Systems and methods are provided for protecting a plurality of electronic devices via a control server. The control server, for example, can receive one or more indications that a first electronic device is considered malicious and add it to a security threat list. Then the control server can communicate the security threat list to others of the electronic devices, networked for communication with each other, such that the other electronic devices reject all communication from any device listed on the security threat list. Next, upon receiving indication from an approved security patch-providing source that a security patch has been applied to the first electronic device, the control server can remove the first electronic device from the security threat list and communicate the updated security threat list to the other electronic devices indicating that it is safe for these electronic devices to again receive communication from the first electronic device.