Ian Carroll

I'm the founder of Seats.aero, a site for discovering flights with points and miles. Outside of work, I do security research on bug bounties, transportation, and other interesting areas.

Popular posts: 5
Total points: 3,348
HN comments: 853
Rank: #417 personal

Visit ian.sh → On Hacker News Aug 2021 – Oct 2025

Security & Privacy 5 Networking & Internet 2

Most points Most discussed Most cited Newest

MarkMonitor left 60k domains for the taking

2021420 points99 comments Security & Privacy details

Thanks to Nagli and d0xing for helping figure out what was happening with this issue.

Security concerns with the e-Tugra certificate authority

2022159 points94 comments Security & Privacy details

Certificate authorities (CAs) are a critical backbone of internet security; when they are compromised, users lose the ability to securely connect to websites without fear of interception. Websites cannot insulate themselves against a fully-compromised CA, even if they normally use other CAs.