A slippery cutting board is a recipe for disaster. If you'd like to keep your fingers intact, there's a really easy way to stabilise it.
For this method, all you need is a tea towel. Just run it under the sink, wring out as much water as you can, and lay it out underneath the cutting board. The added friction will keep it steady.
You can also use dry paper towels, but they're not quite as effective. For a few more tips to stay safe while dicing, check out the source link.
Five Ways to Keep Your Cutting Board from Slipping [The Kitchn]