Parallels Desktop 10 was engineered for OS X Yosemite and OS X El Capitan. It does not possess the architecture required to run on modern macOS versions like Ventura, Sonoma, or Sequoia.
Legacy software does not receive updates. Running an unpatched hypervisor creates an unmonitored bridge between your host Mac and the guest Windows OS, leaving your system vulnerable to network exploits. Legal and Ethical Implications