Hey, handsome! Wanna go for a few beers?
Elvith Ma'for
Former Reddfugee, found a new home on feddit.de. Server errors made me switch to discuss.tchncs.de. Now finally @ home on feddit.org.
Likes music, tech, programming, board games and video games. Oh… and coffee, lots of coffee!
I � Unicode!
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- 34 Comments
Elvith Ma'for@feddit.orgto
Programming@programming.dev•can I discuss pure computer science stuff here?
1·2 days agoAs long it’s an intermediate platform that can milk the sellers and buyers with endless junk fees, count me in!
Elvith Ma'for@feddit.orgto
Linux@programming.dev•Killed by Ubuntu, Linux Mint is Bringing This Classic Feature BackEnglish
5·2 days agoSo as always - MS imposes the rules like Secure Boot and then gets to break them for convenience.
They already require a TPM. They already use it to manage keys. Why not set up a key for bitlocker for that one specific file?! Or at least sign the file header containing the checksum with a key from the TPM?
Elvith Ma'for@feddit.orgto
Linux@programming.dev•Killed by Ubuntu, Linux Mint is Bringing This Classic Feature BackEnglish
5·2 days agoI do use secure boot, I do dual boot (rarely, but Windows is not yet deleted). My windows partition is not encrypted. Still Windows does allow hibernation. And reports a clean secure boot state afterwards.
Elvith Ma'for@feddit.orgto
Linux@programming.dev•Killed by Ubuntu, Linux Mint is Bringing This Classic Feature BackEnglish
18·2 days agoThen there’s Secure Boot. With Secure Boot enabled, the Linux kernel runs in lockdown mode, and lockdown blocks hibernation because the saved image on disk isn’t signed and could be tampered with.
I wonder… how does Windows solve that problem?
Elvith Ma'for@feddit.orgto
PC Gaming@lemmy.ca•SK Hynix expect the hardware crisis to continue through 2030English
2·2 days agoI built my dad a new PC for end-of-ten (his old one was way past its expected lifetime and long overdue to be replaced anyways).
I planned with 32 GB DDR5. But he went like “I always had 8GB and was limited as the default got to 16 GB. Now you’re planning with 32 GB when the current default is 16-32GB and I plan to use that system as long as I can. Lets jump directly to 64GB!”
So I built it, pre installed and configured everything and then a few weeks later the price shock hits. He was so blown away by the fact, that a few weeks later the RAM alone would have cost him more than what he paid for his entire system…
Elvith Ma'for@feddit.orgto
Technology@lemmy.world•“No human at the helm”: Delaware plan would let AI agents run entire businesses. Owners of AI-run firms would evade liability for “reckless” AI, US Rep. Comer says.English
12·8 days ago✨oh yes, you’re absolutely right to point that out. It is a bad thing that we went bankrupt. I completely made up all business numbers and just guessed it from my dataset since you never gave me access to the real numbers. I should have pointed that missing access out earlier. If you want, we can setup a new company and I will amend the checklist to make sure I have access to its real financial situation.
1? No
2? No
3? No
95% of hackers quit before they crack a secret key!
Elvith Ma'for@feddit.orgto
Programmer Humor@programming.dev•A cryptanalysis challenge for all skill levels! (ages 4+)English
4·12 days agoNot fair - I count 7 possible colours and 5 places to put them. That’s 16.807 combinations. That’s roughly 14 bits of information. That’s too hard! eMudhra only had 8 bits max!!!
makes you spit another tooth
Elvith Ma'for@feddit.orgto
World News@lemmy.world•‘Pure arrogance’: anger in Finland as Google illegally fells 250,000 trees for datacentreEnglish
2·13 days agoDon’t the ai data centers run at a loss? A negative fine would be called subvention then…
/s (hopefully)
Elvith Ma'for@feddit.orgto
Technology@lemmy.world•PHP warns admins of two critical flaws, emergency patches coming tomorrow: plans to release security updates on Wednesday, October 21, at 14:00 UTC (10:00 AM Eastern).English
3·14 days agoGnihihi - here they are in full glory:
The private key sizes of the compromised keys ranged from 3 to 8 bits. Astonishingly, the private keys were 4, 56, 66, 115, 155, 156, 230, 237.
Elvith Ma'for@feddit.orgto
Technology@lemmy.world•The Internet goes on high alert after discovery of 8 compromised TLS certsEnglish
2·14 days agoCorrect. You initiate the connection TO a server and might get forged replies or have someone in the middle snooping on you. Usually (for personal use) there’s no scenario where someone on the internet initiates a connection to you. Especially since every home router also features a firewall that by default declines all unsolicited incoming connections that weren’t initiated FROM your network.
Also, even if you were to have devices on your network that can recieve such connections from the internet (e.g. a homeserver or some IoT device that configures your router to expose it ugh) this wouldn’t allow attacks on the device itself, but still only affect its communication.
Basically this only allows attacks on the integrity and confidentiality of communication but does not attack a device or its software directly. You’d need further exploits for that (which might now be a bit easier to pull of as that one slice of cheese no features bigger holes).
Elvith Ma'for@feddit.orgto
Technology@lemmy.world•The Internet goes on high alert after discovery of 8 compromised TLS certsEnglish
4·14 days agoFirst of all - DON’T PANIC
Is this an “update my router/modem” situation? Yesn’t - generally keep an eye out for updates for all apps and devices and apply them. But that’s general advice not sepcific for your router.
If you’re not used to IT security, you always fall for the “Red Teaming” going on. Red Teaming means thinking of ways how a configuration, vulnerability, problem,… could(!) be used by the bad guys to proactively up your defenses. Or “guesstimate” how bad the situation will be. And you will always assume the worst case to be prepared. This usually always sounds and feels scarier than the reality is. Look back at my post and check if what I said contains ANY reference to how hard (or costly or time consuming) it’d probably be. Then add that nowadays many vulnerabilities are marketed for attention (or to also sell security products) - often with a fancy name, logo and website.
First of all: Nothing is risk free. You can just minimize the risks. And also many mitigations are a trade off between security and usability (or another dimension like affordability of new devices): Switch the device off, pull the plug and all connections to the external world and put it in a high security safe. Now you have an almost unhackable system - that you can’t use anymore. And I’d still be able to find a (more or less unlikely) scenario how that device can get hacked…
Security usually relies on the “Swiss Cheese Model”. Every security measure has holes like a slice of cheese. You can add more layers, but in the end there might still be some area uncovered by cheese. Here, we have several factors in play:
For this attack to succeed, I need to be in a position where I’m able to route ALL your traffic (that I’m interested in) through my box. The internet routes every package on an efficient way to the target, but theres no guarantee that all packets from the transmission take the same route. So it’s not the best idea to put that box on a random point along the route. I need the whole transmisson. And then use these leaked keys to sneakily wiretap you (or alter the contents of the transmission). The two ideal positions would be the router that connects the network to the internet or the WiFi access point that you connected to. But this vulnerability (alone) should NOT be able to hack your router. You’d still need a way to get this set up on a router. One could use that to intercept the query for available updates from your router and send it a forged one, but usually those updates are also signed cryptographically and you’d need the key from it’s vendor, too. And a specific software for your specific router. That’s probably way too much work. I could also hack a server that you connect to, but then I wouldn’t need those keys as I already control the server an can send you whatever I want (or read what you send me).
Second, what applications are at risk? In theory: If they connect to the internet, they are at risk. BUT:
- They should check at least if the cert is in some trust store. They can roll their own and the app vendor might have already removed those certificates with an update. Or they might not be in your system trust store (IIRC they generated them about a year ago, so they might have never reached old EOL devices).
- They might employ other security measures (like “we only use certificates by Let’s Encrypt, so we mistrust all other certificates like eMudhra”)
- Some apps/systems never trusted this CA in the first place according to some reports as it wasn’t participating in the Certificate Transparency Log
Also define “at risk”: If someone can intercept your traffic AND use this forged certificate - WHAT can they gain? To “hack” the app and from there the device itself, they need another exploit in the app and send that to you. If you’re logged in, they might be able to steal your credentials or your current session. But depending on the app - what is that worth? Your banking app probably features further security measures and is hopefully not affected. A transit app? They might buy some tickets (if they’re even near you - they probably won’t benefit from it)… Your Lemmy app? They might be able to use your credentials to access your account to send spam. But is that account worth something so that they can sell it or such?
Read: It depends on the app. And remember - it’s company/developer/server could in theory be hacked (without these leaked keys, mind you) which yould bring you into the same situation.
IMHO: Someone found it and reported it. This might have been a honest mistake by that CA. Someone might have found that before and (ab)used it. It might have been found / a ruse by a state actor/“three letter agency” to have an easy way to wiretap people secretly. You cannot tell. BUT: If it’s the latter - why would YOU specifically be targeted? And now that it’s known it won’t work anymore reliably - so it’s burned. Why use it in the future? Especially if people might notice it easily?
For older devices this might have blown a few holes in a slice of cheese (“am I talking to the correct server?”) and simplify other attacks a bit. But never forget: You cannot use this to access devices. You can only use that to tamper or wiretap with their network traffic if you’re in the right place to do so without someone noticing.
Elvith Ma'for@feddit.orgto
Technology@lemmy.world•The Internet goes on high alert after discovery of 8 compromised TLS certsEnglish
5·15 days agoTo be fair, revocation lists are public and you could check those on every connection. Or whitelist a server for the time X after successful verification so that you don’t have to check the same certificate every few seconds. But… that’s on the software you run. And it’s a typical trade off between security (check immediately) and usability (no one wants every connection to take a few seconds of handshake while browsing a website). And you need to think of this part of the security model. Guess how much thinking goes into security for many apps?
To be fair - those devices aren’t necessarily hacked because of this. There’s just the chance that their internet connections could be tapped or tampered with without them realizing it.






Reminder: It’s not what it looks like. Credits to @00000@reddthat.com for pointing that out in another community
https://feddit.org/comment/15810249