TLDR InfoSec · STRATEGIES & TACTICS

SSH KEYSTROKE OBFUSCATION BYPASS

crzphil.github.io11 min read

Summary from the TLDR InfoSec newsletter

OpenSSH 9.5 added keystroke timing obfuscation to prevent traffic analysis attacks. The feature hides keystroke timings and floods chaff packets to obscure real keystrokes. This blog post walks through how analyzing packet sizes can reveal keystrokes and their types, aiding in traffic analysis.