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Subdomain Takeover

What is a subdomain takeover vulnerability?

The subdomain takeover vulnerability provides hacker a chance to replace your subdomain with a fake or duplicate domain name to jeopardize your integrity identity and divert a traffic at the hacker's end.

A hacker can use your unused space and replace with a fake web-page to steal Your traffic. A hacker finds your weak points to attack and this is also one of the areas that generally a management does not pay attention to protect.

How does a hacker misuse the vulnerability of your domain names that are connected with your primary domain names?

A domain name points to a DNS server by three different ways primary domain name, add-on domain name, parked domain name and a subdomain name.

The characteristics of each domain name are defined below:

Primary domain name: It is a root domain name. Primary domain name is a name of a website, same as your telephone number. A domain name connects to your DNS server. A DNS server recognizes a website with an I.P address (Internet Protocol) or a domain name, both are interfaced to each other.

Add-on domain name: Add-on domain name is a secondary domain name, but it is treated same as the primary domain name. An add-on domain name is an additional website under a primary domain name with the unique content.

Generally, an add-on domain name is bought for the important services to redirect a customer on a related subject, rather a strange page. An add-on domain name is one of a characteristics of a good navigation website. For example; a customer should be directly re-directed to a landing page of a service “sales tax registration”, rather land on an index page to waste time of a customer.

Subdomain name : It is a part of a primary domain name. A subdomain name is always used prior to a root or a primary domain name, and a subdomain is used to create an extension of an existing website, rather creating a new website.

Parked domain name: A parked domain name is derived from “parking”, it is usually reserved to use for a future use, such as, to sell or develop additional functions.

Additionally, it is also used to give the user a facility to use a shorter domain name, rather a long domain name. For example; is a little long to type and remember, therefore a domain name is reserved as a parked domain name that does not have an additional website or unique content. It is redirected to the index page of A user can either type or to reach on the same destination.

How to protect from a subdomain takeover?

  1. Make a practice to check the subdomain name connections to the primary domain name time to time. Especially, when there is any changes were made in the server's end or a migration process.
  2. Remove a link of a subdomain immediately, if it is not in use to protect from a hacking.



Retail Food Store License for New York

Any Retail Food Store within the New York State where food and food products are offered to the consumer are required to have retail food license
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