KnowBe4 offers the RanSim Ransomware Simulator. I noticed there was need for a dedicated thread to discuss RanSim and RanSim test results. This is the thread to do so. About RanSim: - RanSim offers a harmless simulation of a real ransomware infection. - It does not use any of your own files. - Currently, it tests 10 types of infection scenarios. - You can just download the installer and run it. - For detailed information, please see the RanSim documentation. N.B. If security software blocks or stops RanSim.exe, Launcher.exe and/or RanSimSetup.exe, RanSim does not run as intended. You may need to whitelist those three RanSim exe in your security software. See documentation, FAQ, My antivirus flagged RanSim.exe, Launcher.exe, or RanSimSetup.exe as malicious: N.B. There is a bug in RanSim (v18.104.22.168 - v22.214.171.124) that shows "Vulnerable" for the InsideCryptor test scenario result when testing HitmanPro.Alert, while HitmanPro.Alert does protect against InsideCryptor. The HitmanPro.Alert developers contacted KnowBe4 regarding this bug. Also see Erik Loman's posts #33 and #95 regarding this matter. N.B. Your anti-ransomware solution may or perhaps may not stop the Streamer test scenario. Don't worry about that, as that is not very relevant, as Streamer puts encrypted data into a single archive file, but only deletes the original files, so those can be recovered using recovery software. Well, that was the case up to and including RanSim v126.96.36.199. With RanSim v188.8.131.52, KnowBe4 may have changed Streamer's behavior slightly by touching the originals (as normal ransomware would). See Erik Loman's post #95.