Auracast, the new Bluetooth LE Broadcast Audio feature has gained some publicity
in the past months. The Bluetooth SIG has introduced the LE Audio feature-set to
the Bluetooth 5.2 Specification in 2019 and vendors are only now starting to
implement it. Auracast facilitates broadcasting audio over Bluetooth LE to a
potentially unlimited number of devices. It does not require pairing or
interaction between the sender and the receivers.
We also presented this topic
at 38c3.
This blog post will contain similar contents albeit with some more details.
Puh…it’s been a long time since my last post, huh?
However, let’s get straight back to topic. Today, I want to issue a warning, especially in face of upcoming Troopers 2017 (less than two days to go, wooo! 10th anniversary!): be careful when using wireless equipment (presenters, mouses, keyboards,…), especially during Troopers, but also in daily use.
TL;DR Please take into account that you put your laptop at risk of being hacked by using wireless equipment during Troopers. This could lead to a full system compromise. Wirelessly. Attacks like keystroke injection or sniffing of latter and mouse movements are possible. This, e.g. applies to speakers, using wireless presenters (like Logitech R400/R800, old and new models), as also to any attendee or crew member who might use wireless mouses or keyboards. Be aware of this!