Dan Guido
Co-Founder CEO at Various
New York, New York, United States
Summary
🤩
RockstarDan Guido is the co-founder and CEO of Trail of Bits, a New York–based cybersecurity research firm he has grown since 2012 into a 100+ engineer organization that combines offensive mindsets with academic rigor to secure cryptography, AI, and blockchain systems (Trail of Bits was a DARPA Cyber Grand Challenge finalist). He spun out iVerify in 2023 to fight mobile spyware, authored the popular AlgoVPN open-source project (28k+ GitHub stars), and helped publish the widely used CTF Field Guide. A frequent advisor and board member to startups and an angel investor across security, crypto, and healthcare, he also shapes policy through collaborations with CFR, RAND, and Harvard and served on CFTC advisory committees. Beyond company building, he helped launch NYU’s cybersecurity program, taught 300+ students, and founded Empire Hacking to connect over 1,700 NYC security professionals, reflecting a long-term commitment to talent development in the field.
13 years of coding experience
1 year of employment as a software developer
Stackoverflow
1,721reputation
120kreached
2answers
6questions
urllib2
top-5%
Github Skills (34)
ctf10
vpn10
vulnerability10
ipsec10
configuration-management10
keyv10
firewall10
c-programming10
c1110
iptables10
c1710
security-vulnerability10
ansible10
ansible-galaxy10
network-security10
Programming languages (19)
Github contributions (5)
trailofbits/ctf
May 2014 - Dec 2017
CTF Field Guide
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:53 commits, 19 PRs, 24 pushes in 3 years 7 months
Contributions summary:Dan appears to be involved in a CTF (Capture the Flag) challenge related to network security. They have provided an initial commit and subsequently made changes to a C program designed to simulate a vulnerable network service. The changes include adding and modifying code, specifically related to authentication, and implementing actions such as adding a user, reading and writing articles, and executing commands. The user's modifications and inclusion of security-focused elements, suggests involvement in the discovery and exploitation of vulnerabilities.
ctffieldfield-guidesecurity-ctf
trailofbits/algo
May 2016 - Oct 2021
Set up a personal VPN in the cloud
Role in this project:DevOps Engineer
DevOps EngineerContributions:215 commits, 240 PRs, 422 pushes in 5 years 5 months
Contributions summary:Dan primarily focused on configuring and maintaining the VPN setup, including modifying the `ipsec.conf` and `sshd_config` files. They addressed issues and made improvements to the iptables rules (firewall) and integrated features like URL probes for Apple profiles, showing a deep understanding of the infrastructure. The user also focused on security enhancements by disabling DPD and preferring the Ed25519 key.
vpn-clientsecurityansibleikev2strongswan
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