[Swordmaker]

Word of warning. . . Fitbit wearables can be hacked in just 10 seconds and then carry malware to the computers they link to by Bluetooth connections. This is not a good development. — PING!

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Fitbit Security 10 Second Hacking
Warning Ping!

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[nickcarraway]

But what can you do if you hack a Fitbit? Make people think the only walked 2000 steps, when they really walked 4000?

[Blue Jays]

A good reason to keep a Fitbit device in a pocket rather than plainly visible.
One would think the hacker must be in close proximity to take advantage of the vulnerability.

[palmer]

Through this [bluetooth connection], a hacker could dump malware onto the wearable which would then be transferred to any computer the Fitbit came into contact with.

There are two required steps. First to exploit a vulnerability in the fitbit to place malware on it. Second to exploit a different vulnerability on the PC or laptop to transfer other malware to it.

They don't explain the first step, and it would probably involve a complete reflash of the fitbit firware with a very low probability of success. Much more likely to produe a fitbrick. Second they have not described even the slightest notion of a suitable PC or laptop exploit via bluetooth. While I'm sure something is possible, it is not going to be very general or easy to engineer. Most likely these researchers have no idea how they would hop from the fitbit onto an arbitrary chosen host OS. Left that as an exercise.

[conservatism_IS_compassion]

"potentially wrecking havoc”

“I don’t think that word means what you think it means.”

wreck :

the destruction of, esp. a ship at sea. (noun)

wreak :

cause (a large amount of damage). (verb)

</spelling/grammar nazi mode>