Forgot your password?
typodupeerror

Comment Re:AES crypto attacks (Score 1) 24

The best AES crypto attacks were on reduced-round versions. Good thing reduced-round versions aren't deployed. But these attacks might lead to research on attacks on full-round versions of AES, which would be concerning. There's no knowing if these attacks actually exist, but they aren't proven not to exist. AES just happens to be battle-tested very well.

Or perhaps that's why the number of rounds of AES is chosen to be what it is - because each round of AES scrambles and shuffles the bits. Doing fewer rounds means the shuffling might be insufficient and thus you can start deriving information from it.

It's just like why you can shuffle a deck of cards just 7 times using the riffle shuffle to ensure it's sufficiently shuffled. Fewer shuffles don't work, and more shuffles doesn't improve randomness.

That would be nice, but no, at least not unless NSA or similar has some non-public knowledge that enables them to model the confusion and diffusion precisely enough to estimate bounds. That's not impossible, but it doesn't seem very likely.

According to NIST and the AES designers, the round count was selected by breaking reduced-round variants and then choosing a high enough round count to provide a "safety margin". How much safety margin was needed was a subject of much debate, and there was some criticism that AES's margin wasn't large enough. AES-128's 10 rounds give about a 30% safety margin, and AES-256's 14 rounds give about a 40% margin. The article doesn't say what the "weakened" variant here was, so we don't know if those margins have been eroded.

Comment Re:And? (Score 2) 37

The most sophisticated hacks link together several small vulnerabilities before they ultimately break security. Just because it cannot be exploited on it's own doesn't mean it cannot be used as part of an exploit chain.

Yeah, I think what we're seeing here is that attackers are resource-constrained, and that the hard part of creating an exploit isn't finding the vulns (there are tons of them), but figuring out how to turn the vulns into a working exploit chain. Merely having more fodder for crafting exploit chains doesn't necessarily make them easier to build... and keep in mind that the vast majority of attackers are glorified script kiddies. So the small number of really capable black hats may not have seen much benefit from AI yet. Probably not none but not enough to make a measurable difference.

If this theory is correct, when AI gets good at piecing together robust exploit chains, then we'll see the explosion in attacks, because all those glorified script kiddies will be able to get high-quality exploit chains cheaply and easily.

Note that none of this is applicable to nation-state attackers. They have plenty of smart, capable people, and plenty of money to buy chains. They weren't resource constrained before AI, and aren't now either. But they don't generally engage in mass attacks, so they don't register in the statistics.

Comment Re:Likely-erroneous assumptions (Score 1) 121

" it was just because the capital investment required was massive and the payback didn't come as fast as the financial structures built to fund the construction required."

The real problem was that much of the financial structure was bogus, propped up by government shenanigans around the financial instruments rather than addressing the industry that the instruments supposedly represented. The required payback was never going to be possible.

The *useful* assets were snapped up, but a lot of it was garbage.

Interesting! I've never read about that. I know a lot of the value was tied up in the adjacent land grants which represented incredible value eventually, but was nearly worthless in the short term.

What kinds of government shenanigans?

Comment Re:Likely-erroneous assumptions (Score 1) 121

But it's also very possible that they're going to miss the boat. Not completely, of course, but somewhat like Microsoft missed the boat on the Internet.

So...Microsoft certainly didn't get the massive market share AOL had in the 90's, and they weren't too successful at getting the "walled garden" they were probably hoping for around that time...but they did just fine.

No, they didn't. You're judging based on a successful recovery they made in the subsequent 30 years. They really missed the boat, and lost the lock they once had on computing in general. Those who didn't live through it don't realize how Windows was synonymous with "computing". MS had the only real consumer computing platform (Apple existed but it was noise, relegated to a particular niche and lots of people with Macs had to have a PC, also). The web fundamentally changed that.

Comment Re:Very few of these are in America (Score 1) 104

If you pay attention you're going to notice most of these aren't American.

Abi Platock is in NYC. Your point about healthcare coverage makes logical sense, but I'm not sure it holds, statistically. Some of it may be that most influencers are very young, and you can stay on your parents' insurance until you're 26 (Platock is 25... so check to see if she's still doing this next year, and the year after).

Comment Likely-erroneous assumptions (Score 4, Interesting) 121

This whole article is based on the suppositions that (a) the AI bubble is going to burst and (b) it's going to take down Apple's competitors. I don't think that's a likely sequence of events.

I do think we're in something of an AI bubble, and that it will burst... but it won't burst in the sense of "All this AI stuff will go away and no one will need data centers", it will burst in the same sense that the dotcom bubble burst, or the railroad bubble burst. What happened in those cases wasn't anything remotely like "and the hyped technology became unimportant".

I think the railroad analogy is the most interesting because while a lot of railroads went under and a lot of railroad investors lost their shirts, it wasn't because railroads -- especially trans-continental railroads -- were just as huge a game-changer as everyone thought they were, it was just because the capital investment required was massive and the payback didn't come as fast as the financial structures built to fund the construction required. What happened was that those with the money snapped up the failing railroad assets and made a lot of money as the massive economic growth unleashed by the railroads was realized, over the course of a few decades.

Similarly, the dotcom bust famously left a lot of "dark fiber" laying around... but all of that fiber got lit up within a handful of years, plus we've added a ton more.

AI is looking like it will follow a similar path. It absolutely is a revolutionary technology, it will upend the structure of our economy -- even more than railroads did -- and there is a lot of money to be made. And even if AI gets much more efficient and doesn't need all of those data centers, they're still going to get used. The problem is just that some of the early investors pushed so hard trying to out-grow the competition that they've built some unsustainable financial structures, and there's a good chance that AI won't generate payback fast enough to keep those cards from tumbling down.

This probably won't be because AI doesn't advance fast enough, but because it takes time to figure out how to integrate any new technology, to make the business and even social adaptations to make use of it. I suspect those things will happen far faster then they ever have for such a large shift, because AI will actually help to accelerate them, but they still probably won't happen fast enough.

OpenAI has the most exposure. Anthropic has done a better job of figuring out how to monetize AI and is a little less exposed, though still quite exposed. I don't think Google, Amazon or Microsoft have significant exposure, mostly because they all have very large non-AI revenue streams and large piles of cash, both of which can help them survive heavy investment. For example, although Google did post its first quarterly net loss in forever, thanks to heavy data center investment, it was only a $6B loss, and for a company that would otherwise be generating $80B per quarter in net profits and has a $130B cash warchest, that's nothing.

As for Apple? Well, Apple might be able to sit cagily on the sidelines, waiting for the crash so it can use its pile of cash to snap up the assets and buy in. But it's also very possible that they're going to miss the boat. Not completely, of course, but somewhat like Microsoft missed the boat on the Internet. I do agree that really making something like the Vision Pro work really well would be huge.

Comment Re:Why is this newsworthy? (Score 4, Interesting) 30

Nothing in the summary really conveys why this raises to the level of news. Digging in it doesn't really have consequences for the users in the short term.

Plausibly a good change, but a change among countless other good changes that pass without notice.

I dunno. Given all the non-nerd news that shows up here, it's refreshing to see something more deeply technical, even if most of use who don't spend a lot of time thinking about VMs in Linux aren't directly affected.

I'd be fine with a bit more coverage of possibly-interesting kernel changes. I mean, /. shouldn't cover all of them; we have LWN for that. But picking the occasional random change of significance to highlight is worthwhile. Maybe one per week or something.

Comment Re:Thinning wouldn't be a full solution but (Score 1) 107

I have no idea what I'm talking about, but it would be climate irony if the mitigation to Canadian wild fires was to build roads through the forests as a sort of fire break (obviously you don't need to drive on the roads, but you'd cut the trees and clean up the ground as if you were making a road).

Typical roads are not effective firebreaks in dense, tall forests. The general rule is that you need 1.5X (minimum) to 3X the height of the surrounding vegetation. In a forest with 100-foot trees that means you need firebreaks 300 feet wide. In areas that are sloped or often windy, the width needs to be increased.

Comment Re:That's not the worst part (Score 1) 61

Not sure what exactly they convinced you of, but it apparently means you ended up on the wrong side in gweihir's mind, so tread carefully. Or just ignore the guy. Either way, been there, done that,...

My guess is he read the first half of the first sentence of my response and concluded that I was just repeating what Google says about the issue, that I mindlessly believed the company line.

Never mind that I personally designed and implemented the feature, so if there's any official Google PR on the issue, it's based on what I told "them", not what "they" told me.

Thank you for you explanations and the good work to make Android secure.

Thanks. There were good reasons to move on from Android, but it was pretty cool being able to work to improve the world's most-used operating system. Relatively small impacts get multiplied by a big number.

Comment Re:Good for him! (Score 1) 217

'...agents are "authorized to make such search or seizure"...'

How can they be authorized when they are not on US soil? Who authorizes them?

Atlanta, GA isn't US soil?

But even if this were one of the overseas CBP checkpoints (the ones that do pre-clearance, so you don't have to go through CBP after landing), I think those are considered US soil as well, under an agreement with the host nation.

Slashdot Top Deals

Nothing makes a person more productive than the last minute.

Working...