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Supercookie: Browser Fingerprinting via Favicon

github.com Software & code Software projects Security & privacy Candidate
Screenshot of github.com captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 3 calendar years, with breakout response in 2 of them.

submissions
3
submitters
3
observed span
2021–2025
peak thread · 100 comments
402 pts
latest 20+ return · 2025-11-16
357 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Link to discussion of the paper (55 comments): https://news.ycombinator.com/item?id=25868742

est31·402-point thread·

At some point we need actual consequences for sites that intentionally hide their tracking. It should be criminal. It is stalking and has real world consequences. Just because an exploit exists doesn't mean it should be used. That logic is like saying it is OK to break into a house because the lock on the door was weak. If we don't get real protections, at what point does it become justified to go offensive against sites that exploit things like…

The same really applies to all external resources, including anything hosted on CDNs.

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
762

reference only — not used in Hall rules or ranking

Total comments
182

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2021-02-07Supercookie: Browser Fingerprinting via FaviconFirst breakout · Best threadqtoxic40281
2023-11-01Supercookieomarfarooq31
2025-11-16Supercookie: Browser Fingerprinting via Favicon (2021)Latest 20+ point returnvxvrs357100