Symantec and Kaspersky Lab last week separately announced the discovery of a highly sophisticated advanced persistent threat that had eluded security researchers for at least five years. A previously unknown group called “Strider” has been using Remsec, an advanced tool that seems to be designed primarily for spying. Its code contains a reference to Sauron, the main villain in The Lord of the Rings, according to Symantec. The APT spyware is called “ProjectSauron” or “Strider” in Kaspersky’s report.