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Domain takeovers or subdomain takeovers occur when DNS records are not properly updated or removed when a service is moved or shut down. Best case the domain just doesn’t work anymore. Worst case a threat actor can leverage 3rd party services to serve malicious content using your domain / brand.
Currently, Firebase protects against domain takeovers by requiring each domain to have a unique CNAME or TXT record on the affected domain.
Currently, Squarespace protects against domain takeovers by requiring each domain to have a unique CNAME record on the affected domain.
