fun trick: if someone gives a hosted LLM a skill that lets it fetch web pages (directly, not through some third party scraper service) and it's hosted on AWS, you can often trick it into fetching data from the AWS instance metadata server (IMDS) at 169.254.169.254 / [fd00:ec2::254]. the higher end models tend to refuse if you give the IP, but you can just spin up a domain with A/AAAA records pointing at that IP and request that instead. if IMDSv1 isn't disabled you can get secrets out of it.
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Graham Sutherland -> EMF 📞8087 (gsuberland@chaos.social)'s status on Thursday, 21-May-2026 04:44:34 JST
Graham Sutherland -> EMF 📞8087
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../kajer/. (kajer@infosec.exchange)'s status on Sunday, 24-May-2026 16:16:41 JST
../kajer/.
fun times with https://www.man7.org/linux/man-pages/man3/inet.3.html
169.254.169.254 can also be -
2852039166
0xA9FEA9FE
a9.fe.a9.fe
or
251.376.251.376just incase someone tried to be clever and prohibit queries about 169.254 addresses
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Ryan Castellucci (they/them) :nonbinary_flag: (ryanc@infosec.exchange)'s status on Sunday, 24-May-2026 16:16:57 JST
Ryan Castellucci (they/them) :nonbinary_flag:
@kajer @gsuberland you can mix and match formats across octets for some fucking reason
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