CSC, an enterprise-class domain registrar and world leader in mitigating domain and domain name system (DNS) threats, today released its “Subdomain Hijacking Vulnerabilities Report” that reviewed over 440,000 DNS records and found that over 21% of DNS records point to content that does not resolve, leaving many companies vulnerable to subdomain hijacking. Additionally, over 277,000 (63%) show error status codes such as “404 not found” or “502 bad gateway.”