Underground forums and dark web marketplaces increasingly use exotic country-code top-level domains (ccTLDs) like .st, .to, and .su for anonymity and evasion tactics.
Exotic ccTLDs offer benefits like low cost, rapid registration, and anonymity, making them attractive to illicit communities.
These exotic TLDs provide takedown resistance, registration anonymity, redundancy, and branding flexibility, aiding in forum operators' OPSEC.
Case studies of forums like RaidForums, BreachForums, and Nulled demonstrate both the successes and vulnerabilities of using exotic ccTLD strategies.
Exotic ccTLD strategies face vulnerabilities like public WHOIS exposure, geopolitical shifts, registrar compliance issues, and a false sense of security.
Comparison between Tor's .onion addresses and exotic ccTLDs shows that while both offer anonymity, .onion addresses provide stronger encryption and censorship resistance.
Future decentralized naming systems like ENS and Handshake may provide enhanced censorship resistance and privacy but face challenges in adoption and integration.
Exotic ccTLDs are essential for underground forums' OPSEC but come with weaknesses that cybersecurity defenders should monitor while considering decentralized naming systems for the future.