A system for restricting access to a web resource, the system comprising: at least one processor circuit; at least one memory that stores program code configured to be executed by the at least one processor circuit, the program code comprising: a website access tracker configured to obtain website access information by monitoring accesses to a plurality of websites, the website access information including, for each access, a network identifier of an access requestor, an identifier of a website being accessed, and an access time associated with the access; a web robot detector configured to classify a particular access requestor as a web robot, based at least in part on the website access information; and a web resource enforcer configured to: receive a request to permit access to the web resource by the particular access requestor; and in response to receiving the request to permit access to the web resource by the particular access requestor, perform: determine whether the particular access requestor is classified as a web robot; if the particular access requestor has been classified as a web robot, parse web resource information to determine whether the requested web resource corresponds to an excluded web resource, wherein the web resource information identifies a file comprising a listing of excluded web resources; and if the particular access requestor has been classified as a web robot and if the requested web resource is an excluded web resource, prevent the particular access requestor from accessing the web resource. at least one processor circuit; at least one memory that stores program code configured to be executed by the at least one processor circuit, the program code comprising: a website access tracker configured to obtain website access information by monitoring accesses to a plurality of websites, the website access information including, for each access, a network identifier of an access requestor, an identifier of a website being accessed, and an access time associated with the access; a web robot detector configured to classify a particular access requestor as a web robot, based at least in part on the website access information; and a website access tracker configured to obtain website access information by monitoring accesses to a plurality of websites, the website access information including, for each access, a network identifier of an access requestor, an identifier of a website being accessed, and an access time associated with the access; a web robot detector configured to classify a particular access requestor as a web robot, based at least in part on the website access information; and a web resource enforcer configured to: receive a request to permit access to the web resource by the particular access requestor; and in response to receiving the request to permit access to the web resource by the particular access requestor, perform: determine whether the particular access requestor is classified as a web robot; if the particular access requestor has been classified as a web robot, parse web resource information to determine whether the requested web resource corresponds to an excluded web resource, wherein the web resource information identifies a file comprising a listing of excluded web resources; and if the particular access requestor has been classified as a web robot and if the requested web resource is an excluded web resource, prevent the particular access requestor from accessing the web resource. determine whether the particular access requestor is classified as a web robot; if the particular access requestor has been classified as a web robot, parse web resource information to determine whether the requested web resource corresponds to an excluded web resource, wherein the web resource information identifies a file comprising a listing of excluded web resources; and if the particular access requestor has been classified as a web robot and if the requested web resource is an excluded web resource, prevent the particular access requestor from accessing the web resource.