CV & Resume

Rafael Ortiz

For a detailed PDF copy of my CV please contact me at [email protected].

Education

MS Cybersecurity, 4.0, with Honors
Johns Hopkins University
05/2018 - 08/2022

BS Biomedical Engineering, Highest Honors
Georgia Tech
08/2011 - 05/2015

Experience

Current

Senior Linux Threat Researcher @ Sophos
08/2022 - ongoing

Past

Senior Security Researcher @ Red Canary
05/2021 - 07/2022

Security Researcher @ ElevenPaths Buenos Aires Lab
10/2017 - 05/2021

Cybersecurity Presales @ Telefonica Tech Cybersecurity
01/2021 - 05/2021

Cybersecurity Specialist @ Telefonica USA
02/2017 - 12/2020

Owner @ Poolsloth VRM Cryptocurrency Mining Pool
08/2017 - 05/2019

VOIP Network, System & Security Admin @ Specialty Telehealth Services
07/2015 - 02/2017

Telemedicine Communications Specialist @ Specialty Telehealth Services
06/2015 - 07/2015

Biomedical Engineering intern @ Skeletal Dynamics
06/2015 - 07/2015

Cofounder @ PillboxTV
02/2015 - 07/2015

Undergraduate Research Assistant @ Botchwey Lab, Georgia Tech
01/2013 - 02/2015

Other

Top Languages

Here are the top five languages I use by hours, as recorded by ActivityWatch on a monthly basis.

Month	1	2	3	4	5
April 2021	Rust	Python	C	Shell Script	JavaScript
March 2021	Rust	JavaScript	Java	Go	Python
February 2021	Python	Rust	Shell Script	Java	JavaScript
January 2021	Go	Java	TypeScript	Python	Shell Script
December 2020	Rust	Go	Python	JavaScript	Java
November 2020	Java	Go	TypeScript	C	Python
October 2020	Java	TypeScript	Shell Script	Go	Python

My new employer is less than thrilled to allow ActivityWatch on corporate machines, so the information stops at April. I do have some GitHub stats, but keep in mind these only use publicly available information.

Conferences & Speaking

(2022) every Boring Problem Found in eBPF, Way West Hackin' Fest (5-8 May)
    https://wildwesthackinfest.com/way-west/speakers-2022/
(2022) oxidebpf Toolshed Demo, Way West Hackin' Fest (5-8 May)
    https://wildwesthackinfest.com/way-west/speakers-2022/
(2019) High assurance digital assets and identities for humans and machines:
    building a trustworthy blockchain, Florida Blockchain Foundation Supply 
    Chain Digital Transformation Session 2: Blockchain Technology for Air Travel
    and Innovative concepts (2 July) 
    https://fbf2019.angage.events/editablepage/view/411
(2019) Blockchain in a real business, Florida Blockchain Foundation Digital 
    Transformation Session 1: Blockchain 101 (28 May)
    https://www.floridablockchainfoundation.org/events-1/supplychainworkshops
(2018) Breaking out HSTS (and HPKP) on Firefox and Chrome, Hack Miami 6 (19 May)
    https://web.archive.org/web/20180530170414/https://www.hackmiami.com/speakers-hackmiami-conference-6

Other Stuff I’ve Done

• CryptoClipWatcher, a Windows utility to defend against clipboard hijacking malware. Written in C#.
• ChainLock, a Linux and Android tool to protect sensitive files. Desktop application written in C and Python, with extensions. Mobile application written in Java. The project stands up a Tor hidden service to communicate. Ask me about it sometime, it’s a fun one.
• oxidebpf, a Rust library for managing BPF programs.
• redcanary-ebpf-sensor, a suite of eBPF programs for gathering security telemetry.

Other Places I’ve Written

• How to Make API REST Requests to Tor Hidden Services in an Android APK
• ChainLock, A Linux Tool for Locking Down Important Files
• Introducing oxidebpf: an open source Linux tool for Rust and eBPF developers
• eBPF for Security: a Beginner’s Guide
• every Boring Problem Found in eBPF

Patents

(2018) Methods and Systems for Multiple Independent Roots of Trust, 
    US 62/729,916 filed 11 September 2018. Patent Pending.

Papers

(2017) Sphingosine-1-Phosphate Receptor-3 Supports Hematopoietic Stem and 
    Progenitor Cell Residence Within the Bone Marrow Niche. Stem Cells, 35: 
    1040–1052. doi:10.1002/stem.2556

Posters & Abstracts

(2014) S1P receptor signaling coordinates shifting chemotactic gradients during
    hematopoietic stem cell mobilization. Hilton Head Regenerative Medicine 
    Workshop. March 2014

(2014) Coordinating hematopoietic stem cell trafficking through Sphingosine-1-
    phosphate receptor signals. Atlanta, GA: Immunoengineering Seminar. May 2014

(2014) Investigating sphingolipid-chemokine cross-talk during microvascular 
    remodeling using novel heparin hydrogels. Monterey, CA: North American 
    Vascular Biology Organization, Vascular Biology 2014

(2014) Sphingosine-1-phosphate receptor signaling is sufficient to mobilize 
    hematopoietic stem cells to peripheral blood. Southeastern regional lipid 
    conference, Cashiers, NC

(2014) Investigating sphingolipid-chemokine cross-talk during microvascular 
    remodeling using novel heparin hydrogels. Southeastern regional lipid 
    conference, Cashiers, NC.

(2014) Hematopoietic stem cell migratory activity is enhanced by Sphingosine-1-
    phosphate receptor 3 antagonism. Petit Scholarship poster session, Parker H.
    Petit Institute for Bioengineering and Bioscience.