Hi there,
Win10 is soon not supported. Tbh Linux have been on my radar since I started to break from the US big tech.
But how is security handled in Linux? Linux is pretty open-source, or am I not understanding it correctly. So how can I as a new user make sure to have the most secure machine as possible?
- Set a decently good password (password is required frequently on Linux, so do go overboard with a 40-random-characters-long password, you will regret it)
- don’t install programs or run scripts from shady sources, prefer to install programs from the Software store (package manager and flatpak)
- setup a backup system to regularly copy all your files to a separate storage device. This is the way to protect yourself from ransomware but also user errors! Having the possibility to format your drive, reinstall and restore backup in a 1 hour time span is going to give you the peace of mine you need for exploring and experimenting with Linux
Linux is always more secure than win10, so whatever your need, Linux is more secure. The biggest threat is almost always yourself, and what you open up, give away, and how easy you make the codes you use and so forth.
Nothin, just install your favourite distro and don’t run random command/scripts/binaries you found on the internet
Like those ‘curl | sudo bash’ abominations that have become strangely popular lately.
So how can I as a new user make sure to have the most secure machine as possible?
That’s not what you want. You want a reasonable level of confidence that your system is secure.
The process is similar to Windows - keep it up-to-date, use good passwords, don’t run things as root (admin), and don’t install things that are questionable.
The package manager under linux is where you should start, and that varys by distro some. But generally speaking things installed from there are “safe” and will be updated by the package manager when you do updates.
There’s a lot of people with the idea that open source can’t be secure because people see the source code.
But imagine this. You have 2 locks, one that is completely viewable of the innerworkings, and another that is covered, both have been unbreakable, but could you imagine the balls on the guy that made the clear lock? Imagine feeling so confident that your lock was clearly the best, that you just expose it to any hacker ever and they still can’t get in.
Microsoft can barely get things working with their closed source code.
In reality, anything is exploitable and hackable eventually. With the open source community there are so many eyes on it that when someone notices that the program is running 2 seconds slower than it used to, they discover a vulnerability instead of just accepting it and saying “probably MS doing some BS” and dealing with it.
your analogy doesn’t quite work here tbh.
It’s not a transparent lock, a transparent lock would be easy to pick. It’s more of a usual lock, but everyone can see all the blueprints and changes done to them. You can make changes to the blueprints yourself, and if the locksmiths approve of it, the next iteration of the lock will have them included.
Everyone who’s in the set of users of OSS software can contribute, therefore the set of people in control of the software that want it to have no backdoors whatsoever is always larger than the set of people who want to let the backdoors in, unlike in closed source, where corporate can singlehandedly decide to include a backdoor on purpose, not to mention, lots of OSS projects have such a large quantities of different people working on them, corpos won’t be able to gather so much humanpower under a single project ever.
Keep your user account in user space.
Avoid unnecessary root access.
Security is an insanely broad topic. As an average desktop user, keep your system up to date, and don’t run random programs from untrusted sources (most of the internet). This will cover almost everyones needs. For laptops, I’d recommend enabling drive encryption during installation, though note that data recovery is harder with it enabled.
That is good advice, however sadly a lot of install scripts are basically: download this script from us, and pipe it to a root shell.
Install scripts for what exactly?
Majority of software is packaged natively.
i personally wouldn’t recommend encrypted drive for a beginner though
They should not us LUkS and instead use veracrypt for folders and files. That way if any repartitioning or modification is needed it’s simple in gparted or GNOME disks on mint.
Source is been there and done that. Luks partitions are not easily resized.
Why not? You (usually) just click the check box during install, and you have 1 extra password when you boot up your system. Doesn’t seem too hard but I might be missing something.
when you fuck shit up you can’t really easily boot in from a usb drive and learn the recovery process
Better to lose the data than have it stolen.
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It’s surprisingly annoying trying to configure LUKS full disk encryption. I had to look up instructions many times over on Mint.
Wait what? I don’t use mint, but with every other distro you just check the box at install and that is it.
Are you saying its hard to configure after you have already installed? I could imagine it might be, but why not export a list of programs you use and back up the home directory. Reinstall and check the box, restore home, and import your package list?
Firstly, LUKS is under “physical disk for encryption” which is a stupid and confusing name.
Secondly, if you want to dual-boot with LUKS you need to manually configure the partitions.
Thirdly, you need to seperately assign root to be installed on the “physical disk for encryption”, and they have multiple volumes for that in the list.
Fourthly, as with all LUKS encrypted Linux distros you need a seperate EFI, boot, and root partition.
Fifthly, all of this partitioning is on a really small window that can’t be resized.
I don’t dual boot, so I guess there is that. But everything else seems very confusing. All other installers say, do you want this encrypted? You click yes. And that’s it.
TBH I’ve installed Mint, Kubuntu, and OpenSUSE and I don’t remember which ones had which issues. I think they’re all Mint but maybe not.
Microsoft being closed source hides their bugs and vulnerabilities. Even when security researchers have sent in reports MS has sat on them due to profit being motive not security, and not taking vulners seriously until the researchers say screw that and publish it.
Linux being open can have all eyes on it, and if there is an exploit, there is a community willing to help ASAP.
On many distros you may have weekly or even daily updates or patches coming through with fixes. A distro like OpenSUSE has various patch and list patch commands that show what security patches are avilailable, their status (critical, recommended) and if it’s needed on your system or not depending on what you have installed. You don’t get transparency on closed source systems.
If you are paranoid about security you can use AppArmor tools or SELinux. AppArmor can be set to learn how an app behaves, then you lock it so the app can’t do new things.
SELinux you set rules for files and folders, so even with remote access an attacker can’t access data if rules don’t allow file listing over SSH etc
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So how can I as a new user make sure to have the most secure machine as possible?
Shut the computer down. That’s it; computer as secure as possible.
Otherwise, if you actually want to use your computer, google for “threat model” first.
But generally: use an adblocker in your webbrowser, don’t execute random commands/tools from the internet before you know for sure what you’re doing, update stuff now and then and make backups.
Just make sure everything’s updated.
Microsoft do a good job of updating drivers and their applications, but Windows application updates vary so much.
For Linux - mostly - the distro maintainers handle all updates and just updating is usually enough.
After that it’s down to you… if you disable all the built-in protection and visit dodgy websites then any OS is going to struggle.
You can improve the out-of-box security by removing software you don’t use, improving default configurations (one size doesn’t fit all) and considering if you want additional security software - this applies to any OS.
So, to return to your question, choose a Linux distro which has regular updates and only contains applications that you use.
Visiting dodgy websites in itself isn’t as risky as you make it out to be. There are very few exploits in an updated version of Chrome or Firefox that would compromise your machine.
To be honest, security in the desktop Linux space has traditionally been a bit shit.
Since you’re new, it’s important for you to understand that Linux is a kernel. That’s the most low-down part of your operating system that handles your OS talking to your hardware and vice versa. Linux is not a full OS; it doesn’t provide any userspace tools that an OS provides. That’s why people don’t install Linux on its own, but they install Linux distributions, which are full OSes using the Linux kernel that come with more or less software to make Linux a complete OS, or at least bootable. That means that there is no one way to do things in Linux. There are some Linux distributions that are security-focused, such as Qubes OS and Alpine Linux. There’s also the new immutable distros, which provide security because the entire OS is defined declaratively, meaning you can easily rollback changes, and it’s harder to get infected with malware on those systems. There’s a lot of variability. Some systems are quite secure by default. A lot of other systems do not set up any security measures by default and expect the user to do that.
If you’re interested in hardening your Linux install, I would recommend the Arch wiki’s security page which has a lot of good advice.
Security is a really broad topic and the relevant security measures for you are going to vary based on your threat model. General good practices include using some form of MAC, setting up a firewall, don’t install random crap you don’t need (and if you are getting software from somewhere that isn’t vetted, e.g. the AUR, you should vet it yourself—e.g. if you use the AUR, learn to read PKGBUILDs), use full-disk encryption. Anti-virus software is largely not necessary on Linux, especially if you only install software from your package manager and follow other security good practice.
the most secure possible? you’ll need to learn a ton. you’ll get there, but it’ll take a while.
decently secure? install Linux Mint, install your updates, don’t run sketchy commands with URLs in them unless you know what you’re doing, maybe follow a hardening guide. you’ll be okay.
if you need to be extremely secure and private, install Tails on a USB stick. it will be slow and frustrating, and you’ll need to save files to a second USB drive, but it will probably keep you pretty safe, and it’s decently user-friendly. just make sure you keep Tails updated! you’ll have to do that by flashing the new Tails onto a new USB drive, there’s no easy way around that.
those are your two most user-friendly, safe approaches.
I just want to say that you’re probably worrying too much about it. Of course, there is lots of things one can do to improve security (which the others here are listing dutifully) and it is foolish to just assume that one’s computer is entirely secure, because as a user, you will always have the ability to bypass that.
But there’s a pretty firm consensus in the IT industry that Linux is more secure than Windows. And that the popular Linux distributions are more trustworthy organizations than Microsoft.
So, it’s good to inform yourself, but if you survived on Windows, you at least should not worry about the Linux side of things. It’s more than fine.
You don’t actually need “perfect” security in the future, any more than you did in the past. Windows was not perfect, right? So stop looking for perfection. Instead, look for “good enough for 99.9% of the world”. And you can get that with many of the popular Linux distributions.
Basically, install a popular distro, and keep your software to whatever is in the package manager. Don’t install random shit manually. Don’t download random software from random websites. Don’t fuck with security settings unless you read up on the topic very thoroughly. Then you’ll be fine.
