The "PCSX4" project is a long-standing hoax. Real emulation projects are typically open-source and hosted on platforms like GitHub; PCSX4 uses a polished, professional-looking website to trick users into downloading "installers" that require "verification keys" obtained through malicious links.
Files associated with PCSX4 are frequently flagged by antivirus software as Trojans or Adware . Legitimate PS4 Emulation Projects
For news on emulation, rely on community-trusted sites like RPCS3.net or Emulation General Wiki .