Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/_common/Abstractions/NadekoRandom.cs

@@ -0,0 +1,67 @@
+#nullable disable
+using System.Security.Cryptography;
+
+namespace Nadeko.Common;
+
+public sealed class NadekoRandom : Random
+{
+    private readonly RandomNumberGenerator _rng;
+
+    public NadekoRandom()
+        => _rng = RandomNumberGenerator.Create();
+
+    public override int Next()
+    {
+        var bytes = new byte[sizeof(int)];
+        _rng.GetBytes(bytes);
+        return Math.Abs(BitConverter.ToInt32(bytes, 0));
+    }
+    
+    /// <summary>
+    /// Generates a random integer between 0 (inclusive) and
+    /// a specified exclusive upper bound using a cryptographically strong random number generator.
+    /// </summary>
+    /// <param name="maxValue">Exclusive max value</param>
+    /// <returns>A random number</returns>
+    public override int Next(int maxValue)
+        => RandomNumberGenerator.GetInt32(maxValue);
+
+    /// <summary>
+    /// Generates a random integer between a specified inclusive lower bound and a
+    /// specified exclusive upper bound using a cryptographically strong random number generator.
+    /// </summary>
+    /// <param name="minValue">Inclusive min value</param>
+    /// <param name="maxValue">Exclusive max value</param>
+    /// <returns>A random number</returns>
+    public override int Next(int minValue, int maxValue)
+        => RandomNumberGenerator.GetInt32(minValue, maxValue);
+
+    public long NextLong(long minValue, long maxValue)
+    {
+        if (minValue > maxValue)
+            throw new ArgumentOutOfRangeException(nameof(maxValue));
+        if (minValue == maxValue)
+            return minValue;
+        var bytes = new byte[sizeof(long)];
+        _rng.GetBytes(bytes);
+        var sign = Math.Sign(BitConverter.ToInt64(bytes, 0));
+        return (sign * BitConverter.ToInt64(bytes, 0) % (maxValue - minValue)) + minValue;
+    }
+
+    public override void NextBytes(byte[] buffer)
+        => _rng.GetBytes(buffer);
+
+    protected override double Sample()
+    {
+        var bytes = new byte[sizeof(double)];
+        _rng.GetBytes(bytes);
+        return Math.Abs((BitConverter.ToDouble(bytes, 0) / double.MaxValue) + 1);
+    }
+
+    public override double NextDouble()
+    {
+        var bytes = new byte[sizeof(double)];
+        _rng.GetBytes(bytes);
+        return BitConverter.ToDouble(bytes, 0);
+    }
+}