I was recently intrigued to learn that only half of the respondents to a survey said that they used disk encryption. Android, iOS, macOS, and Windows have been increasingly using encryption by default. On the other hand, while most Linux installers I’ve encountered include the option to encrypt, it is not selected by default.
Whether it’s a test bench, beater laptop, NAS, or daily driver, I encrypt for peace of mind. Whatever I end up doing on my machines, I can be pretty confident my data won’t end up in the wrong hands if the drive is stolen or lost and can be erased by simply overwriting the LUKS header. Recovering from an unbootable state or copying files out from an encrypted boot drive only takes a couple more commands compared to an unencrypted setup.
But that’s just me and I’m curious to hear what other reasons to encrypt or not to encrypt are out there.
I don’t https://xkcd.com/538/
I’m convinced the chances of me losing access to the data are higher than encryption protecting it from a bad actor.
Let’s be real, full disk encryption won’t protect a running system and if someone has physical access and really wants it, encryption won’t protect you from the $5 wrench either.
I do encrypt my phone data though, as someone running away with my phone is more realistic.
Who’s gonna come at me with a $5 wrench because they really want my data, though? The attack I’m most likely to experience is someone stealing my laptop while I’m out traveling. That’s what full filesystem encryption solves best.
Or per XKCD, where are they finding a wrench for $5??
I’d imagine you could get a decent bludgeoning wrench for around that at a pawn shop. Doesn’t need to be super functional. A pipe wrench in need of some rehabilitation would work nicely.
I’m not worried about getting raided by the KGB or anything like that, but break-ins happen and my computer equipment would be a prime target for theft.
I occasionally cycle my backup drives off-site, so I want those encrypted as well.
The cost of encryption is very close to zero, so I don’t even entertain the question of whether I should encrypt or not. I just encrypt by default.
Possibly overestimating the value of the data entrusted to me, but whenever I see that xkcd, I like to think that I at least have the option to remain silent and die with dignity if I really don’t want the contents of my disk out there.
Tackling the real issues right here!
It should be encrypted by default because most people don’t take care to dispose of their machines responsibly. I picked up a few machines destined for ewaste and the hard drives were full of tax returns.
I encrypt all my drives. Me and the people I know get occasionally raided by the police. Plus I guess also provides protection for nosy civilians who get their hands on my devices. Unlike most security measures, there is hardly any downside to encrypting your drives—a minor performance hit, not noticeable on modern hardware, and having to type in a password upon boot, which you normally have to do anyway.
No. I break my system occasionally and then it’s a hassle.
I don’t think I encrypt my drives and the main reason is it’s usually not a one-click process. I’m also not sure of the benefits from a personal perspective. If the government gets my drives I assume they’ll crack it in no time. If a hacker gets into my PC or a virus I’m assuming it will run while the drive is in an unencrypted state anyway. So I’m assuming it really only protects me from an unsophisticated attacker stealing my drive or machine.
Please educate me if I got this wrong.
Edit: Thanks for the counter points. I’ll look into activating encryption on my machines if they don’t already have it.
is it’s usually not a one-click process
It is, these days. Ubuntu and Fedora, for example. But you still have to select it or it won’t happen. PopOS, being explicitly designed for laptops, has it by default.
If the government gets my drives I assume they’ll crack it in no time.
Depends on your passphrase. If you follow best practice and go with, say, a 25-character passphrase made up of obscure dictionary words, then no, even a state will not be cracking it quickly at all.
If a hacker gets into my PC or a virus I’m assuming it will run while the drive is in an unencrypted state anyway.
Exactly. This is the weak link of disk encryption. You usually need to turn off the machine, i.e. lose the key from memory, in order to get the full benefits. A couple of consolations: (1) In an emergency, you at least have the option of locking it down; just turn it off - even a hard shutdown will do. (2) As you say, only a sophisticated attacker, like the police, will have the skills to break open your screenlocked machine while avoiding any shutdown or reboot.
Another, less obvious, reason for encrypting: it means you can sell the drive, or laptop, without having to wipe it. Encrypted data is inaccessible, by definition.
Encryption of personal data should be the default everywhere. Period.
Well said. LUKS implements AES-256, which is also entrusted by the U.S. government and various other governments to protect data from state and non-state adversaries.
A big benefit of encryption is that if your stuff is stolen, it adds a lot of time for you to change passwords and invalidate any signed in accounts, email credentials, login sessions, etc.
This is true even if a sophisticated person steals the computer. If you leave it wide open then they can go right in and copy your cookies, logins, and passwords way faster. But if it’s encrypted, they need to plug your drive into their system and try to crack your stuff, which takes decent time to set up. And the cracking itself, even if it takes only hours, would be even more time you can use to secure your online accounts.
On Linux, my installs always had a checkbox plus a password form for the encryption.
I think this is true for computers that are in danger of being stolen. Laptops or PCs in dorms or other shared living spaces. But I live in a relatively secure area, burglaries are very rare and my PC never leaves the building. So the benefits of encryption are pretty much negligible.
What are the downsides to encryption? Though you may have negligible benefits, if there are also negligible downsides then the more secure option should be chosen.
- The LUKS encryption can get corrupted
- The password may be forgotten
- harddrives can be corrupted, too. That’s where backups come in
- True, though one could use a security key or password manager to overcome that, or setup secure boot/TPM to where a password isn’t actually needed. If all else fails, again, backups.
So when the laptop dies, the disk cannot be read anywhere because the tpm is lost?
Correct, the hard disk in the laptop can not be read. This is where having a good backup strategy is important. Similar to how if your hard disk dies you’re no longer able to access the material on the hard disk. For me, the downsides of encryption do not outweigh the benefits of having my data secure.
I enabled full disk encryption during OS installation, set up a secure passphrase, and then set up automated encrypted backups to my home server, which are automatically backed up to a remote server.
I gain peace of mind in knowing that if my laptop is stolen I’m only out the cost of the laptop, the data within is still safe and secure.
GNOME disks is a nice GUI that lets you setup disks with ease. Encryption can be easily setup with it.
No.
I spend a significant amount of time on other things, e.g. NOT using BigTech, no Facebook, Insta, Google, etc where I would “volunteer” private information for a discount. I do lock the physical door of my house (most of the time, not always) and have a password … but if somebody is eager and skilled enough to break in my home to get my disks, honestly they “deserve” the content.
It’s a bit like if somebody where to break in and stole my stuff at home, my gadgets or jewelry. Of course I do not welcome it, nor help with it hence the lock on the front door or closed windows, but at some point I also don’t have cameras, alarms, etc. Honestly I don’t think I have enough stuff worth risking breaking in for, both physical and digital. The “stuff” I mostly cherish is relationship with people, skills I learned, arguably stuff I built through those skills … but even that can be built again. So in truth I don’t care much.
I’d argue security is always a compromise, a trade of between convenience and access. Once you have few things in place, e.g. password, 2nd step auth, physical token e.g. YubiKeyBio, the rest becomes marginally “safer” for significant more hassle.
but if somebody is eager and skilled enough to break in my home to get my disks, honestly they “deserve” the content.
The problem with “my disks” is there’s always some other’s people on it, in one way or another.
But of course, it’s your call. We all have gaps in our “walls” and it’s not like I’d be pretending that LUKS is all that matters.
My laptops are encrypted in case they get stolen or someone gets access to them at uni.
I started encrypting once I moved to having a decent number of solid state drives as the tech can theoretically leave blocks unerased once they go bad. Before that my primary risk factor was at end of life recycling which I usually did early so I wasn’t overly concerned about tax documents/passwords etc being left as I’d use dd to write over the platters prior to recycling.
You got me curious. Passwords yeah, but tax documents? Why?
This was a few drives ago but there was a point in time when most places were giving me digital copies of tax documents which I could upload to tax prep software but things like TurboTax didn’t have an auto import. So you’d need to download them then re-upload them to the correct service. Now they do it automatically so the only thing that would match that now now is receipts for expenses/donations and what not that I need to keep track of for manual entry.
I used to, but not anymore, except for my laptop I plan on taking with me travelling. My work laptop and personal laptop are both encrypted.
I figure my home is safe enough, and I only really need encryption if I’m going to be travelling.
One of my friends locked himself out of his PC and all his data because he forgot his master password, and I don’t want to do that myself lol
Exactly the same rationale as mine.
I encrypt all my filesystems, boot partitions excluded. I started with my work laptop. It made the most sense because there is a real possibility that it gets lost or stolen at some point. But once I learned how simple encryption is, I just started doing it everywhere. It’s probably not gonna come into play ever for my desktop, but it also doesn’t really cost me anything to be extra safe.
Its that simple.
I can expand my own creativity and store every thought and creative Art, without anybody being able to find out after my death or while someone raids me.
Maybe I stored an opinion against some president, and maybe the government changed its working, which allows police to raid someone for little suspection.
You never know if you ever have something to hide. While things are okay now and today, it might be highly illegal tomorrow.
Those are ideas. But generally its only about the feeling of privacy.
I don’t encrypt because it’s too much effort to learn about it.
Id rather keep my filesystem unencrypted so that I can easily recover from problems and encrypt important files as needed, but let’s be real I don’t do that either.
Almost everything that can be is: laptops, desktop, servers (LUKS), phone (grapheneos)
My drives are not encrypted because it’s a hassle if things start going wrong. My NAS is software raid so the individual disks mean nothing anyway. The only drive that is encrypted is my backup disk and I’m not really sure if it was needed.
I use encryption on laptops, because they can be stolen in the train, bus, etc. On work desktop, I do so as well, because there are many people around. However, on everything that stay at home, I prefer not to use it to simplifiy things and get more performance.
Full disk encryption on everything. My Servers, PCs etc. Gives me peace of mind that my data is safe even when the device is no longer in my control.
