Tcp-Fingerprinting

Auth on TCP, open on UDP: the SOCKS5 relays scanners can't see

Final version of the SOCKS5 open-UDP-relay teardown: de-quantified the scan-list phrasing, aligned a log comment to first-person voice, and thinned one forward-reference scaffold, with all tables, numbers, RFC references, and the “signals, not weapons” defensive framing preserved verbatim.

Coordinated disclosure: CCTV cameras selling their owners' bandwidth

How I passively fingerprinted hacked Dutch CCTV cameras being resold as residential proxy exit nodes — and reported them to NCSC-NL without ever touching a single box.