this post was submitted on 03 Sep 2024
205 points (99.5% liked)

Privacy Guides

16874 readers
2 users here now

In the digital age, protecting your personal information might seem like an impossible task. We’re here to help.

This is a community for sharing news about privacy, posting information about cool privacy tools and services, and getting advice about your privacy journey.

You can subscribe to this community from any Kbin or Lemmy instance:

Learn more...

Check out our website at privacyguides.org before asking your questions here. We've tried answering the common questions and recommendations there!

Want to get involved? The website is open-source on GitHub, and your help would be appreciated!

This community is the "official" Privacy Guides community on Lemmy, which can be verified here. Other "Privacy Guides" communities on other Lemmy servers are not moderated by this team or associated with the website.

Moderation Rules:

  1. We prefer posting about open-source software whenever possible.
  2. This is not the place for self-promotion if you are not listed on privacyguides.org. If you want to be listed, make a suggestion on our forum first.
  3. No soliciting engagement: Don't ask for upvotes, follows, etc.
  4. Surveys, Fundraising, and Petitions must be pre-approved by the mod team.
  5. Be civil, no violence, hate speech. Assume people here are posting in good faith.
  6. Don't repost topics which have already been covered here.
  7. News posts must be related to privacy and security, and your post title must match the article headline exactly. Do not editorialize titles, you can post your opinions in the post body or a comment.
  8. Memes/images/video posts that could be summarized as text explanations should not be posted. Infographics and conference talks from reputable sources are acceptable.
  9. No help vampires: This is not a tech support subreddit, don't abuse our community's willingness to help. Questions related to privacy, security or privacy/security related software and their configurations are acceptable.
  10. No misinformation: Extraordinary claims must be matched with evidence.
  11. Do not post about VPNs or cryptocurrencies which are not listed on privacyguides.org. See Rule 2 for info on adding new recommendations to the website.
  12. General guides or software lists are not permitted. Original sources and research about specific topics are allowed as long as they are high quality and factual. We are not providing a platform for poorly-vetted, out-of-date or conflicting recommendations.

Additional Resources:

founded 2 years ago
MODERATORS
jonah@lemmy.one
dngray@lemmy.one
freddy@lemmy.one
ninchuka@lemmy.one
205
YubiKeys are vulnerable to cloning attacks thanks to newly discovered side channel (arstechnica.com)
submitted 2 months ago by BrikoX@lemmy.zip to c/privacyguides@lemmy.one
33 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] smeg@feddit.uk 92 points 2 months ago (5 children)

The attacker would need physical possession of the YubiKey, Security Key, or YubiHSM, knowledge of the accounts they want to target and specialized equipment to perform the necessary attack. Depending on the use case, the attacker may also require additional knowledge including username, PIN, account password, or authentication key.

The attacks require about $11,000 worth of equipment and a sophisticated understanding of electrical and cryptographic engineering. The difficulty of the attack means it would likely be carried out only by nation-states or other entities with comparable resources and then only in highly targeted scenarios. The likelihood of such an attack being used widely in the wild is extremely low.

Given this massive caveat I'd almost call that headline misleading

[–] Hirom@beehaw.org 11 points 2 months ago* (last edited 2 months ago) (1 children)

Knowledge of the account is an obvious caveat. Yubikey-based MFA is an added layer of protection for accounts, so any kind of attack against MFA assumes the attacker already knows which account to target.

It's like saying "our door lock is flawed, but the attacker would need to have knowledge of the door".

The cost and complexity is what's noteworthy and is more relevant. Although attack cost and complexity usuallu goes down with advances in tooling and research. So it may be a good idea to plan a progressive retirement of affected keys.

[–] Zwiebel 1 points 2 months ago* (last edited 2 months ago)

"Our door lock is flawed, but the attacker would need physical access to the key"

load more comments (3 replies)