Step 1 Open up a new image any size and create some black text with a font to your liking;
Step 2 Add these layer-styles to it;
Step 3 Duplicate the text-layer, clear the layer-styles and press CTRL+I;
Step 4 Set the blending-mode to overlay;
Step 5 Create a new layer above the white text and go to Filter>Renders>Clouds;
Go to Filter>Render>Difference Clouds and press CTRL+F several times (aprox. 6);
Step 6 Go to Filter>Texture>Grain and add these settings;
Step 7 Now go to Filter>Noise>Add Noise and add these settings;
Step 8 Change the blending-mode to overlay and select the text, press CTRL+I, then press delete on the noise layer!