this post was submitted on 07 Aug 2026
36 points (100.0% liked)

Technology

87598 readers
3637 users here now

This is a most excellent place for technology news and articles.

Our Rules

  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots

founded 3 years ago
MODERATORS
L3s@lemmy.world
enu@lemmy.world
technopagan@lemmy.world
L4s@lemmy.world
L3s@hackingne.ws
36
Spectre is Back: CPU Mitigations Found to Be Ineffective (www.csail.mit.edu)
submitted 2 weeks ago* (last edited 2 weeks ago) by beep@piefed.world to c/technology@lemmy.world
2 comments fedilink hide all child comments
 

cross-posted from: https://piefed.world/c/tech/p/1320015/spectre-is-back-cpu-mitigations-found-to-be-ineffective

Modern processors are fast in part because they guess. Rather than waiting to find out which way a program will branch, a chip predicts the likely path and races ahead. When the guess is right, time is saved. When it's wrong, the work is discarded, but traces of it linger, and since the Spectre vulnerability was disclosed in 2018, attackers have known how to read those traces to pull secrets out of memory they should never see.

you are viewing a single comment's thread
view the rest of the comments
[–] LodeMike@lemmy.today 6 points 2 weeks ago

TLDR: sceptre but really inefficent.