Replies

Glyphglyph@mastodon.social
Oct 14, 2026, 11:51 PM
@mcc bad news: it's computers _all_ the way down
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The Orange Themetheorangetheme@en.osm.town
Oct 14, 2026, 11:52 PM
@glyph @mcc
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Glyphglyph@mastodon.social
Oct 14, 2026, 11:52 PM
@mcc I guess the corollary here is that you cannot fall _out_ of the computer tree. you can only fall _down_ the computer tree
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Jennifer Kayla | Theogrin 🦊theogrin@chaosfem.tw
Oct 14, 2026, 11:55 PM
@glyph @mcc
So that's how ../.. exploits work.
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Glyphglyph@mastodon.social
Oct 14, 2026, 11:57 PM
@theogrin @mcc okay so the implication if you are subject to traversal attacks is that you can merely fall _across_ the computer tree
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Jess👾JessTheUnstill@infosec.exchange
Oct 15, 2026, 12:04 AM
@glyph @mcc I mean, at SOME point you're down to transistors on the CPU. Or maybe the power control circuits on the power supply.
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viqviq@hackerspace.pl
Oct 15, 2026, 12:06 AM
@JessTheUnstill
And down the compute rabbit computer rabbit hole we go.
@glyph @mcc
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Jess👾JessTheUnstill@infosec.exchange
Oct 15, 2026, 12:08 AM
@viq @glyph @mcc I once made a colleague frustrated when I said "Virtual machines are just time slicing a mainframe on steroids", but he couldn't refute me.
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Glyphglyph@mastodon.social
Oct 15, 2026, 12:12 AM
@JessTheUnstill @viq @mcc the only reason I would disagree is with "on steroids", it seems exactly the same as timesharing
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Krzysztof Sakrejda 🏳️‍⚧️ 🏴‍☠wronglang@bayes.club
Oct 15, 2026, 1:05 AM
@glyph @JessTheUnstill @viq @mcc at least with time sharing they're usually more honest about what a CPU is
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Glyphglyph@mastodon.social
Oct 15, 2026, 1:11 AM
@wronglang @JessTheUnstill @viq @mcc I am unqualified to judge this statement! I am assuming this is some kind of swipe at whatever a "vCPU" is, but could you say more?
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viqviq@hackerspace.pl
Oct 15, 2026, 3:37 AM
@glyph
I assume notorious overcommitment of VMs versus what resources the host has.
@wronglang @JessTheUnstill @mcc
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Krzysztof Sakrejda 🏳️‍⚧️ 🏴‍☠wronglang@bayes.club
Oct 15, 2026, 11:02 AM
@glyph @JessTheUnstill @viq @mcc actually most of my experience is with SLURM clusters where if you're getting crap performance because the other part of a machine is being tortured somehow (or just failing) you have visibility into that, so the whole "vCPU" things is aesthetically offensive. Vendors patronize people by listing cost per vCPU when you have to benchmark what that means across vendors anyway (and benchmark results aren't fixed). Huge waste of time.
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Cassandra has had an adventurexgranade@wandering.shop
Oct 15, 2026, 12:00 AM
@mcc mood
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James Mitchellwotsac@mastodon.social
Oct 15, 2026, 1:37 AM
@mcc i've got a bed in my office like that
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Hugo Millsdarkling@mstdn.social
Oct 15, 2026, 8:59 AM
@mcc And when you've reached the bottom of the computer tree, you're at a leaf node.
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