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Someday my toaster is going to have an IP address. A bad automatic firmware update will most likely cause it to get stuck on the bagel setting until I plug a usb key in and reflash the memory.
Grandma's refrigerator will probably get viruses, lock itself and freeze all the food inside, demanding bitcoin before defrosting.
My blender will probably be used in a massive DDoS attack because Ninja's master MAC address list got leaked and the hidden control panel login is admin/admin.
Ovens will burn houses down when people call in to have them preheat on their way home from work.
Correlations between the number of times the lights are turned on and how many times the toilet is flushed will yield recommendations to run the dishwasher on Thursdays because it's simply more energy efficient.
My dog will tweet when he's hungry and my smart watch will recommend diet dog food in real-time because he's really been eating too much lately--"Do you want to setup a recurring order on Amazon fresh?"
Sometimes living in a cave sounds nice...12 -
I have this little hobby project going on for a while now, and I thought it's worth sharing. Now at first blush this might seem like just another screenshot with neofetch.. but this thing has quite the story to tell. This laptop is no less than 17 years old.
So, a Compaq nx7010, a business laptop from 2004. It has had plenty of software and hardware mods alike. Let's start with the software.
It's running run-off-the-mill Debian 9, with a custom kernel. The reason why it's running that version of Debian is because of bugs in the network driver (ipw2200) in Debian 10, causing it to disconnect after a day or so. Less of an issue in Debian 9, and seemingly fixed by upgrading the kernel to a custom one. And the kernel is actually one of the things where you can save heaps of space when you do it yourself. The kernel package itself is 8.4MB for this one. The headers are 7.4MB. The stock kernels on the other hand (4.19 at downstream revisions 9, 10 and 13) took up a whole GB of space combined. That is how much I've been able to remove, even from headless systems. The stock kernels are incredibly bloated for what they are.
Other than that, most of the data storage is done through NFS over WiFi, which is actually faster than what is inside this laptop (a CF card which I will get to later).
Now let's talk hardware. And at age 17, you can imagine that it has seen quite a bit of maintenance there. The easiest mod is probably the flash mod. These old laptops use IDE for storage rather than SATA. Now the nice thing about IDE is that it actually lives on to this very day, in CF cards. The pinout is exactly the same. So you can use passive IDE-CF adapters and plug in a CF card. Easy!
The next thing I want to talk about is the battery. And um.. why that one is a bad idea to mod. Finding replacements for such old hardware.. good luck with that. So your other option is something called recelling, where you disassemble the battery and, well, replace the cells. The problem is that those battery packs are built like tanks and the disassembly will likely result in a broken battery housing (which you'll still need). Also the controllers inside those battery packs are either too smart or too stupid to play nicely with new cells. On that laptop at least, the new cells still had a perceived capacity of the old ones, while obviously the voltage on the cells themselves didn't change at all. The laptop thought the batteries were done for, despite still being chock full of juice. Then I tried to recalibrate them in the BIOS and fried the battery controller. Do not try to recell the battery, unless you have a spare already. The controllers and battery housings are complete and utter dogshit.
Next up is the display backlight. Originally this laptop used to use a CCFL backlight, which is a tiny tube that is driven at around 2000 volts. To its controller go either 7, 6, 4 or 3 wires, which are all related and I will get to. Signs of it dying are redshift, and eventually it going out until you close the lid and open it up again. The reason for it is that the voltage required to keep that CCFL "excited" rises over time, beyond what the controller can do.
So, 7-pin configuration is 2x VCC (12V), 2x enable (on or off), 1x adjust (analog brightness), and 2x ground. 6-pin gets rid of 1 enable line. Those are the configurations you'll find in CCFL. Then came LED lighting which required much less power to run. So the 4-pin configuration gets rid of a VCC and a ground line. And finally you have the 3-pin configuration which gets rid of the adjust line, and you can just short it to the enable line.
There are some other mods but I'm running out of characters. Why am I telling you all this? The reason is that this laptop doesn't feel any different to use than the ThinkPad x220 and IdeaPad Y700 I have on my desk (with 6c12t, 32G of RAM, ~1TB of SSDs and 2TB HDDs). A hefty setup compared to a very dated one, yet they feel the same. It can do web browsing, I can chat on Telegram with it, and I can do programming on it. So, if you're looking for a hobby project, maybe some kind of restrictions on your hardware to spark that creativity that makes code better, I can highly recommend it. I think I'm almost done with this project, and it was heaps of fun :D
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Client: We are tired of having to go only to specific users to get things actioned, we need everyone to be given admin access so that we can get work done efficiently
Dev: Highly do not recommend that *outlines the likely consequences*.
Client: We don’t care, we DEMAND you do this. We’ll make sure everyone is careful.
Dev: Ok but I warned you. Please submit this request in writing.
Client: Ok, not sure why you would need that. I told you everything would be fine.
*Not even two days later*
Client: HELP!!! OUR DATA IS NOW COMPLETELY MESSED UP. WE HAVE NO IDEA WHAT WOULD HAVE CAUSED THIS IT’S AS IF EVERYONE IS RANDOMLY DOING WHATEVER THEY WANT HOWEVER THEY WANT IN ORDER TO SUITE THEIR OWN NEEDS. IT MAKES NO SENSE HOW THIS HAS OCCURRED. I TOLD EVERYONE SPECIFICALLY TO NOT CAUSE ISSUES!!! WE NEED THIS FIXED A.S.A.P!!!!!!
Dev: …6 -
Because I am very interested in cyber security and plan on doing my masters in it security I always try to stay up to date with the latest news and tools. However sometimes its a good idea to ask similar-minded people on how they approach these things, - and maybe I can learn a couple of things. So maybe people like @linuxxx have some advice :D Let's discuss :D
1) What's your goto OS? I currently use Antergos x64 and a Win10 Dualboot. Most likely you guys will recommend Linux, but if so what ditro, and why? I know that people like Snowden use QubesOS. What makes it much better then other distro? Would you use it for everyday tasks or is it overkill? What about Kali or Parrot-OS?
2) Your go-to privacy/security tools? Personally, I am always conencted to a VPN with openvpn (Killswitch on). In my browser (Firefox) I use UBlock and HttpsEverywhere. Used NoScript for a while but had more trouble then actual use with it (blocked too much). Search engine is DDG. All of my data is stored in VeraCrypt containers, so even if the system is compromised nobody is able to access any private data. Passwords are stored in KeePass. What other tools would you recommend?
3) What websites are you browsing for competent news reports in the it security scene? What websites can you recommend to find academic writeups/white papers about certain topics?
4) Google. Yeah a hate-love relationship, but its hard to completely avoid it. I do actually have a Google-Home device (dont kill me), which I use for calender entries, timers, alarms, reminders, and weather updates as well as IOT stuff such as turning my LED lights on and off. I wouldn"t mind switching to an open source solution which is equally good, however so far I couldnt find anything that would a good option. Suggestions?
5) What actions do you take to secure your phone and prevent things such as being tracked/spyed? Personally so far I havent really done much except for installing AdAway on my rooted device aswell as the same Firefox plugins I use on my desktop PC.
6) Are there ways to create mirror images of my entire linux system? Every now and then stuff breaks, that is tedious to fix and reinstalling the system takes a couple of hours. I remember from Windows that software such as Acronis or Paragon can create a full image of your system that you can backup and restore at any point to get a stable, healthy system back (without the need to install everything by hand).
7) Would you encrypt the boot partition of your system, even tho all data is already stored in encrypted containers?
8) Any other advice you can give :P ?12 -
I have a guy that will come in a few hours to discuss about an e-commerce website he wants to start his business. I've accepted to do it freelance.
Things are a little quick for my taste, but I know myself enough to know that if I don't jump head first, I'll back out and miss on an opportunity to add something valuable to my resume (and get a bit of money).
The thing is : I have nearly zero experience in 1) e-commerce websites and 2) client relationship and managing. So that will be a great challenge to me, but that's precisely what I need right now.
Anyway, I'm coming to you to ask a few questions : assuming his requirements are simple and common for an online shop, should I create it from scratch or would it be wiser to use a dedicated framework (Prestashop, Wix, etc.). If the latter, which one would you recommend, cost and efficiency-wise.
Still assuming simple and common requirements, how much time would it likely take, for an average developper (I'm no Linus Torvalds) working on average 8h a day ? More like 2-3 months, or more like 5-6 months ? I'm leaning more towards 2-3, but since I don't have experience in these kind of websites, I find a lot of user stories that might take me time to figure out.
Last but not least, what would be approximately an honest price, technical costs aside (domain, host, potential framework, etc.) for that kind of work. And for maintenance ?2 -
[Question]
What type of amplifier circuit would I need to power a 60w 8ohm speaker or can you recommend any prebuilt amplifier boards ?
[TLDR;]
I spotted the below stuff while cleaning out my junk cupboard and thought it might be a fun side project to convert them into a portable bluetooth speaker since the earphones are shit anyway and I've always wanted to learn more about amplifiers.
The only question remaining is how to amplify the headphone output signal enough to power the speaker. I plan on either using cells from old laptop batteries or a motorbike battery as a power supply so input voltage would be roughly 10-12v.
The speaker is from a set I salvaged from an old 80's hifi and has excellent sound quality, would mounting the components inside it have a large negative effect on it's sound?
Also although I would prefer to make my own amplifier board as a learning experience the goal is to have a portable speaker with good sound quality... is this something I'm likely to get from my first attempt at an amplifier or should I rather get a ready made board?
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