube channel and Security Advocate at Semgrep. She has worked to help secure the world’s largest applications, and now she’ll show you, too! She combines deep technical knowledge and expertise with a bit of British humour and just a sprinkling of motivational pep talk to turn hacking into something anyone can do. Her training combines her experience as a university lecturer, security researcher and YouTuber into engaging, hands on, structured training that supports you as you grow in your cyber security career.
$100Courses & PathsAPI HackingAPI hacking expert, Dr. Katie Paxton-Fear AKA InsiderPhD, takes you far beyond her Free Upskill Challenges on the basics of APIs to be your personal guide on learning the hands-on skills needed in today's competitive jobKatie Paxton-Fear · Oct 1, 2025 · 10–15 CPE
FREEFree Upskill ChallengesUC – WebSocketsIn a previous Upskill Challenge, Katie Paxton-Fear took less than 30 minutes to introduce you to the basics of APIs and the most common API types you’ll see on the web including GraphQL, RESTful, gRPC, SOAP and WebSocketKatie Paxton-Fear · Mar 20, 2025 · 0.5 CPE
FREEFree Upskill ChallengesUC – GraphQLIn a previous Upskill Challenge, Katie Paxton-Fear took less than 30 minutes to introduce you to the basics of APIs and the most common API types you’ll see on the web including GraphQL, RESTful, gRPC, SOAP and web sockeKatie Paxton-Fear · Nov 4, 2024 · 0.5 CPE
FREEFree Upskill ChallengesUC – RESTful APIsIn a previous Free Upskill Challenge, Katie Paxton-Fear took less than 30 minutes to introduce you to the basics of APIs and the most common API types you’ll see on the web including GraphQL, RESTful, gRPC, SOAP and web Katie Paxton-Fear · Jun 20, 2024 · 0.5 CPE
FREEFree Upskill ChallengesUC – APIsAPIs are widely used to enable developers to write efficient code in a timely manner that meets specifications, but there are lots of different types of APIs and each solves different problems. This UC will introduce youKatie Paxton-Fear · Jun 20, 2024 · 0.5 CPE