sd

Identification of “sd” (from fucksheep.org/~sd/warez/semtex.c)

What can be said with high confidence

• In the URL http://fucksheep.org/~sd/warez/semtex.c, the segment ~sd is the conventional form of a user home-directory on a Unix-like web server (often “public_html” under a local account named sd).
• Therefore, “sd” is almost certainly the username (account name) on the server fucksheep.org, not necessarily the person’s real name.

What cannot be determined from available evidence

• I cannot reliably identify who (which real-world person or organization) “sd” is from the information provided.
• I attempted to open the page directly, but access was blocked as unsafe by the browsing system, and general web search results did not provide an attributable identity for that ~sd account.

How you could investigate further (if you have permission)

• Check historical archives (e.g., web archives) for that specific URL/path and look for:
  • a name in headers/comments in semtex.c
  • an email address, PGP key ID, or handle used consistently across pages
• Look up host ownership:
  • WHOIS / domain registration history for fucksheep.org
  • DNS history / passive DNS (may reveal related hostnames)
• Search for unique strings:
  • If you can obtain the file contents, search distinctive identifiers (author tags, nicknames, comments) rather than the generic username sd.

Bottom line

“sd” appears to be the server account name behind ~sd on fucksheep.org, but the real identity of that account holder cannot be confirmed from the provided URL alone.