DNS Rebinding and NXDOMAIN Hijacking: Two Overlooked DNS Attacks (opens in new tab)

Most DNS attacks people know about involve changing where a domain points: cache poisoning, hijacking, subdomain takeover. But two of the more insidious DNS attack techniques work differently. DNS rebinding turns a victim's own browser into a tool for reaching systems it should never be able to touch. NXDOMAIN hijacking exploits the moment when a domain doesn't exist, turning "not found" into an opportunity for manipulation. Neither is as widely understood as it should be, and both remain rel...