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Old 03-22-2016, 07:36 AM   #16
przemo
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anyway, if someone is changing permissions on your file-system that means he have access to root account ie (you should change passwords) or he is using sudo ie (you should change passwords) but finally even that might be not enough ie (reinstall system).

ps. i am not the expert but you sound like you have no clue what you talking about:
https://wiki.archlinux.org/index.php/users_and_groups
https://en.wikipedia.org/wiki/Rkhunter

Last edited by przemo; 03-22-2016 at 07:40 AM.
 
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Old 03-22-2016, 08:09 AM   #17
sundialsvcs
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I'm not seeing anything "outrageously suspicious" in that text file.

Please give us details. Don't say "so-many users" ... name them all. Give "an agonizing level of detail."
 
Old 03-23-2016, 06:15 AM   #18
Habitual
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Are you certain that some one isn't just logging in as "guest" on the system?
The attachment seems to suggest it:
Code:
guest-efyb9y :1           Wed Mar 16 01:57 - down   (20:57)     0.0.0.0
...
guest-8rBJ1s :1           Tue Mar 15 22:14 - 23:25  (01:11)     0.0.0.0
The command
Code:
sudo lastlog | grep -v "Never"
should show these entries.

Last edited by Habitual; 03-23-2016 at 06:18 AM.
 
Old 03-23-2016, 07:14 AM   #19
sundialsvcs
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Dunno ... those names look pretty darned synthetic to me. I doubt you'd find them in /etc/passwd (which, although not the "real" password-file these days, is often consulted to match names with uid's). So, I wonder if we could be being misled by what we see here ...? (And not necessarily in a "false flag" way.)
 
Old 03-24-2016, 06:57 PM   #20
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Quote:
Originally Posted by apples45 View Post
I am Tara. There should be one guest. There are several that seem to have unlimited access.
I'm not currently aware of any (desktop) application that requires a guest account to access resources though I can imagine it's one way. It may be just a mechanism and not something malicious. Hard to say from what you have posted so far.


Quote:
Originally Posted by apples45 View Post
I have noticed numerous programs show up that I do not remember installing, though I could have. Most unnerving is there seems to be a theme about access to audio or something? Could you please explain the language.
Your OS will install applications for you depending on initial choices (plain Desktop, Developer or musicians tools, et cetera) and later on when you opt to install any. In some cases components may be added, for example Desktop Environments like KDE and GNOME are known to pull in all sorts of dependencies. Anyway, installation / uninstall operations should all be listed in your package managements log. So it would be a good thing to inspect plain text /var/log/yum* or /var/log/dnf* logs if you're running Fedora or derivative or /var/log/apt* logs if you're running Debian or derivative.


Quote:
Originally Posted by apples45 View Post
I will attempt to find something that legitimately shows my concern.
That would be helpful, yes.


Quote:
Originally Posted by apples45 View Post
I could very well be interpreting things. I do take medication.
Heh, no with "interpreting" I mean you are trying to come up with a plausible explanation for observations that you are not yet capable of analysing technically.


Quote:
Originally Posted by apples45 View Post
However, the fact that I no longer have authority to access my files makes me wonder. There are several "files systems" I'm concerned about...
Then let's focus on that first. What do you do when you don't "have authority"? Are you using a file manager to browse a local file system? Is there an application you try to open files in? Please walk us through the steps in detail so we can try to see things "through your eyes". Also what errors do you get? Can you post screen shots of them?


Quote:
Originally Posted by apples45 View Post
I attached what it says.
Thanks. Helpful. However you forgot to add the output of
Code:
sudo grep -v '^#' -r /etc/sudoers*; getent passwd;

Quote:
Originally Posted by apples45 View Post
Just let me know if there is someone accessing my files please.
I'm sorry but that's just "a question too far" right now.


By the way: did you manage to start reading your Linux distribution of choices basic user documentation? If not please do.
 
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Old 03-24-2016, 07:21 PM   #21
Drakeo
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Seems to me with all do respect your living with the mind set of windows. I am not minimizing your situation. But seems to me your system isset to login to the last used user. Untill you learn linux and a few commands for linux then the info I have read leads me to believe your youth of the operating system is the real issue.
To learn linux Ubuntu is very confusing to me. But I am sure you may learn Ubuntu. If you own the computer and you are unable to remove cache with a sudo command that tells me your the incorect user of that system. If you are unable to do many of the things people have asked tells me your logged in as the incorrect user.
If you had created a the users the linux way you would know every detail of each user. I wish you luck.
wipe it start over.
 
Old 03-25-2016, 09:46 AM   #22
yancek
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Quote:
a friend put this on my system to prevent a security breach
Explain what "this" is. Are you saying a friend installed Ubuntu 14.04 on your computer? If that's the case, your friend would have had to create at least one user. A password would also have to be given for this user. This primary user would have root/admin privileges. In your case, I would expect that to be 'tara'. Basically, to have more than 'read' access outside your /home/user directory and to do such things as install software and change system configurations, you would need root privileges. For example, to use the Software Center to install new software, you would be prompted for this password. Did your friend give you the password used to create the user 'tara' and is that the primary user?

The guest account on Ubuntu 14.04 is there by default. When you boot Ubuntu, you should see the login page and at least user tara and guest. I have Ubuntu 14.04 installed and on the login page, I see the 2 users I created plus a guest account. When I click on the guest account to login there is a pop-up which states " All data created during the guest session will be deleted when you log out and settings will be reset to default. It also indicates that if you want to save data, you need to do that manually. So unless someone modified all this, the guest account is not going to damage anything. I'm not sure what would happen if someone logged in as guest and had the root password.

If you want to use the guest account, setting up is explained at the Ubuntu page below:

https://help.ubuntu.com/community/CustomizeGuestSession

If you want to delete the guest account, take a look at the page below:

http://ubuntuhandbook.org/index.php/...-login-screen/

Quote:
There are at least 4 unknown guests in my computer
If you had additional users, they would show up under the /home directory and your ls output posted above shows only 'tara' and 'guest'.

As far as removing programs, again your need to use your root password and you should be prompted for it when you try to install softwware from a terminal or from the Software Center. You would need to post more specific details on exactly what you did and what happened.
 
Old 03-26-2016, 04:37 PM   #23
albinard
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As a long-term user but no expert, I know what I would do if I were called upon to handle such a computer: I would save any important files or pictures to USB or other storage and reinstall Ubuntu 14.04. Installation is quite easy; you have already, in all these posts, done more complicated things than installing.

Once you do that, you will be entirely in charge as the sole owner/user.
 
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Old 03-28-2016, 05:38 AM   #24
unSpawn
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Quote:
Originally Posted by albinard View Post
As a long-term user but no expert, I know what I would do if I were called upon to handle such a computer: I would save any important files or pictures to USB or other storage and reinstall Ubuntu 14.04.
Yes, and that behaviour is like sticking your head in the sand: it teaches the user nothing.
 
Old 04-06-2016, 09:18 PM   #25
apples45
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Quote:
However you forgot to add the output of

Code:

sudo grep -v '^#' -r /etc/sudoers*; getent passwd;


Quote:
and that is
Quote:
tara@Tara-Laptop:~$ sudo grup -v '^#' -r /etc/sudoers*; getent passwd;
[sudo] password for tara:


Quote:
 
Old 04-06-2016, 09:24 PM   #26
apples45
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This is what i look at and don't understand. It seems like there are people I don't know in my system log.

Quote:

pr 6 22:23:17 Tara-Laptop wpa_supplicant[926]: message repeated 4 times: [ wlan4: CTRL-EVENT-SCAN-STARTED ]
Apr 6 22:24:25 Tara-Laptop wpa_supplicant[926]: wlan4: WPA: Group rekeying completed with 10:86:8c:00:f1:b0 [GTK=CCMP]
Apr 6 22:25:17 Tara-Laptop wpa_supplicant[926]: wlan4: CTRL-EVENT-SCAN-STARTED
Apr 6 22:30:14 Tara-Laptop dhclient: DHCPREQUEST of 192.168.0.4 on wlan4 to 192.168.0.1 port 67 (xid=0x752e1f3d)
Apr 6 22:30:14 Tara-Laptop dhclient: DHCPACK of 192.168.0.4 from 192.168.0.1
Apr 6 22:30:14 Tara-Laptop dhclient: bound to 192.168.0.4 -- renewal in 1785 seconds.
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> (wlan4): DHCPv4 state changed renew -> renew
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> address 192.168.0.4
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> prefix 24 (255.255.255.0)
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> gateway 192.168.0.1
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> hostname 'Tara-Laptop'
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> nameserver '75.114.81.1'
Apr 6 22:30:14 Tara-Laptop NetworkManager[796]: <info> nameserver '75.114.81.2'
Apr 6 22:30:14 Tara-Laptop dbus[514]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Apr 6 22:30:14 Tara-Laptop dbus[514]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'


for the following.. who is listening??
Quote:
Apr 6 21:36:04 Tara-Laptop wpa_supplicant[926]: wlan4: WPA: Key negotiation completed with 10:86:8c:00:f1:b0 [PTK=CCMP GTK=CCMP]
Apr 6 21:36:04 Tara-Laptop wpa_supplicant[926]: wlan4: CTRL-EVENT-CONNECTED - Connection to 10:86:8c:00:f1:b0 completed [id=0 id_str=]
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> (wlan4): supplicant interface state: 4-way handshake -> completed
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'BHNTG1682GF1B2'.
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4) Stage 3 of 5 (IP Configure Start) scheduled.
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4) Stage 3 of 5 (IP Configure Start) started...
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> (wlan4): device state change: config -> ip-config (reason 'none') [50 70 0]
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4) Beginning DHCPv4 transaction (timeout in 45 seconds)
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> dhclient started with pid 1161
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4) Beginning IP6 addrconf.
Apr 6 21:36:04 Tara-Laptop avahi-daemon[686]: Withdrawing address record for fe80::226:5eff:fe08:a05 on wlan4.
Apr 6 21:36:04 Tara-Laptop avahi-daemon[686]: Leaving mDNS multicast group on interface wlan4.IPv6 with address fe80::226:5eff:fe08:a05.
Apr 6 21:36:04 Tara-Laptop avahi-daemon[686]: Interface wlan4.IPv6 no longer relevant for mDNS.
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> Activation (wlan4) Stage 3 of 5 (IP Configure Start) complete.
Apr 6 21:36:04 Tara-Laptop dhclient: Internet Systems Consortium DHCP Client 4.2.4
Apr 6 21:36:04 Tara-Laptop dhclient: Copyright 2004-2012 Internet Systems Consortium.
Apr 6 21:36:04 Tara-Laptop dhclient: All rights reserved.
Apr 6 21:36:04 Tara-Laptop dhclient: For info, please visit https://www.isc.org/software/dhcp/
Apr 6 21:36:04 Tara-Laptop dhclient:
Apr 6 21:36:04 Tara-Laptop NetworkManager[796]: <info> (wlan4): DHCPv4 state changed nbi -> preinit
Apr 6 21:36:04 Tara-Laptop dhclient: Listening on LPF/wlan4/00:26:5e:08:0a:05
Apr 6 21:36:04 Tara-Laptop dhclient: Sending on LPF/wlan4/00:26:5e:08:0a:05
Apr 6 21:36:04 Tara-Laptop dhclient: Sending on Socket/fallback
Apr 6 21:36:04 T



For the following.. I dont have a fax set up.
Quote:


36:27 Tara-Laptop colord: Device added: cups-HP-LaserJet-Professional-M1212nf-MFP
Apr 6 21:36:27 Tara-Laptop colord: Profile added: HP-LaserJet-Professional-M1212nf-MFP-Fax-3-Gray..
Apr 6 21:36:27 Tara-Laptop colord: Profile added: HP-LaserJet-Professional-M1212nf-MFP-Fax-3-RGB..
Apr 6 21:36:27 Tara-Laptop colord: Device added: cups-HP-LaserJet-Professional-M1212nf-MFP-Fax-3
Apr 6 21:36:27 Tara-Laptop colord: Profile added: Officejet-5600-series-Gray..
Apr 6 21:36:27 Tara-Laptop colord: Profile added: Officejet-5600-series-RGB..
Apr 6 21:36:27 Tara-Laptop colord: Device added: cups-Officejet-5600-series
Apr 6 21:36:27 Tara-Laptop colord: Profile added: Officejet-5600-series-Fax-Gray..
Apr 6 21:36:27 Tara-Laptop colord: Profile added: Officejet-5600-series-Fax-RGB..
Apr

Last edited by apples45; 04-06-2016 at 09:37 PM.
 
Old 04-06-2016, 09:44 PM   #27
apples45
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Is RED HAT some sort of bug or something. I promise I will stop with this ridiculousness.

Quote:

59 Tara-Laptop NetworkManager[796]: <info> Loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list.
Apr 6 21:35:59 Tara-Laptop NetworkManager[796]: <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc. To report bugs please use the NetworkManager mailing list.

 
Old 04-06-2016, 10:05 PM   #28
apples45
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my bluetooth isn't activated, what is initializing it?

Quote:

6 21:27:45 Tara-Laptop kernel: [ 28.644066] Bluetooth: Core ver 2.17
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.644084] NET: Registered protocol family 31
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.644085] Bluetooth: HCI device and connection manager initialized
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.644135] Bluetooth: HCI socket layer initialized
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.644137] Bluetooth: L2CAP socket layer initialized
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.644140] Bluetooth: SCO socket layer initialized

Apr 6 21:27:45 Tara-Laptop kernel: [ 28.648972] usbcore: registered new interface driver btusb
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.866564] Console: switching to colour frame buffer device 160x50
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.868997] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
Apr 6 21:27:45 Tara-Laptop kernel: [ 28.868999] i915 0000:00:02.0: registered panic notifier
Apr 6 21:27:45 Tara-Laptop kernel: [ 29.023914] ACPI: Video Device [VID1] (multi-head: yes rom: no post: no)
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.418048] acpi device:3e: registered as cooling_device2
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.485390] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A03:00/LNXVIDEO:01/input/input11
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.485459] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.485488] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.510714] snd_hda_intel 0000:00:1b.0: irq 45 for MSI/MSI-X
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553967] autoconfig: line_outs=1 (0xf/0x0/0x0/0x0/0x0) type:line
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553970] speaker_outs=1 (0xd/0x0/0x0/0x0/0x0)
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553972] hp_outs=1 (0xa/0x0/0x0/0x0/0x0)
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553973] mono: mono_out=0x0
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553974] dig-out=0x1e/0x1f
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553975] inputs:
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553976] Internal Mic=0xc
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553978] Dock Mic=0xe
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.553979] Mic=0xb
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.571204] input: HDA Intel HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input16
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.571328] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input15
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.571440] input: HDA Intel Dock Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input14
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.571546] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
Apr 6 21:27:45 Tara-Laptop kernel: [ 30.571654] input: HDA Intel Dock Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
Apr 6 21:27:45 Tara-Laptop kernel: [ 32.243786] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem
Apr 6 21:27:45 Tara-Laptop kernel: [ 32.300169] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null)

Apr 6 21:27:45 Tara-Laptop kernel: [ 34.136226] usb 8-2: USB disconnect, device number 2
Apr 6 21:27:45 Tara-Laptop kernel: [ 34.136231] usb 8-2.1: USB disconnect, device number 3

Last edited by apples45; 04-06-2016 at 10:06 PM.
 
Old 04-06-2016, 11:55 PM   #29
apples45
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This is a screenshot showing the "guests" are these normal? Why can't i access the files?
Attached Thumbnails
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Old 04-06-2016, 11:57 PM   #30
apples45
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Quote:
Originally Posted by albinard View Post
As a long-term user but no expert, I know what I would do if I were called upon to handle such a computer: I would save any important files or pictures to USB or other storage and reinstall Ubuntu 14.04. Installation is quite easy; you have already, in all these posts, done more complicated things than installing.

Once you do that, you will be entirely in charge as the sole owner/user.
I want to know who is doing this though. It is important if something is being done to access my audio apparatus'. I want to know who is doing this.
 
  


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