Viewing profile — bri3d

He gave a talk at Defcon.

Certainly not at these frequencies and corresponding high capacitance values; getting 22nF out of a PCB even with ECM would require quite a large surface area and at 220GHz you can…

A sizable percentage of datacenters use open loop water spray towers, but the alternative, forced air exchange (ie add more giant fans) uses more electricity. It’s fairly complex t…

That's not how this works, at all. Visual approach is a specific IFR procedure. It's basically designed to expedite and simplify the landing process in situations where the pilot c…

Simulink, Labview, Bosch ASCET are all pervasive in control systems engineering, especially in European automotive applications.

> It's a zero day in some caching proxy who may not have had that threat model in mind. I guess its primary purpose is caching packages, not restricting internet access. In many if…

It's "just" a restructuring; the previous setup was a really bizarre financial product where Citizens Bank gave you a 24-month 0% personal loan to buy an iPhone, but Apple would al…

It doesn't; BMW use the CCC Digital Key standard for "Digital Key Plus" and there's no Internet required post provisioning. This story really reeks of misunderstanding or "needs mo…

My experience has been that Qualcomm mobile phone chipsets don’t run Android on the modem side, but that standalone (ie laptop / USB / router) ones like this Quectel part sometimes…

I don't think I'm really conflating anything, and I don't agree with your thesis even though I agree with individual points. 1) Yes, unless you add abstraction at the ABI/ISA level…

The myth I was referring to was the overarching theme that “VLIW would have been practical if only a better compiler existed,” which I don’t believe to be true for modern or Itaniu…

These worked well for “known” intra-task pointer aliasing situations, but if you don’t know what will be in cache due to preemption of any kind, you still don’t know how many cycle…

No (sorry, I post this every time the Mythical Compiler Myth reappears), the problem with VLIW is that it fundamentally doesn’t work for anything with unpredictable memory access p…

I enjoyed seeing a throwback wololo link enough that I think maybe it should stay, but the real (linked) research is at https://github.com/mcidclan/psp-media-engine-cracking-the-un…

This is a very good text and regarded as one of the greats for a reason, but it glosses over a lot of lower concepts (like OFDM, which if I recall occupies only a single short chap…

Zoom were a very longstanding modem company who expanded into cable and routers and licensed the Motorola brand in 2016.

Vendor wise, these were never really made by a “Motorola” -this is a Zoom router (thus the domain) that used the Motorola name under license. The “old” Motorola router division Mot…

AMBA has been an open standard for a really long time, I think maybe since it was released?

It’s a completely different backend model; as far as I know alipay works just like PayPal where transactions are fully “internal” - the buyer pays Ant Group and the seller cashes o…

Right, there are two problems there: * Pilots are very concerned about life and safety and are heavily exposed to drone “incident” related anecdotes, so they err far on the side of…

Most major airports will already have a counter-UAS system, it's a huge industry. One big issue with radar is that it has the same problem pilots and human observers do: it struggl…

This is weird to me too, especially to say in the present tense in 2026. I think I get the point about "Rust culture" (although it's too vague to agree or disagree with, probably o…

It’s a huge problem. The most common approach to address it is called smearing; the duration of each second for a 24 hour period ahead of the “leap” is adjusted. For strict orderin…

Users with data caps are an obvious reason, for example, see this frustrated user report here: https://support.google.com/chrome/thread/415181794/chrome-al... . To your point about…

Just the availability wouldn't be that bad from a fingerprinting standpoint (getting one bit that a majority of Chrome users have is just the same bits you already have, usually), …