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Use a virtual machine if it's a computer virus, and never open them on your physical machine. As a pre-caution, download them on your VM.
If it's a APK file, use a APK Emulator.
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Pynx Technologies is a company that has cybersecurity tools, pentesting tools, etc. It sells at the moment SSkullzv2 and Skullzv3.
Root Password Phishing (Bash) Alias Command Version Instructions by Lynx