Thousands of companies’ websites have been hit as a result of denial of service (DoS) attacks on their domain name registrar.
The Domain Name System (DNS) servers of two registrars have been targeted in the last few days.
The DNS servers of Network Solutions were hit by a DoS attack yesterday, resulting in performance degradation of customers’ websites.
Network Solutions now says it has overcome the problem and the service to its customers is back to normal.
In addition, last weekend, Joker.com was hit with a similar DoS attack which affected its customers. Joker said the attack was “massive”, and that it was “working hard” to tackle the problem.
Internet performance monitoring company Netcraft says over 550,000 domains are registered with German-based Joker. “Any of those domains that use Joker's DNS servers are likely to be affected,” said Netcraft.
DNS servers are used to look up and translate a company’s domain name in plain text and then convert it to a numeric Internet Protocol (IP) address, to enable surfers to connect to the site.