The file is safe if downloaded directly from the official, verified FitGirl source. However, third-party copycat sites often inject malware into these files. If your antivirus flags a file downloaded from an unofficial mirror site, quarantine or delete it immediately. Common Issues and How to Fix Them
To save download bandwidth, repackagers separate non-essential multiplayer components from the core single-player game data. The prefix stands for FitGirl, while "optional-psn-services" indicates that the file contains the data files required specifically for Sony's PSN overlay software. Why is this File Considered "Optional"? fg-optional-psn-services.bin