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информационная безопасность
как защитить компьютер
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  • ruRussian
Download
00:00:02
data stored on a computer is no less
00:00:04
relevant than the issue of network data security,
00:00:06
we have already discussed the issues of creating
00:00:08
encrypted and protected partitions, but for
00:00:10
complete security this is not
00:00:12
enough, sometimes
00:00:13
you need to protect your computer
00:00:15
from connecting third-party devices, and
00:00:17
sometimes you need to quickly destroy all the
00:00:19
information reasons doing this may be
00:00:21
a lot and I won’t philosophize on this topic,
00:00:23
so let’s move straight to the
00:00:24
practical part of the question. I’ll show you
00:00:26
several ways to protect your system
00:00:28
not from simple automatic
00:00:30
shutdown, but from bricking the hard
00:00:32
drive; they are all quite simple and easy to
00:00:34
implement, but at the same time very effective.
00:00:36
First the simplest method is the
00:00:38
usp-s utility,
00:00:39
it can protect your computer from
00:00:42
poking foreign flash drives into it, for
00:00:44
example, if you left the computer at work
00:00:46
without blocking it
00:00:47
and one of your colleagues and the shell, then
00:00:49
decently throw off a couple of files for yourself,
00:00:51
so we’ll catch up with him. and your
00:00:53
computer just reboots By the way,
00:00:56
this utility has another useful
00:00:57
function, I’ll show it in the process You
00:01:00
might have a question There are
00:01:02
quite a lot of similar utilities why I chose
00:01:03
this one I’ll explain They’re shot down It will give the most
00:01:06
simple, quickly effective question that
00:01:08
it decides to grow pinin So don’t
00:01:10
bother setting up Personally, I’m
00:01:12
just lazy, and this is also a script
00:01:14
that creates rules for the system
00:01:16
daemon of the devs that controls the operation of
00:01:18
devices in the system, and accordingly it does not
00:01:20
work with memory, which by definition is
00:01:21
good for downloading.
00:01:29
Now let’s go to this folder and
00:01:31
we need to make this script executable,
00:01:35
don’t bother too much and give it all
00:01:37
rights
00:01:38
the script is initially configured to work in
00:01:41
demo mode, that is, it simply keeps logs,
00:01:43
to fix this you need to slightly
00:01:45
tweak the corresponding parameter in the
00:01:47
script code, to do this, open the file and
00:01:50
miss bds and find the line of
00:01:54
smoke from and simply delete it, you can
00:01:58
comment it out, you can fix it with a
00:02:00
new one We save the wish at the first
00:02:05
launch, it makes sense to launch it with the
00:02:07
show parameter to see such
00:02:09
devices are connected, it will show
00:02:15
the device that is currently connected and
00:02:17
before launching you can
00:02:18
install the flash drives you need or then
00:02:20
add to the white list the device from
00:02:22
this list will be added to the rules and
00:02:24
will become trusted, that is, disabling their
00:02:26
connection will not cause any
00:02:28
unexpected actions
00:02:30
if the list suits us, we can
00:02:32
create rules, a message appears
00:02:37
that the rules have been created and activate usp-s
00:02:39
now if we are represented by
00:02:41
any built usb device,
00:02:43
the computer will simply turn off, let me show you
00:02:45
how it works,
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I connect the flash drive to cola
00:02:49
and the whole system has gone out, look further
00:02:53
if suddenly there is a need to
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install a USB device known to us
00:02:58
that is not in the white list, I am knocked down, you
00:03:00
can temporarily disable it, this is done with the
00:03:03
command of any if suddenly this
00:03:07
device needs to be added to the white list,
00:03:09
enter the command
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German forest gene and it will update the list and
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accordingly after that we run it and
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this script also has one useful
00:03:21
function, you can add a device when
00:03:23
you turn it off and turn it on, which will
00:03:25
turn off the computer, done with the
00:03:27
command and jack, and from the list that appears you
00:03:31
need to select the desired device,
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after all, you can add it to yourself as if it were
00:03:36
not a flash drive and let it stick out.
00:03:37
if you suddenly begin to understand that
00:03:38
now you can forgive and something
00:03:40
unpleasant pulled it out, the lump has gone out and the disk is
00:03:43
encrypted
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and you already feel calmer and by the way,
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the USB is logged, they are in the warlock
00:03:51
isds folder, bad and not here by the way, you can
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see the model and serial number of
00:03:58
the flash drive that was shoved now the system engineer is
00:04:00
your absence and then find the owner of the
00:04:02
flash drive and explain to him where you need
00:04:05
to put the flash drive next time, but
00:04:08
if you suddenly got stupid, you managed to
00:04:09
break something and everything stopped
00:04:11
working as it should, you can delete all the
00:04:13
rules and start configuring everything all over again,
00:04:16
this is done with the dl command,
00:04:18
well If this utility doesn’t suit you,
00:04:21
you can use utilities like the
00:04:23
Uzbeks Elisif Garden essentially performs
00:04:25
the same function, that is, make sure that
00:04:27
nothing built is written in your
00:04:29
uzb,
00:04:30
but they have a larger set of functions, you can
00:04:32
choose which files to delete before
00:04:34
rebooting, just block
00:04:36
the connection, don’t lie down from a white sheet
00:04:38
and so on, links to all this will be the
00:04:40
corresponding article on the site, a link
00:04:42
to the site and to the article will be in the description of
00:04:45
this video, whoever needs to go and
00:04:47
use it will also have all the commands that I
00:04:49
’ll put here with descriptions, you
00:04:51
also need to copy from there now let
00:04:53
’s look at more advanced protection options
00:04:55
if in the previous example we meant
00:04:57
that we were simply protecting ourselves from flash poking and
00:05:00
randomly, now let’s imagine
00:05:02
that something really important is stored inside the computer and naturally in an
00:05:04
encrypted section
00:05:05
and let’s think about
00:05:07
how a conditional villain would think if
00:05:10
his knowledge of computers goes beyond the
00:05:11
limits skills to work on board, he must
00:05:14
guess that your disk is encrypted,
00:05:16
that is, he has two options left: to
00:05:17
catch you without the computer turned on and not allow you
00:05:20
to turn it off, or you are breathing yourself, the password is
00:05:23
basically fine with both options, you are
00:05:25
neither, let's start, represents the
00:05:27
worst option when you are not managed
00:05:29
to turn off the cant,
00:05:30
of course you can use it from bts
00:05:32
or analogues,
00:05:33
and when he pokes a flash drive or an external
00:05:35
hard drive,
00:05:36
he will definitely poke it because
00:05:38
he wants to copy everything you have so
00:05:40
that later you can view it in a calm atmosphere,
00:05:42
the computer will turn off and you will
00:05:45
all see a request for a
00:05:46
decryption password disk, which means you
00:05:49
automatically move to the next
00:05:50
level of your relationship, namely
00:05:52
inventing a password, and if you are sure that
00:05:54
your balls are stronger than a doorway, you do
00:05:56
n’t have to look any further, if suddenly it’s
00:05:58
a little softer, then sooner or later you
00:06:01
’ll tell the password if you have usp-s
00:06:03
then you’re dressed after 5 or 8 shutdowns, it all
00:06:07
depends on our intellectual abilities,
00:06:09
as if the villains will understand, but maybe
00:06:11
someone will tell you that something is wrong here and the
00:06:13
moral and physical training of your carcass
00:06:15
will continue and sooner or later you go
00:06:18
activate the USB d'este,
00:06:19
and that's all and a Mauser, so to speak, well,
00:06:22
so that where my faithful one happens, it would be
00:06:24
nice to quickly turn our hard
00:06:26
drive into a pebble, and this is how we smoothly
00:06:29
approach the more radical
00:06:31
random, well, of the radical options, the
00:06:33
easiest way is to use standard
00:06:35
kali linux tools, as you probably
00:06:37
guessed, we are talking o varnish snow thanks
00:06:39
to which you can create a second password, when
00:06:41
entered, the lax header will be deleted
00:06:43
and start the system, as well as
00:06:46
access the data if you get the hard
00:06:48
drive, it won’t work either, but if you take
00:06:50
care in advance, then the data
00:06:52
can then be restored
00:06:53
by the way if you use Nicole Winx
00:06:56
in which everything is already preinstalled and
00:06:57
some other distribution I’ll leave an article on
00:06:59
the site with a link where you can download
00:07:01
lax
00:07:02
hatch for other linux distributions there, in
00:07:05
principle, there are versions for all the most
00:07:07
common distributions now
00:07:09
let’s see how it all works as
00:07:11
you understand grandson can only be applied
00:07:12
to encrypted section, accordingly,
00:07:15
we need to check whether everything is encrypted,
00:07:17
how this command is done cribs stage
00:07:24
if you see the inscription acids 0 enable,
00:07:28
then everything is fine, you can move on to the
00:07:29
next step,
00:07:30
that is, create a password and self-destruct,
00:07:33
let's call it that
00:07:40
now you need to enter the normal
00:07:42
password first and the self-destruct password twice
00:07:49
everything is ready now, after entering the 2nd password, it will
00:07:54
no longer be possible to gain access to the system and data, but a logical
00:07:56
question arises: what should I do if I was frightened and
00:07:59
confused the passwords and want to restore
00:08:01
access to the system, for this I need to make a
00:08:03
backup of the lax header, this is done with the
00:08:06
cribs command, this is plax frames backup
00:08:08
we indicate what our backup file will be called,
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and now we have it in Ukraine, which is
00:08:19
exactly what it is, this is not very sensible and it would be
00:08:22
nice to encrypt it; for
00:08:24
encryption, there is no need to reinvent the wheel;
00:08:26
everything can be done using standard
00:08:27
demax tools, that is, use
00:08:29
appannie sucked; enter the password and we have an
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encrypted file has appeared,
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this file needs to be copied somewhere
00:08:41
onto a flash drive and stored somewhere
00:08:43
separately because that’s where we can
00:08:45
achieve recovery, let’s do that,
00:08:47
throw it onto a flash drive, now I’ll show you
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such an important point how to
00:08:55
restore access to the system if we
00:08:58
had to use the
00:08:59
self-destruct password, come on let's reboot
00:09:05
and enter the second password, as you can see, it
00:09:14
gave us an error, now even if I enter the
00:09:16
correct password, an
00:09:19
error still appears to
00:09:22
fix everything, we will need to boot into
00:09:24
live mode, for example, stop the flash drive with
00:09:26
which we installed the system,
00:09:27
turn off everything, but first I will do a
00:09:30
small manipulation on the login the folder with
00:09:33
potassium installed, by the way, calling
00:09:35
was installed right before recording
00:09:36
the video, I didn’t change anything at all, that is,
00:09:39
everything happens roughly from scratch, we need to
00:09:41
open this file and
00:09:44
add play here at the end and
00:09:50
set it to about 5 seconds, this is by the way I
00:09:54
made it so that I could see the bios a little longer when
00:09:56
loading the virtual operating
00:09:58
system because with the standard
00:10:00
settings you need to have a panther reaction
00:10:02
in order to have time cool sands
00:10:04
[music]
00:10:08
we launch the flashes in live mode,
00:10:11
connect the flash drive
00:10:18
and now we will decrypt our file, enter
00:10:22
the password, you see we have our
00:10:27
forged drags files now we will restore the
00:10:29
header and we will eat in capital letters
00:10:34
and to make sure that the block is installed
00:10:40
we use the command cribs stage lax dan and
00:10:46
we see our headers acids legs acids
00:10:50
one we can all start the system
00:10:52
we will have the correct password
00:11:02
and see that the disk is decrypted well and
00:11:04
that’s probably all for today as
00:11:07
always there was a pulse with you, subscribe to the channel and
00:11:09
see you again

Description:

https://t.me/Pulsechanel - канал Telegram, только там дополнительные и эксклюзивные материалы, а также условия задач по OSINT. https://hacker-basement.com/ - наш сайт. Можно почитать статьи, посмотреть текстовые материалы к видео. Текстовая версия здесь - https://hacker-basement.com/2019/08/28/bezopasnost-komputera-usbdeath-luksnuke/ Вопрос физической защиты данных, хранящихся на компьютере, не менее актуален, чем вопрос безопасности данных в сети. Иногда нужно обезопасить свой компьютер от подключения сторонних устройств, а иногда нужно быстро уничтожить всю информацию. В этом видео инструкция как настроить и использовать USBDeath и Luks Nuke. Поддержать канал материально можно здесь: Patreon - https://www.patreon.com/pulsepagemy Monobank - https://send.monobank.ua/jar/U32Yc8ML3 Стать спонсором на YouTube - https://www.youtube.com/channel/UCojEUrPvEvkUXEU3QWwhCwg/join BTC - 1CSD1ALNB82gmnEKhrrHW2CTfYPw8Dtwog ETH(ERC20) - 0xebbdc2dabdb0cc16fa9cd7d9fc1afd29584483a7 USDT(TRC20) - TUjPM7Q53EZhcBvR24Mw5AQesLszQtgYe4

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