Abstract: Systems and methods are disclosed for providing security from malicious software. The disclosed systems and methods may include maintaining a malicious host database, the malicious host database containing a malicious host name corresponding to a malicious host. Furthermore, the disclosed systems and methods may include receiving, from a client, a service request including a first host name and querying the malicious host database to determine if the first host name corresponds to the malicious host name. Moreover, the disclosed systems and methods may include returning, to the client, a first address if it was determined that the first host name corresponds to the malicious host name.