Fredrik Dahlgren
@fegge.bsky.social
260 followers
260 following
94 posts
Cryptography and static analysis @ Trail of Bits
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Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Virtual Machines render fonts. It’s kind of insane.
TrueType has its own instruction set, memory stack, and function calls.
You can debug it like assembly. It’s also exploitable:
TrueType has its own instruction set, memory stack, and function calls.
You can debug it like assembly. It’s also exploitable:
In 2023, Signal was the first mainstream messenger to enable post-quantum cryptography. We’re still ahead of the (elliptical) curve, implementing a new hybrid PQ ratchet ensuring Forward Secrecy & Post-Compromise Security even in a post-quantum world. signal.org/blog/spqr/
Signal Protocol and Post-Quantum Ratchets
We are excited to announce a significant advancement in the security of the Signal Protocol: the introduction of the Sparse Post Quantum Ratchet (SPQR). This new ratchet enhances the Signal Protocol’s...
signal.org
Reposted by Fredrik Dahlgren
Strömberg
@cs1891.bsky.social
· 29d
Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Matthew Green
@matthewdgreen.bsky.social
· Sep 17
Reposted by Fredrik Dahlgren
Reposted by Fredrik Dahlgren
Fredrik Dahlgren
@fegge.bsky.social
· Sep 14
Geedge & MESA Leak: Analyzing the Great Firewall’s Largest Document Leak
The Great Firewall of China (GFW) experienced the largest leak of internal documents in its history on Thursday September 11, 2025. Over 500 GB of source code, work logs, and internal communication re...
gfw.report
Reposted by Fredrik Dahlgren