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diff --git a/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestMaliciousData.java b/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestMaliciousData.java
new file mode 100644
index 000000000..f1bd1dcac
--- /dev/null
+++ b/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestMaliciousData.java
@@ -0,0 +1,123 @@
+package org.simantics.databoard.tests;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import junit.framework.Assert;
+
+import org.junit.Test;
+import org.simantics.databoard.Bindings;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.serialization.Serializer;
+
+/**
+ *
+ * @author Toni Kalajainen <toni.kalajainen@iki.fi>
+ */
+public class TestMaliciousData {
+
+	public @Test void testArray() throws Exception {
+		
+		
+		Binding b = Bindings.getBinding(List.class, Integer.class);
+		Serializer s = Bindings.getSerializer(b);
+
+		// negative array length
+		try {
+			byte[] data = new byte[] {-1, -1, -1, -1, 0, 1, 2, 3, 4};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on negative length array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// too big array
+		try {
+			byte[] data = new byte[] {10, 10, 10, 10, 0, 1, 2, 3, 4};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on too long array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// OK Data
+		try {
+			byte[] data = new byte[] {0, 0, 0, 1, 0, 1, 2, 3};
+			s.deserialize(data);
+		} catch (IOException e) {
+			Assert.fail("Deserialization did not work");
+		}
+		
+	}
+	
+	public @Test void testBooleanArray() throws Exception {
+		
+		
+		Binding b = Bindings.BOOLEAN_ARRAY;
+		Serializer s = Bindings.getSerializer(b);
+
+		// negative array length
+		try {
+			byte[] data = new byte[] {-1, -1, -1, -1, 0, 1, 2, 3, 4};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on negative length array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// too big array
+		try {
+			byte[] data = new byte[] {10, 10, 10, 10, 0, 1, 2, 3, 4};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on too long array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// OK Data
+		try {
+			byte[] data = new byte[] {0, 0, 0, 1, 1};
+			s.deserialize(data);
+		} catch (IOException e) {
+			Assert.fail("Deserialization did not work");
+		}
+		
+	}
+
+	public @Test void testMap() throws Exception {
+		
+		
+		Binding b = Bindings.getBinding(Map.class, Integer.class, Integer.class);
+		Serializer s = Bindings.getSerializer(b);
+
+		// negative array length
+		try {
+			byte[] data = new byte[] {-1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on negative length array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// too big array
+		try {
+			byte[] data = new byte[] {10, 10, 10, 10, 0, 1, 2, 3, 4};
+			s.deserialize(data);
+			Assert.fail("Deserialization did not fail expectedly on too long array");
+		} catch (IOException e) {
+			// Expected exception
+		}
+
+		// OK Data
+		try {
+			byte[] data = new byte[] {0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0};
+			s.deserialize(data);
+		} catch (IOException e) {
+			Assert.fail("Deserialization did not work");
+		}
+		
+	}
+	
+	
+}