A microblog is a type of blog in which users can post small pieces of digital content like pictures, video or audio on the Internet. These posts, called microposts, are immediately available to a small community or public. It differs from a blog due to its smaller content. Micoblogging is highly popular among users due to its portability and...
A denial-of-service (DoS) is any type of attack where the attackers (hackers) attempt to prevent legitimate users from accessing the service. In a DoS attack, the attacker usually sends excessive messages asking the network or server to authenticate requests that have invalid return addresses. The network or server will not be able to find the return address of the attacker when sending the authentication approval, causing the server to wait before closing the connection. When the server closes the connection, the attacker sends more authentication messages with invalid return addresses. Hence, the process of authentication and server wait will begin again, keeping the network or server busy.
A DoS attack can be done in a several ways. The basic types of DoS attack include:
Another variant of the DoS is the smurf attack. This involves emails with automatic responses. If someone emails hundreds of email messages with a fake return email address to hundreds of people in an organization with an autoresponder on in their email, the initial sent messages can become thousands sent to the fake email address. If that fake email address actually belongs to someone, this can overwhelm that person's account.
DoS attacks can cause the following problems:
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