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Posted by Flimm 1 day ago

Obscura: VPN that can't log your activity(obscura.com)
192 points | 139 comments
barathr 1 day ago|
As others have pointed out, this is like Apple iCloud Private Relay, and other multi-hop privacy systems that have been built on and off over the last several decades (Tor included).

We wrote a research paper on the general principle a few years ago: https://conferences.sigcomm.org/hotnets/2022/papers/hotnets2...

dang 1 day ago||
Discussed (just a bit) at the time:

The Decoupling Principle: A Practical Privacy Framework [pdf] - https://news.ycombinator.com/item?id=33897450 - Dec 2022 (3 comments)

Perhaps we should arrange a new thread about this?

barathr 1 day ago||
Happy to discuss further if it's of interest.
dang 23 hours ago||
Sure! We should just wait long enough (perhaps a couple of months) so the effects of the current thread wear off and it won't feel like a follow-up anymore. If you want to, you'd be welcome to email us then and we could arrange a new thread - similar to what I said at https://news.ycombinator.com/item?id=49807631 (on a completely different topic of course!)
barathr 22 hours ago||
Sounds good.
dongcarl 1 day ago||
Good to see you here Barath :-)

I didn't realize Chris Wood was also an author!

maxloh 1 day ago||
I don't understand the point of this.

Many (if not all) of the benefits on the landing page are available in Mullvad too, which is a more mature and reputable product, has all clients fully open-source, and powers the exit servers for Obscura.

Why should I choose this over Mullvad?

maxloh 1 day ago||
Mullvad is a Swedish company, which has stricter privacy protection laws in place.

According to Obscura's legal page, it is a New York-based company [0]. Under US law, a secretive court order could compel a US company to update software or implement targeted logging on a specific user without notifying that user.

The only scenario where Obscura would be useful is if Mullvad were compromised. Why would I trust a New York company to shield me from a more reputable Swedish company?

[0]: "(2) your written notification must be mailed to 169 Madison Ave.; Ste. 11185 PMB 63183; New York, NY 10016..." https://obscura.com/legal/

dongcarl 1 day ago|||
(Carl from Obscura here)

I love folks who are also reasoning through security models! A few things to note here:

- We believe that all software running on a user's computer should be open source, so you can audit and build your own client: https://github.com/Sovereign-Engineering/obscuravpn-client

- With traditional Single-Party VPNs, even if you trust them fully and they're honest, they can still be compromised or hacked. With Obscura, even if we're hacked there's nothing to leak (other than WireGuard packets fully encrypted to Mullvad's servers).

- The change in trust is that instead of trusting a single company (Mullvad), you're trusting that not both Obscura AND Mullvad have been compromised, which is strictly less likely.

maxloh 1 day ago|||
The "Obscura and Mullvad" argument actually makes sense. Having a company outside of EU jurisdiction makes it hard for both layers to be compromised at the same time.

Another question: How does the Obscura client get the Mullvad exit server’s public key? Are they hardcoded at compile time, fetched from Mullvad's server, or fetched from Obscura's server?

The latter seems to be dangerous if there isn't some kind of signature verification done on the client side before using the key.

traceroute66 1 day ago|||
> Having a company outside of EU jurisdiction makes it hard for both layers to be compromised at the same time.

Its just very, very, very unfortunate that they chose the US for Obscura.

Of all the jurisdictions in the world you chose the one that has become exponentially untrustworthy in the eyes of non-US users ....

voakbasda 1 day ago||
… as well as in the eyes of many of its own citizens.
dongcarl 1 day ago|||
Good question! It's the latter right now (which is not ideal), but I think Mullvad is going to sign their server pubkeys pretty soon and we'll switch to that.

We do currently show it in the app and there's an easily clickable link so you can verify against Mullvad's website for the pubkey

akabul0us 18 hours ago|||
Generating all of your responses with AI makes me 100% sure you are not to be trusted
miohtama 1 day ago||||
The EU is working to make what Mullvad is doing illegal.

https://codamail.com/articles/privacy-law-directory/internat...

"EU surveillance co-operation"

anticensor 11 hours ago|||
They actually recongised Mullvad-type VPNs as UC-2 in the ETSI EN 304 620 VPN standard.
traceroute66 1 day ago|||
> The EU is working to make what Mullvad is doing illegal.

In other news, it has been demonstrated in a court of law that Mullvad "no logs" means no logs.

TL;DR: Six police officers turned up at Mullvad offices with a search warrant for logs and data. Mullvad said "take a look for yourself". They went home with nothing.

Lots of people on HN and elsewhere are spreading a lot of FUD about the EU and what the EU MIGHT do – remember MIGHT .... politicians discuss a lot of stuff, and a lot of it never gets implemented.

It is the job of politicians to discuss issues of the day and potential ways to deal with them.

One thing that is clear. The EU is not a dicatorship. They have a long history of listening and acting on what industry experts tell them. Even if it means "watering down" ideas being discussed by the politicians.

I have a lot of faith that Mullvad (and, frankly, all the other VPN providers) would make a lot of noise if any of this EU FUD people are spreading actually ever became reality.

Until then, I suggest people put the EU FUD tin-foil hat to one side.

[1] https://mullvad.net/en/blog/2023/4/20/mullvad-vpn-was-subjec... [2] https://mullvad.net/en/blog/update-the-swedish-authorities-a...

_nobody 1 day ago||
I have always wondered, what will companies do, if the law changes. Will they still "care" for the consumer, or just "comply" with the law.

[1] - lobbying by leather industry to exempt them from EU Deforestation Regulation - https://news.mongabay.com/2026/09/now-exempt-from-eu-defores...

[2] - lobbying to remove due diligence on human rights violation in supply chain in certain industry sectors - https://www.business-humanrights.org/en/latest-news/eu-csddd...

> They have a long history of listening and acting on what industry experts tell them

Yes, most famously the diesel gate, european automakers cheating emission tests, [3] because EU invited companies to self regulate their lab tests.

[3] - https://corporateeurope.org/sites/default/files/driving_into...

World used to believe companies used to care for them, before snowden showed up. Even now people are still surprised, when companies like LG get caught doing illegal stuff. How long before there is a scandal in EU? Fool me once...

As much as i like to believe EU "cares" about the consumer, its really stupid for someone to blindly put their faith in Mullvad. Zero trust. When you are online, you are on your own.

autoexec 1 day ago||||
Yeah, it's basically not possible to offer an actually secure and private service in the US. If men with guns and gag orders haven't shown up at their new york office yet, they will as soon as this VPN gets popular enough to show up on their radar. At that point if they have any integrity they'll shut their service down like Lababit did rather than allow it to be compromised by the state.
NordStreamYacht 1 day ago||||
Sweden was compromised years ago, Assange's case is proof.
DANmode 1 day ago||
Individuals in Sweden certainly were.
ignoramous 1 day ago|||
I wouldn't be so sure; Ex A: The terrifying expansion of Sweden’s state surveillance, https://edri.org/our-work/the-terrifying-expansion-of-sweden...
dongcarl 1 day ago|||
We think Mullvad is a great privacy tool, which is why we partnered with them!

As for what's different: We're a Multi-*Party* Relays (vs. traditional VPNs which are Single-Party Relays): https://www.privacyguides.org/articles/2024/11/17/where-are-...

With Multi-Party Relays you no longer have a trust a single entity not being malicious or compromised. More on this here: https://obscura.com/#how

Also, all our apps are open-source as well: https://github.com/Sovereign-Engineering/obscuravpn-client

Disclaimer: I'm the creator of Obscura.

frizlab 1 day ago||
How do you compare with iCloud Private Relay (with the obvious exception that private relay only works on macOS, and in specific apps only)?
dongcarl 1 day ago||
We're heavily inspired by them (see our original blog post which is a bit more technical here: https://obscura.com/blog/bootstrapping-trust/)

The differences are:

- We allow you to choose an exit location (I believe iCloud Private Relay restricts you to the same location)

- Our exit hop is Mullvad instead of Cloudflare+Fastly+Akamai

- We use QUIC for transport instead of HTTP/3 (which is built on QUIC and has a bit more overhead)

Barbing 1 day ago||
Same country at least - the iCloud Private Relay options, iOS:

“1: Maintain general location

2: Use country and time zone

Maintain your general location to receive localized content, or enhance your privacy by using a broader IP address based on your country and time zone.

Safari Private Browsing always uses an IP location from your country and time zone.”

LeoPanthera 1 day ago|||
A lot of people are abandoning Mullvad because their CEO is directly funding a far-right political party.

As they should, IMHO.

KoolKat23 1 day ago|||
Purity politics, doesn't work sorry, just highlights hypocrisy.

I can't see how this has any bearing on the functioning of Mullvad, if they were campaigning on circumventing privacy rights it'd be a different story.

max__dev 1 hour ago|||
People not wanting to give money to someone they don't like is now purity politics and hypocrisy?
duskdozer 1 day ago|||
Sometimes people don't want to financially support people or companies that engage in certain behaviors they consider unethical. Whether or not the product functions is irrelevant in such a situation.
KoolKat23 1 day ago||
It's more the soapboxing that's the issue. I long for the days when not everything in life is given a political twist. This is a relatively recent phenomenon.
mephju 1 day ago||||
That actually signals that the CEO has a legit reason for Mullvad to work really well.
Plont 1 day ago||
Sure. But the political party in question has an explicit goal of rounding up and "deporting" all immigrants and all the children of immigrants (including those who grew up in Sweden and are citizens).

Besides being reprehensible, that kind of mass trafficking requires mass surveillance. It simply can't be done without it.

This kind of surveillance is antithetical to what Mullvad promises.

There of course could be a "privacy for me and my customers, but not for thee" thing in their minds.

But I don't trust that CEO whatsoever, and I don't trust the rest of Mullvad's leadership either because their response to the backlash was mealy mouthed "everyone is entitled to their opinion, let's all be civil" minimization schlock. They didn't give a fuck; they just wanted the PR problem to go away.

Mullvad's VPN service might continue to be trustworthy, but... I have other options. And it could be enshittified over time, just like so many other things. At least one CEO has a motivation to enable mass surveillance.

I'm also just not going to knowingly put money into the hands of someone I know will use it for evil, if and when I have a choice, which in this case I do.

duskdozer 1 day ago|||
Do you know if there are other/general replacements for their browser extension that allows choosing a server/location per domain?
bossyTeacher 1 day ago||
Because its CEO is known as the sponsor of the Orebro party?

1.5k comments discussion for context: https://news.ycombinator.com/item?id=48717469

KoolKat23 1 day ago|||
I still don't see the relevance. Modern purity politics is silly. Is there a conflict of interest for Mullvad? If not, I don't see the issue.
bossyTeacher 1 day ago||
Many people also don't see the relevance of reducing reliance in services from Russian companies or using Chinese software for critical matters either. Newsflash, not everyone has the same opinion.
KoolKat23 1 day ago||
That's a slightly different thing. Individuals versus country. This is a company not an individual.
omnimus 1 day ago|||
That indeed can be a problem for many.
fwn 1 day ago||
Calls for ethical purity are usually very selective, serving to protect incumbents.

For example, every big tech company supports the current US administration in some capacity, either with funds, their surveillance stack or both.

Almost noone has stopped using big tech products and services because of that. (Unfortunately!)

But beware! There is someone in one tiny, privacy-preserving company who is doing something that not everyone agrees with!

That is a big problem, right? I think this is a big problem, everyone!

You see those comments in every Mullvad thread, but not necessarily in every thread about big tech products or services.

omnimus 1 day ago|||
Let's not have perfect to be enemy of good (or ok, or better than nothing).

In case of Mullvad it's a niche product with many alternatives. Using something else is viable and it is interesting to many in the niche because their ties to far right was secret up until recently.

It might be harder with something like Basecamp or Figma if your job requires it.

It is almost impossible with things like Google.

Yes we should have these comments in every thread about big tech. It doesn't mean we shouldn't do something about Mullvad.

shafyy 1 day ago|||
I think many people have absolutely stopped giving money to US corporations that are run by fascists like Musk or DHH. Of course, this is and will never be the majority (many people don't care or don't know), but I am certain it's a non-trivial number of people.
fwn 1 day ago||
I am sure there are quite a few people out there who have avoided getting a mainstream smartphone setup or other big tech services.

As you wrote yourself, this is not the majority. Quite the understatement.

However, this is only a tangential notion in my comment. What do you think of my (probably not unique or novel) observation that calls for ethical purity seem to be very selective in a way that (in effect!) benefits big tech?

For example: The other person in this very thread who pointed out that Mullvad is not perfectly pure recommended iCloud in their previous HN comment three days ago. Did their attitude change in this three days? Unlikely.

iCloud is a service from a company that deplatforms ICE transparency apps, among many other things. Its then CEO, Tim Cook, personally gifted one million USD to Donald Trump for his inauguration. (The very thing they criticized: "... their CEO is directly funding a far-right ...")

Humans are rarely pure or heavenly. Double standards help incumbents.

Plont 1 day ago||
I'm not interested in generalising "calls for moral purity" as if all ethical concerns are equivalent.

There is a difference, also, between saying, "I am not morally okay with this, so I am going to do X", vs. "If you don't also do X, you are a Bad Person."

To me, after reading up on the platform of the right-wing party in question and Mullvad's CEO's level of involvement with it, the situation with Mullvad is worse. And because it is a much smaller company, a much greater percentage of my money would go to that CEO in particular. And my choice to pay or not has much more influence on Mullvad than it ever could have on Apple.

Others are free to feel otherwise, and to use their money as they please.

Besides, there are plenty of small company alternatives, like IVPN, which was recommended widely around the time this news broke. And I think that people who found out about Mullvad are likely often the sort to put thought and research into their choice of VPN, rather than just buying NordVPN or whatever based on name recognition only.

A single data point is pretty meaningless. If there were actually data to be found on how the customer base numbers or growth rates of the various VPN companies have or haven't shifted since the news broke, that would be interesting.

Ultimately though, what other people do or don't choose to do is irrelevant to my own choice. Moral purity, as you call it, is impossible. The world is not simple. I am going to do my best to make ethical choices anyway.

shafyy 1 day ago||
Agree fully. Also, using another VPN is simple and possible. Using another mobile platform than iOS or Android is virtually impossible or only possible with a lot of real limitations in your daily life.

And to reply to the parent of this comment: I also wouldn't judge others just because they are a Mullvad customer or whatever.

skaul 1 day ago||
So two hops, basically. First hop sees your IP address but not the website you're going to, second hop sees website but not IP address. Similar to Private Relay: https://support.apple.com/en-us/102602.
dongcarl 1 day ago||
(Carl from Obscura here)

Yup, exactly!

skaul 1 day ago||
Cool work. Can I ask: why not use MASQUE for this, instead of WireGuard-over-QUIC? Is it because it meant less changes on your partner's side?
dongcarl 1 day ago||
(Carl from Obscura here)

Yup! Mostly less changes on Mullvad's side. Also QUIC has less overhead than MASQUE by definition.

mulmen 1 day ago||
But if both services keep logs de-anonymization is a join.
dongcarl 1 day ago|||
(Carl from Obscura here)

Very true, but if even 1 of (Obscura, Mullvad) is honest, there's no de-anonymization.

For traditional Single-Party VPNs, you just need to compromise 1 party, with Two-Party Relays, you need to compromise both.

ignoramous 1 day ago|||
> Very true, but if even 1 of (Obscura, Mullvad) is honest

Just Obscura's compromise is enough, as pointed out previously: https://news.ycombinator.com/item?id=43016574

Unless something has changed in Obscura's architecture, the interface with Mullvad is under Obscura's control, and thus it can compromise client's credentials. This is unlike iCloud Private Relay where the guarantees are cryptographic in nature and not merely based on promises.

PunchyHamster 1 day ago|||
They don't even need to. If you observe enough of them you can correlate traffic patterns between them and find out which one is used by which endpoint
john_strinlai 1 day ago||
i am very skeptical of most vpn companies, and while i haven't looked too hard at obscura, it is worth noting the official partnership with mullvad (https://mullvad.net/en/blog/mullvad-partnered-with-obscura-v...) which is certainly a positive signal

side note: i really wish more companies did the no email + randomized account number flow. there is a certain popular "pro-privacy" product beloved by many here that requires an email address and refuses to offer a similar account number method, which has turned me off the product.

dongcarl 1 day ago||
(Carl from Obscura here)

Yeah we thought the randomized account number flow was an ingenious idea, so we did that and made the last digit a Verhoeff checksum to check for mistypes!

Though sometimes people forget to write the number down and... There's not much we can do.

mulmen 1 day ago|||
> there is a certain popular "pro-privacy" product beloved by many here

Please don’t speak in riddles. Just say what you mean.

t-writescode 1 day ago|||
They’re almost certainly referencing Signal.
duskdozer 1 day ago|||
Signal is worse, with phone numbers, no?
t-writescode 16 hours ago||
Oh good point. I should have read.
john_strinlai 1 day ago|||
for what purpose? there is nothing to be gained from pointing fingers, and takes the discussion in an even more unrelated direction.

although i guess people's curiosity is also dragging my comment in an unrelated direction anyways. lose-lose situation.

my main point is that the account number method is really nice, and a great selling point for such privacy-conscious products. not offering it in a privacy-conscious product is enough signal that it has made me choose not to purchase the product. that's the important bit, and where i was hoping to drive the conversation.

bityard 1 day ago|||
There is even less to be gained by issuing vague unactionable warnings and/or accusations...
john_strinlai 1 day ago||
it's not a warning or accusation...

this isn't some hidden feature you get caught with your pants down over. if you try to sign up to something and it doesn't offer an account number, you know that it doesn't offer an account number instantly.

no time wasted for you. it's not some nefarious plot by the company.

it's just a business decision. i was hoping to talk about the business decision of that particular sign up flow.

PunchyHamster 1 day ago||||
Incorrect. Pointing out bad products is a warning to other people to not waste time on it. We should be doing it more, not less.

I also have no idea what company/service you're talking about

mulmen 1 day ago|||
Because it creates confusion as proven by the responses mistakenly assuming that you were referring to proton.
john_strinlai 1 day ago||
and if i mention the company, the responses are all about the company instead of the feature.

next time i will just keep my thoughts to myself and we'll all be happy.

_bernd 1 day ago|||
Yeap :/
mulmen 1 day ago|||
You could have just ended your comment at:

> side note: i really wish more companies did the no email + randomized account number flow.

Everything you said after that added confusion and this tangent instead of the conversation you wanted to have.

dustyharddrive 1 day ago|||
In case you're alluding to a certain metasearch engine, they do not verify email addresses.
baal80spam 1 day ago|||
privacy <> anonymity

Proton VPN ensures privacy.

water-drummer 1 day ago|||
Privacy without anonymity is just privacy with a backdoor waiting to be unlocked.
john_strinlai 1 day ago|||
i am not talking about proton.
ignoramous 1 day ago||
> ... a certain popular "pro-privacy" product beloved by many here ...

If you're talking about Proton VPN, they do support "credential-less accounts" through their official apps, I believe? At least, on Android since 2024: https://www.androidpolice.com/proton-vpn-works-without-accou...

ysnp 20 hours ago|||
I am a little surprised people jump to Proton as beloved by HN. Proton has a lot of detractors and tends to be a target of some conspiracy/controversy. HN darling definitely suggests Kagi, who are not significantly impressive in terms of privacy-tech which I assumed was why pro-privacy was in air quotes.
john_strinlai 1 day ago|||
i am hesitant to really narrow it down, but it is not proton (i am a very early proton customer)
mulmen 1 day ago||
Then why comment at all? This is the danger of speaking in riddles.
btown 22 hours ago||
With a name like this, I’m reminded that privacy is only as good as your entry node being used widely/not being too “obscure.”

https://www.wnycstudios.org/podcasts/otm/articles/harvard-bo... is a good example: because the person making the threat was one of the few people on the campus network using Tor at the time the threatening emails were sent, he was identified as a suspect.

If an activity is traced to the Obscura network, and your network activity shows you as one of few people using it at the time - or, if you’re using it for completely unrelated things and are unlucky enough to have accessed at the same time someone else used the network for illegal activity - you could be at risk.

Flimm 22 hours ago|
I take your point, but I think Obscura's design would make this a bit more difficult. It would be difficult to distinguish Obscura users from regular Mullvad users. Firefox offers free VPN through Mullvad, so presumably it's not that distinctive to be using Mullvad's network.
osnxkwmxkwnd 1 day ago||
This sounds pretty neat, and I do dig the website, though I can’t help but think it’s an odd combination to have bitmap/pixelated fonts and graphics inside perfect squircles.

Seems like you guys have two distinct ideas of a visual identity completely at odds there. Shape contrast is nice and can be rather fun to play with, but it has to be handled with care. Right now it feels like the designer had a bunch of ideas and didn’t know how to bring them together in a cohesive identity.

Bonus point for the TRON reference at the end! “I fight for the users!”

dongcarl 1 day ago|
(Carl from Obscura here)

I'm a sucker for retro 8-bit graphics and fun mascots, so we went with that, but when we experimented with 8-bit for actual UI and long text we immediately found it to be super unusable and unreadable :-(

> Bonus point for the TRON reference at the end! “I fight for the users!”

Ah ofc the HN poster knows the reference :-) I've had it as my email signature since high school I think.

wahern 1 day ago||
> the first VPN that can’t log your activity and outsmarts internet censorship.

I guess they never heard of Zero Knowledge Systems: https://en.wikipedia.org/wiki/Zero_Knowledge_Systems

RustyRussell 1 day ago|
Pretty sure Carl has heard of them, having worked for Adam Back with me at Blockstream...
RandomGerm4n 1 day ago||
It would be cool if there were a way to use it the other way around. A Mullvad server as the entry point and an Obscura server as the exit point. My main problem with Mullvad right now is that its servers are blocked almost everywhere or generate an excessive number of Captchas. With other VPNs, that’s been much less of an issue so far. Alternatively, a residential proxy might be a good option as an optional exit point. One way to achieve this, for example, would be through a partnership with a regular ISP from which you could then borrow IP addresses.
c16 1 day ago|
> My main problem with Mullvad right now is that its servers are blocked almost everywhere or generate an excessive number of Captchas

Why not buy a Low End Box and run one of the WG Setup scripts to get you going? You'll lose the anonymity, but its your box, a clean IP, significantly cheaper than a commercial vpn.

RandomGerm4n 1 day ago||
Because anonymity is the reason I use a VPN in the first place. Without anonymity, I’d have to worry about getting a cease-and-desist letter if I downloaded a torrent, or having the police raid my house if I accidentally called a politician a dick.
ramblurr 1 day ago||
So like OHTTP but for UDP traffic? I suppose they are using MASQUE CONNECT-UDP?

They are careful to not exactly claim the same anonymity properties of Tor, though I think a lay reader will read that differently (ie, that they do have the same anonymity property as Tor).

That said being able to verify the inner wireguard conn to mullvad is nice. Of course you have to trust them that they aren't colluding with mullvad to share your identity/ip. But same goes for OHTTP.

dongcarl 1 day ago|
(Carl from Obscura here)

Actually it's WireGuard over QUIC Unreliable Datagrams!

See: https://obscura.com/blog/bootstrapping-trust/

ysnp 20 hours ago|
Is there anything like a generalised protocol which would allow network-privacy seekers to decide each hop? Apple iCloud+ Private Relay (2021), INVISV Relay (2022), Obscura VPN (2025, first of its kind) and so on are OK, but it would be nice if the user/customer could choose any two providers that didn't have business relationships with each other without mirimir-style proxy chaining.
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