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timbre1234 commented on Who killed the rave?   ft.com/content/2138e940-0... · Posted by u/this_weekend
timbre1234 · 8 months ago
What's missing is GenZ isn't into it. The kids are the ones that go out all the time and they drive a lot of the revenue that big clubs need to stay alive. I'm not really sure what GenZ is into instead -- would've been cool if this article had tried asking them.
timbre1234 commented on GhostStripe attack haunts self-driving cars by making them ignore road signs   theregister.com/2024/05/1... · Posted by u/curmudgeon22
mhb · a year ago
So change the cameras to global shutter?
timbre1234 · a year ago
Yeah, came to ask this. Aren't global shutters becoming a thing? One would assume they'll be commonplace in the not-all-that-distant future, given their advantages.
timbre1234 commented on Attackers can decloak routing-based VPNs   leviathansecurity.com/blo... · Posted by u/dsr_
tgsovlerkhgsel · a year ago
The PoC section doesn't explain the issue. I think a one-line TL;DR similar to the summary above would be best, e.g. "A malicious DHCP server can use DHCP Option 121 to set routing rules, which can override the routing rule used by VPNs and cause traffic to be routed outside the VPN"

(I like it that you provide the background for people who need it, but also found the actually relevant information extremely annoying to find.)

timbre1234 · a year ago
Or they could have maybe lead with that sentence and THEN given the explanation.

Too many tech people have that "I want to slowly lead you to the point like Sherlock Holmes mystery" style of writing, and it is such a time-waste. Arthur Conan Doyle was paid by the word, you aren't. Please, everyone, back to middle school: State a Thesis in your first sentence and THEN expand on it, don't force me to spend pages trying to figure it out.

Dead Comment

timbre1234 commented on To save money on insurance, drivers agree to intrusive monitoring technology   money.com/usage-based-car... · Posted by u/mcone
parl_match · 2 years ago
> Utah views EV drivers as tax evaders because they don't buy gas

That's because they kind of are. Road taxes are often use-based, where gasoline is the way they extract "use" taxes.

EVs also wear roads more than gas cars do, on average, because of their higher weight. And it's not linear wear per pound, either.

This is going to require a significant shift about how states and cities think about their road maintenance budgets and the taxes required to sustain them. A lot of states are going to, predictably, get this wrong.

timbre1234 · 2 years ago
EV drivers more than make this up by not having nearly as many externalities (pollution) as gas drivers. Gas drivers seem to always conveniently forget those real societal costs when they're trying to talk about "fairness".
timbre1234 commented on Did Reddit just destroy mobile browser access?   reddit.com/r/help/comment... · Posted by u/xednir
c7b · 2 years ago
There's something that I don't get about forcing mobile browser users into mobile apps - how does it make sense for the company? They're forcing themselves into a walled garden, where the gardener takes a hefty "app store tax" on your revenues and has countless levers to force you to style the app how it suits their interests, not yours. For some apps, this might still be the best way to gain traction. But if have already attracted users who are obviously happy with the web experience, why on earth not keep them there? I would be expecting developers, if anything, to be nudging people in the other direction. But that's not what's happening, not just with reddit, so what am I missing here?

I get that there are some marketing benefits from having your logo on of the user's home screens (likely not the main one), and that very few users even know you can do the same thing with websites, and that in the early days there was a big feature gap between native and mobile apps. But for apps like Reddit, it seems to me like you should be able to achieve everything you could want with modern web standards, and users who use their browser a lot will probably see your logo on the "New Tabs" page anyway. So what am I missing?

timbre1234 · 2 years ago
It's 100% about being able to stop adblockers
timbre1234 commented on Had a call with Reddit to discuss pricing   old.reddit.com/r/apolloap... · Posted by u/robbiet480
timbre1234 · 2 years ago
Sigh. I really liked reddit, too. :(
timbre1234 commented on How secure is merely discarding (TRIMing) all of a SSD's blocks?   utcc.utoronto.ca/~cks/spa... · Posted by u/goranmoomin
avianlyric · 3 years ago
Didn’t know that. Don’t suppose you’ve got any links that describe the physical process that results in the correlation between write quality and erase-to-program delay?
timbre1234 · 3 years ago
Do you want research or do you want an analogy? I can give you both. On the research front:

    "An Experimental Analysis of Erase-to-Program Interference in Multi-Level Cell NAND Flash Memories" by F. X. Zhang, et al., in IEEE Transactions on Electron Devices, vol. 63, no. 4, pp. 1621-1628, April 2016.

    "Erase-to-Program Disturbance in NAND Flash Memory: Characterization, Modeling, and Mitigation Techniques" by M. H. Kim, et al., in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 25, no. 9, pp. 2381-2392, Sept. 2017.

    "A Study of Erase to Program Disturbance in 3D NAND Flash Memory" by T. Wang, et al., in IEEE Transactions on Electron Devices, vol. 64, no. 7, pp. 3153-3159, July 2017.

    "Characterization and Modeling of the Erase-to-Program Disturbance in Multi-Level Cell NAND Flash Memories" by R. Micheloni, et al., in IEEE Transactions on Electron Devices, vol. 56, no. 11, pp. 2384-2392, Nov. 2009.

timbre1234 commented on How secure is merely discarding (TRIMing) all of a SSD's blocks?   utcc.utoronto.ca/~cks/spa... · Posted by u/goranmoomin
avianlyric · 3 years ago
Somethings not mentioned in the article, but are pretty relevant.

Modern SSD controllers encrypt all data by default. Not to increase security, to improve wear levelling. Encrypted data should be effectively random data (that’s what good encryption aims to produce). So encrypting the data ensures that patterns in data written to the SSD don’t end up creating uneven wear patterns in the flash chips.

As a consequence, reading the raw data of an SDD would just produce garbage. You would need to also extract the encryption key from the SSD controller. Given this encryption isn’t meant to be secure, it’s quite possible to extracting that key is quite easy. But I believe that secure erase on SSDs is achieved by simply rotating the encryption key used for wear levelling, so maybe it’s reasonable well protected.

I would expect an SSD to quite aggressively erase TRIMed blocks where possible. Erasing a block of flash memory is about 10x slower (2ms) than writing to flash memory (200microseconds), so there’s quite a large performance hit once a drive runs out of empty blocks and needs to start erasing blocks in the write path.

Overall I suspect that simply TRIMing most SSD is secure enough for most applications. At least secure enough for anyone that even asks the question “is TRIMing secure enough”. For everyone else, you either don’t care at all, or your really care, in which case you’re using multiple layers of security such as full disk encryption, secure SSD erase, and shredding drives already.

timbre1234 · 3 years ago
The problem with this is that erase-to-program delay is a major factor in bad write quality.....you really don't want to erase a block and wait a long time before programming it. Where "long" is subjective and there are a lot of details here but the general rule is that the longer you wait after an erase to write, the less accurate your write is (colloquially, your zero decays as it sits)......so in practice while you do erase-ahead, you don't erase too far ahead of your writing and you certainly don't erase at TRIM time in most cases.
timbre1234 commented on Pure Storage Teases 300 TB Ultra-Large NVMe SSD with Tentative 2026 Launch   wccftech.com/pure-storage... · Posted by u/rbanffy
timbre1234 · 3 years ago
The density is what's most relevant and interesting here. Pure is putting 28 of these drives in 3U - so 8.9P of nand in 3U drawing ~3kw of power. Pure gets ~2.5 data reduction on average (deep compression & dedup) and so the real world density is pretty impressive.

u/timbre1234

KarmaCake day166May 7, 2020View Original