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Dan Guido
11.1K posts
user avatar
Dan Guido
@dguido
CEO @trailofbits, organizer @EmpireHacking
Miami, FL
illusivedan.com
Joined April 2008
1,259
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  • Pinned
    user avatar
    Dan Guido
    @dguido
    Jun 10
    I started blogging again! Short posts while I get my writing muscles strong again. Here's one about a scholarship program for hackers that I started at my high school (@mineolahs):
    The Hacker Spirit Scholarship, 2026 — Dan Guido
    The Hacker Spirit Scholarship, 2026 — Dan Guido
    From illusivedan.com
    3.7K
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    My scooter was stolen last week. Unknown to the thief, I hid two Airtags inside it. I was able to use the Apple Find My network and UWB direction finding to recover the scooter today. Here’s how it all went down:
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    3) Act quickly, before the anti-stalking feature kicks in. Damage done to my handlebars was likely in response to the regular noises from the Airtag. 4) Limit your in-person interactions and always involve the police. Don’t try to retrieve your stolen goods until you have backup.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    Here are a few lessons learned if you’re using Airtags for theft recovery: 1) Use an Airtag adhesive that blends in and muffles noise. It’s clear my thief was looking for them. 2) Do not turn on Lost Mode. It immediately alerts the thief they’re being tracked.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    I filled out a report at the precinct, and my two patrolmen get a parade of high fives from their peers. No one can remember the last time they solved an e-bike crime! I teach them all how to use Airtags, then hop in a Lyft home. @NinebotGlobal agrees to RMA the scooter ♥️.
  • user avatar
    Dan Guido
    @dguido
    Feb 27, 2022
    Tired: Don’t invade Russia in winter Wired: Don’t start an information war with a very online comedian
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    I immediately encountered resistance: 1) go back to where it was stolen and call 911 2) that’s not our precinct 3) we can’t help you if it’s inside a residence 4) I’m not familiar with your voodoo magic^H^H^H Airtags
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    As I further inspect the scooter, the cops start asking questions: Do you sell used e-bikes? Do you collect info from the seller? Do you ask they prove ownership? What is the contact info for the person who dropped this scooter off? No, No, No, and we don’t know.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    An employee inside realizes we're investigating further. He immediately becomes agitated: I should be happy I got my scooter back and leave. It’s my fault for getting it stolen. I’m screwing up his day. This isn’t how we do things in Brooklyn. More joined in.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    It’s at this point that I noticed there were cameras indoors. In hushed tones, I excitedly told the cops, “Ask for video from last Tuesday at noon.” As I walked the scooter outside, I further reiterated, “they’ll delete it if you don’t get video now.”
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    I move outside while one cop retrieves the evidence, but the most aggressive employee followed me. He says, “All you’re doing is making enemies.” Gets closer to me, and pantomimes shooting me. He implies I’d get murdered if he sees me again.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    At this point, one mechanic started making excuses for the current state of it: the woman who brought it in had complained about the brakes, so he cut the power line to the handlebars and then removed them. This is not how to repair brakes:
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    Seconds later, I walked right into it. My scooter! The employees were in disbelief: How did I know it was mine? I played sounds from an Airtag. Not good enough. I paired to it with the Ninebot iOS app. This convinced the last holdouts.
  • user avatar
    Dan Guido
    @dguido
    Aug 10, 2021
    Replying to @dguido
    I also had NYPD meet me at the nearest street corner but they were resistant to helping. They weren’t familiar with Airtags, thought I might be enlisting them to steal something, and refused to walk with me if I knocked on a door or into a store.