The old internet is still here, what's changed is our expectations. Some great positive thoughts this morning by @tylergaw
Static + dynamic analysis of Signal's APK. The good news first: Signal is genuinely exceptional.
Rust core (libsignal_jni.so), post-quantum hybrid Double Ratchet (Kyber-1024 + X25519), Direct ByteBuffers with immediate zeroing after PIN/username hashing, Intel SGX attestation for SVR — MREnclave verification means even a compromised Signal server can't extract your PIN hash.
But two things stood out:
1. Firebase is always there. Google receives IP + notification timestamps regardless of message content. If you need metadata privacy, Signal still leaks presence data to Google's infrastructure.
2. Certificate revocation endpoints hit http://g.symcd.com in plaintext. An ISP or state-level observer can fingerprint Signal usage from DNS queries and HTTP traffic to those CAs — without touching message content.
Conclusion: strongest crypto engineering in consumer messaging. The attack surface isn't the cryptography. It's the operational dependencies.
Soon the full analysis
#infosec #AndroidSecurity #Signal #privacy #ReverseEngineering #postquantum #mobileforensics
Mein Interview für die @AG_KRITIS bei DLF Hintergrund zu:
#Palantir in den USA: Ein Schreckensszenario für Deutschland?
"Um Migranten aufzuspüren, nutzt die US-Einwanderungsbehörde Software von Palantir. Das befeuert die Kritik an der Software, die auch in Deutschland zum Einsatz kommt – weil sie zwar umstritten ist, aber bei vielen Experten als unverzichtbar gilt."
https://www.deutschlandfunk.de/palantir-in-den-usa-ein-schreckensszenario-fuer-deutschland-100.html
elf Millionen Menschen ohne Strom