Linked Questions

1
vote
0answers
447 views

Can I login to any Ubuntu OS as root user with no password? [duplicate]

I mean can I login using Advanced options -> Recovery Menu as root user without any restriction (except for a Full Disk Encrypted system)? Can someone explain how to fix this security hole? Visual ...
0
votes
1answer
50 views

Need to add a root password? [duplicate]

Can someone access your info if your laptop get stolen ? I see a bunch of videos on you tube on how easy it is to recover your password.. Any way to make your data "hack proof" ?
0
votes
0answers
13 views

Ubuntu server 18.04.2 [duplicate]

Iam Used Ubuntu server 18.04.2, How to Disable Emergency Mode ubuntu server 18.04 Because just press enter you can do everything you want. If there is no solution, I think this is a bug
53
votes
4answers
14k views

How is being able to break into any Linux machine through grub2 secure?

How is the ability of a person who gained physical access to your computer to get root with those steps in any way secure? When grub2 menu opens press e to edit the Linux start options Change: "...
104
votes
2answers
6k views

How do I enable Ubuntu (using full disk encryption) to call LUKSsupend before sleeping/suspending to RAM?

This question is related to another one by @Stefan, but it is not a duplicate of it. The questions are slightly different: the author simply wanted to know if this had been implemented, while I'm ...
18
votes
4answers
3k views

How can I limit or restrict access to an application?

My son received a new laptop this past christmas, primarily for usage at his new school... And now that he has his own laptop, he's stoked to have Steam installed. But the wife wants me to remove ...
5
votes
1answer
4k views

How can I protect against single user mode

Hello I was wondering how I could protect against single user mode for both init and systemd
4
votes
1answer
3k views

Why there is no password to root under Recovery Mode?

I am trying to understand this situation... Today I got a problem with de sudoers file since I modified and got problem whit this modification. So the only way to solve the problem was to modify the ...
0
votes
2answers
2k views

How strong is Ubuntu's encryption? [closed]

I want to use Ubuntu but I am afraid about the encryption. We all know about prism the surveillance program used by the NSA and regular hackers and i would like to know if the OS encryption is good ...
0
votes
1answer
1k views

How to Protect Grub Boot Loader by Password

I have two systems Ubuntu and Ubuntu (with Lethe). I would like to protect (first)Ubuntu in grub menu password. To you when you type a password only you get access to the system.
0
votes
0answers
427 views

How to trigger a terminal command when incorrect password entered…?

I am trying to make a line of secure operating systems with Ubuntu as the base OS, and I want to have an automated function that will erase the disk if certain triggers are met. Here is what I need (...
0
votes
1answer
212 views

unauthorized root access through emergency mode

When booting, I can get root access to my Ubuntu 18.04 system without authorization by booting into emergency mode, i.e. by taking the following steps: Boot the machine, and in the GRUB menu, press e ...
0
votes
1answer
138 views

password recovery security issue [duplicate]

recently I had reset my ubuntu password using the information provided here password reset By this am changed successfully, but here my question is how can we get security with this. any one can able ...
0
votes
1answer
101 views

Can the sudo password be used to access a user's personal data? [closed]

Specifically, if someone knows my sudo password, can they get my internet password from my browser?
-2
votes
1answer
123 views

How i lock Recovery Mode in Ubuntu 12.04

I want it so that when anybody tries to edit my Ubuntu in recovery mode, then it is required to give the password to edit this: Example of recovery mode entry:

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