Is this image AI? the reflections in the window, the perfect snowam, that film grain filter… it looks too perfect to me.

Just purchased a server license (for life). Not only is this update jam packed full of nice features, but a lot of their updates are. I’ve been self-hosting it (on a VPS) for the past year and it’s about time I supported them

Thanks for the question!

As long as caches have existed, very similar styles of side channels have been demonstrated since the late 90s. A lot of the terminology we use (flush+reload, flush+flush…) are attack techniques that have been already demonstrated on CPU caches, and these demonstrations are at least a decade old.

Flush+Reload: www.usenix.org/conference/…/yarom

Flush+Flush: gruss.cc/files/flushflush.pdf

Invalidate+Compare (GPU caches, 2024): www.usenix.org/conference/…/zhang-zhenkai

My colleague, Hannes, found similar styles of attacks existed with the Linux DNS cache too: hannesweissteiner.com/pdfs/dmt.pdf (also published at NDSS 26!)

The one really big difference between the page-cache side channel and other side channels is the “monitor” primitive. There are methods that the OS provides which directly report the presence of a page in cache. These are syscalls like mincore (mitigated in 2019), preadv2 + rwf_nowait (unmitigated), and cachestat (mitigated in 2025).

With these syscalls, we don’t even have to rely on timing information (is page access fast -> cached; is it slow -> not cached). These syscalls really set the page-cache side channel apart because you can nondestructively figure out whether a page is in cache.

The page-cache side channel was first explored in 2019. It was explored on Linux but also on Windows by my advisor et al.: gruss.cc/files/pagecacheattacks.pdf

Hope this answers your question :D

Thanks for cross-posting and tagging me!

CCC just wrapped up two days ago. events.ccc.de/congress/2025/infos/startpage.html

This happens every year with CCC, Defcon, and Blackhat. There are always interesting talks and you get a slew of posts from interested people.

Thank you for the comment!

Most of the beautiful hardwork was done by the store - I just pointed, zoomed, focused, and shot. It doesn’t feel like I did much to the already existing grandeur.

I haven’t seen anyone here mention Psyllium husk. I bought 450 capsules on Amazon (ew I know) and it’s been a game changer for me. Seriously.

www.amazon.de/…/B0D3F62D9M

Source: geekculture.com/joyoftech/joyarchives/2212.html