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About

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Hi there! My name is Matty Harris. I’m a senior in the Programming and Web Development shop at Medford Vocational Technical High School (MVTHS) in Medford, MA. I love working on different computer related projects, especially those that involve writing software. I have experience with Python, JavaScript, C, and my personal favorite, Rust. I’ve also done work in robotics and cybersecurity.

I’m especially proud of the work I did with three of my friends on hacking the MBTA CharlieCard. We reverse engineered the system of stored value on the card, and discovered a way to add as much money as we wanted without paying a dime. We responsibly disclosed this vulnerability to the MBTA, and in August, had an absolute blast delivering our talk Boston Infinite Money Glitch: Hacking Transit Cards Without Ending up In Handcuffs, in front of an audience of over 2,000 people at DEF CON 31 in Las Vegas! You can read about some of the press coverage we got in the Press section of my website.

I’m also involved with Sunk Robotics, the robotics team at MVTHS. We build underwater remotely operated vehicles (ROVs) that participate in the MATE ROV Competition. We won the New England Regional two years in a row, and competed in the World Championship in California and Colorado! I was the pilot both those years, and played a lead role in designing a custom software stack for our ROV from scratch. You can check out last year’s code here:

You can also check out the code for the all new ROV we’re designing this year here:
sunk-robotics/JONA-rov

Code for Sunk Robotics’s JONA ROV for the 2024 MATE ROV Competition.

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Feel free to contact me at with any questions, comments, or to tell me that I spelled something worng.