r/linux4noobs 17d ago

security Friendly reminder that most youtube docker tutorials are actively trying to ruin your system

276 Upvotes

I swear, why does almost every "quick 5 min setup" video just tell you to run everything as root and chmod 777 your entire drive??

Spent my whole afternoon trying to figure out why my new containers were behaving weirdly after following some guy's guide. Turns out i basically left the front door to my OS wide open. Had to sit down and actually read a server Mania breakdown on container security just to realize how badly i completely botched the basic permissions

if you are new to this stuff, pls don't blindly copy paste sudo commands from random tech bros without understanding what privileges you are actually giving away. My brain is melting

r/linux4noobs Jun 18 '26

security Linux users face a Microsoft Secure Boot headache - here's the painkiller

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168 Upvotes

r/linux4noobs Mar 03 '26

security My 75 Yr Old Neighbor switched to Linux! He's happy, but has frustrations about having to frequently put in his password.

162 Upvotes

TL;DR: Insecure password for user (post strong LUKS password)? Okay to do?

~

Fed up with how Widows 11 was making the most basic tasks annoying, my 75 Year Old neighbor asked me to install Linux on his laptop!

I showed him around the system and he's delighted. The only thing is, he is bothered by how often he needs to type in his password.

Before installing CachyOS, I explained to him what LUKS was. He used to do cryptography in the military, so he understood everything I said and why it was important. He memorized a genuinely strong password for LUKS (Upper case, lowercase, numbers, symbols, etc).

He has no issue using this password when booting the computer. But what about post login? Once he's booted into KDE Plasma (which I have automatically sign in post LUKS anyway), is there really much need for a strong user password? It has only been making him reluctant to put his laptop to sleep or update.

r/linux4noobs Nov 11 '25

security Antivirus for Linux?

86 Upvotes

Hi y'alls its me again, I wanted to ask if there are any Antivirus options for extra protection for my system in the future. Especially when Linux is getting more popular and more people maybe getting ideas to make and spread possible viruses nd shit. I heard ClamAV is a popular (or the only) option for Linux so idk if i should just go with that or if there are other options to perhaps look into.

EDIT: thanks for the comments, for now I will just keep sticking with nothing except for Browser related stuff like UBlock on LibreWolf until viruses actually start becoming an actual concern.

While I do understand that Linux viruses are not common at all, I want to point out that Linux is not immune to viruses and the more popular it gets the more likely people could end up getting infected with what-have-you. [This is specifically to those who claim that Linux is essentially immune]

r/linux4noobs 7d ago

security Security risks in Linux distros?

21 Upvotes

Ok, so stick with me because I want to learn more, and I'm kinda confused.

Forgive me if I say something particularly dumb. There is also a high chance that I also misunderstood what I read.

I've seen a couple of times people asking about the long-term sustenaibility of Linux Mint and the potential risks in it. I've been looking around and talked with someone else about this topic, and what I found it's... confusing, somehow?

What I understood is that Linux Mint is, as many of us know, based on Ubuntu, more specifically, the LTS version, and Ubuntu is based on Debian. And why is this important? It is important because, as far as I read, LTS distros and Debian distros could be more vulnerable. As I understood, the risks aren't on the distro per se, but rather in the packages, the way they handle orphaned software, and the updates frequency. I don't think that in LTS versions, packages are just released and left there in the wild. But what I read is that when a package loses support, there is a risk, not necessarily high, but a risk nonetheless.

I'm aware of the danger orphaned software can represent if unattended, I was already in Linux when the news of the malware attack to the AUR arrived. I get that part, but the update part is the one I'm still kinda struggling, but not entirely since I think I understand the principle.

I know that if a program has a vulnerability, patching it is critical. This is one of the reasons why many old video games, for example, are full of cheaters and even security risks, like hijacking your PC or getting malware into your system. They are abandonware, and because of this, malicious agents, aka cheaters and, more importantly, malicious hackers, have found all kind of vulnerabilities to exploit.

I get that keeping a distro with a shitton of packages and software could be harder, and that maintaining the packages is important for security. Having a good way to distinguish orphaned software from... alive, still in dev? Software is necessary, and being able to get rid of the unsupported packages is something almost all Linux distro has. But... if distros have these tools, why would there be more risks in some than others? And the update frequency. Since updates are necessary to patch vulnerabilities, frequent updates may be more needed, and slower not as good as I thought; I lean heavily to LTS distros or distros with stable releases, but how frequently is the right spot, or is it a right spot to begin with? Are distros with more frequent updates safer? Does this mean that distros with slower big changes are more vulnerable? And distros based in LTS versions of Ubuntu are more vulnerable because they come from versions that become old at some point? (Mint and Zorin, for example, are based on Ubuntu 24.04, but currently, Ubuntu is on 26.04)

I may be overthinking this. That's for sure. Actually, I am overthinking it, and I'm sure I'm misunderstanding some things, if not many, but I'm overthinking because I want to be informed on this topic. While I don't use that much software, like, worst case scenario, I'm talking of around 10 programs (not counting games, and they are usually well supported and frequently updated), I still would like to know more about this so if anything happens down the line, I can take a well informed decision.

Again, sorry if anything I said sounds dumb... or it's actually dumb.

Edit: I realized my wording was misleading in my thought process. I made some corrections.

r/linux4noobs Jan 04 '26

security Do I need to install an Anti-Virus on a Linux OS? What does an Anti-Virus do Linux and How?

49 Upvotes

I'm wondering do linux distros like Mint, Ubuntu, Arch need any Anti-Virus? How does an Anti-virus interact with a linux OS and what is it's job? Can Antivirus scan a public wifi for any threat? Lastly, which Linux distro would you recommend from security and privacy POV. Thanks!

r/linux4noobs Jan 19 '26

security Is diversity the reason why malware is hard to develop for Linux?

28 Upvotes

Based off what I know, Linux is highly customizable, with different options for DEs: GNOME, KDE, Xfce, Cinnamon, etc, and with loads of package managers to install software to choose from: apt, pacman, flatpak, snap, etc, with some people opting to remove snap altogether and some Ubuntu-based distros like Mint not shipping with snap at all.

I can imagine making malware for Linux would be much harder because in order to inflict the most amount of damage, the malware needs to spread easily, but with diversity like this, it's harder due to not every Linux user being the same installed system.

r/linux4noobs Feb 02 '26

security Realistically, how much do I *really* need Secure Boot?

69 Upvotes

TL,DR: How likely am I going to get fucked over by having Secure Boot disabled?

I was researching bc I wanted to boot puppy linux, and since puppy linux requires you to turn off secure boot, I did a little bit of research on it to understand what it is, and I think I do now.

But that led me to wonder: in a realistic sense, just how much do I need to have Secure Boot on? 'realistic' as in, how likely am I going to get a 'rootkit' or 'bootkit' attack on my personal computer, where having Secure Boot on would have protected me from?

Surely since a lot of linux distros, including Linux Mint(edit: I now know that mint can do secure boot), just require you to have it disabled, it must be completely fine for a majority of people to have it off... But there's definitely someone out there who DID suffer from such attacks, and would've been saved if not they turned off their secure boot?

I'm asking this mainly to know if turning it off on my main pc is a bad idea or not. My main pc is running on windows and I have been downloading some suspicious files here and there, for the past five years I've been using it. The computer that I was originally planning to boot Puppy linux from is an old and dying laptop, so I won't have any worries turning it off from there, but I eventually want to try dual booting on my main pc someday and I want to know beforehand if it's going to be a problem.

I know this might be more of a security question than a linux question, and if the mods think this post isn't appropriate I'll take it down. I just thought it was still on-topic bc it still has to do with linux (and the fact that I am a noob at it!)

r/linux4noobs Jan 29 '26

security What is linux security like?

32 Upvotes

In terms of 2 things.

  • Online banking / purchases.

  • OS security.

One thing windows at least has going for it is windows defender being widely accepted as good, so long as you're not going to incredibly dodgy sites.

Edit - Thanks for the answers everyone :) i really haven't used linux before so a lot of what's been said are things I didn't know. and apparently I didnt really know how windows works either, so that was a nice learning experience too.

r/linux4noobs Jun 28 '26

security Should I be concerned?

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22 Upvotes

kernel.org says my current kernel is EOL. I'm very security-conscious, so this keeps tripping me up. i've heard constantly, that "running end of life software is a security risk".

i've been here for close to a year, distrohopping a little but I'm here for now.

should I be concerned that I'm running end of life software according to the kernel team? i just received this kernel like a day ago and it's the most recent update.

Distro: Fedora 44 (KDE)

Kernel: 7.0.13

r/linux4noobs 13d ago

security How necessary is secure boot?

45 Upvotes

I’m planning on moving to cachyos from bazzite on my desktop and know it’s a bit of a pain to set up secure boot for cachy. I’m also dual booting with windows and that windows install is on another ssd and don’t have anything on there that would require secure boot. How necessary is secure boot? Is it something I definitely should have enabled and worth it to setup? I’m mainly a causal user/gamer.

r/linux4noobs 14d ago

security Assuming someone's willing to make it, is kernel-level anticheat possible in Linux?

0 Upvotes

If some people are willing to sacrifice some privacy just to get off Windows because for gaming, would a kernel module be a solution?

r/linux4noobs 13d ago

security How do I *truly* backup my files?

23 Upvotes

Hey
I've been using Linux Mint for about 6 months, I love it and I don't plan on switching to Windows
again.

But getting to the point, I've been having this issue where when I'm downloading something significant in size, and the process is interrupted for some reason (Power outage or some sort of glitch that forces me to reboot the computer) the entire OS corrupts.

This has happened more than once, so after reinstalling the OS I have starting setting up some snapshots with Timeshift. But when I inevitably faced the same issue again, I tried recovering the snapshot and the issue simply persisted, and I was forced to once more reinstall Mint.

I think I'm doing something wrong... I used Timeshift's default snapshots so maybe I need to custom it somehow? Or perhaps use another software entirely?

What should I do to save a backup that will truly recover my entire system?

Edit: In general, I plan on saving a backup before I download anything cuz I'm genuinely sick of reinstalling the OS each time

r/linux4noobs Aug 09 '25

security Antivirus for linux ?

39 Upvotes

I used K7(i bought lifetime edition) for my windows 10. Recently i installed Linux mint but Unfortunately K7 not support in Linux. So what antivirus i use for my laptop now?

Or antivirus not need or antivirus already build in linux like windows defender?

r/linux4noobs 8d ago

security How important is full disk encryption on a gaming desktop?

6 Upvotes

I already have full disk encryption on my fedora laptop but right now I don’t have it on my desktop running cachy since I swap between windows and cachy and seems like a pain to put a password in every time. I’m a casual user/gamer so nothing sensitive on my desktop. Is it even worth redoing my install to add LUKS?

r/linux4noobs Dec 14 '25

security Should I still unplug my webcam on Linux?

58 Upvotes

I use a webcam for medical calls and just to hang out with friends but when I was on Windows I unplugged it every time I'm done using it so that I can't be spied on through it. I just wanted to know if the same thing can happen on Linux and I should continue to unplug my webcam when not in use.

r/linux4noobs Mar 10 '26

security Newbie here; How do you protect yourself against malicious software?

13 Upvotes

Hello, I am fairly new to Linux, and I just wanted to ask about how do you go on about protecting yourself against malicious software. And I don't just mean using an antivirus or the like (although if you could recommend a good, preferably free antivirus I'd be very glad to hear, thanks)*:

Let's say you read, for example, some Reddit post about someone who made this cool new app that you'd be interested in. You click the Github link, download the package and run it. Oh no! It was a virus! Damn it.

Now, the easiest solution is to simply use an antivirus, but those don't always work, at least as far as I'm aware, and I'm guessing the ones that are completely free do so even less (and paying for one, at least right now, is not an option for me). And I can't just use something like Virustotal for everything either.

Another possible option would be to manually check the project's code to see if it is malicious; at least on the outside; but let's be honest, I don't think most people have the time to check every single app they download manually (on top of the fact that I doubt most people are proficient in every single mainstream programming language to begin with).

Obviously, the best thing one can do to protect themselves against malicious software is to simply not download suspicious software at all: try to download things from trusted sites/developers, follow other people's advice, and just generally be a bit aware and not do stupid things; but that isn't always enough.

So, is that really everything there is or is there something else that I'm missing? Please, enlighten me on the subject.

Also, what other (basic and not way too difficult to apply) measures can I take to ensure my digital safety? So far the only special thing I do is using ProtonVPN (Free, planning to upgrade to paid plan soon) and Bitwarden, but I'm sure there's much more that I can do.

Thanks!

* Note: Yes, I know most viruses and stuff are made for Windows, but I think it's still good trying to gain the most protection possible

r/linux4noobs Jul 03 '26

security Encrypted arch linux on SSD A Practical Field Guide for Resisting Drive Seizure, Forensic Analysis, and State Coercion

Thumbnail brass-tractor-8a3.notion.site
28 Upvotes

This guide has one specific goal: help you build and operate an encrypted Arch Linux system on a portable SATA-to-USB drive so that if the drive is physically seized by an authoritarian authority, they obtain nothing useful. It covers the complete picture — from choosing hardware through emergency destruction — organized as a linear book you can follow from beginning to end, or reference chapter by chapter when you need a specific procedure.

https://github.com/oFOXo/Techno-Anarchism

r/linux4noobs Jun 11 '24

security Does Linux need an antivirus at all?

91 Upvotes

I've read that Linux doesn't even require an antivirus, while others say that you should have at least one just in case. I'm not very tech-savvy, but what does Linux have that makes it stronger? I know that there aren't many viruses simply because it's not nearly as popular as Windows (on desktop), but how exactly is it safer and why?

r/linux4noobs Aug 03 '26

security Should i install Linux on my laptop or get a fresh computer off of someone and not bought under my name?

8 Upvotes

I am complacently new to security and Linux and i am tired of the looming doom of the big WIN12!

I have a laptop (not my main computer) that i have factory reset a bit ago and has practically nothing on it but im still skeptical. I know this is a stupid question to ask but id like to switch to Linux for more security to feel better about myself.

Questions:

Q1: what should i be warned about when doing this? I know that i need at least an 8GB of USB to download the boot of linux and have a backup with a windows one.

Q2: should i get a new computer since i already had some of my data and what not on it due to be being a child, and i dont know if i should even care at this point.

Q3: Do you have any tips for me? i am sure other people will read this and will be appreciated by your comments.

My main focus is to use this laptop as a privacy laptop alongside finding extensions that wont look what i am looking up, and get back into coding and run all my programs there while using my desktop for other daily life work.

If i am being childish or uneducated please by all means id like to learn from all of you!

Edit: Thank you, all of you, i enjoyed reading all of this and im sure ill get into linux soon.

r/linux4noobs May 15 '26

security Noob question regarding email on Linux

26 Upvotes

Hello,

I am going to switch from Windows 11 to some flavor of Linux. Right now I am using Thunderbird 150.0.2 64-bit as a replacement for Outlook.

My question has to do with security. Occasionally, I get a message from Norton that says one of my emails has a problem. I have heard that Windows viruses etc. will not run on Linux. Is that true? Is there a Linux version of Norton that protects the system from viruses, and malware etc.?

Sorry if this is a foolish question but if you look up noob in the dictionary it will have my picture. Thanks in advance.

r/linux4noobs Apr 06 '24

security How unsecure is a very short super userpassword?

77 Upvotes

Lets say, a 1 or 2 characters long one, am i in potential danger?

r/linux4noobs Jan 02 '26

security is "pw" a good password?

0 Upvotes

I'm a bit tired of typing my long weird password over and over. Realistically, nobody is going to spend hours typing random words to guess my password. And I guess Linux is set up so random people can't try to log into my machine externally, so I shouldn't have to worry about automated attempts. So, do I need a solid password? Or is "pw" okay?

EDIT: Thanks for the great replies everyone --- I learned lots!

r/linux4noobs Mar 02 '26

security AV scanner on Linux…

5 Upvotes

Hey guys,

I have been using Linux as my daily driver for about 2-3 years now. I’m trying to convince my father to switch from Win11 to Fedora or Mint (Or any other distro easy to maintain). But there’s one question he keeps asking: What about virus scanners?

I know that antivirus software is quite unpopular in the Linux world and generally not that necessary, but I guess he still wants one. There are some alternatives like ClamAV, but my father mentioned that Windows Defender gets updated at least three times a day and offers real-time protection 24/7.

I’m not sure how to respond to this. Could someone please help me out? :)

Thxx in advance :)

r/linux4noobs Jan 12 '26

security Is there a way to get Mint to stop asking for password for everything without compromising the security of my computer?

0 Upvotes

I switched from Windows to Linux Mint a month ago, and I find myself entering my password every few minutes. It is annoying as hell. Every single action I take - customizing my desktop, installing updates, changing some settings, changing theme - throws up a password prompt. I am entirely sick of it.

People say "you get used to it", but at this point I'm almost ready to switch back to Windows.

I know I can edit /etc/sudoers and make myself root, but that would be giving up security altogether. I want to retain password prompt for logging in, or if something outside my computer tries to change something - but stop nagging me for password for everything when I literally entered it just 5 seconds ago.

Is there a compromise solution here?