Boil the eggs. Bring water to boil in a pot, then gently drop the four eggs in the boiling water. Set timer to 10 minutes, then take the eggs out immediately and place in a bowl of icy cold water to cool.
While the eggs are boiling, chop the pickles, dill and green onion.
Once the eggs are cooled, peel and dice them.
Place diced eggs, pickles, dill, green onions, mayo, yogurt, mustard, salt and pepper in a medium bowl.
Mix with a spoon or a rubber spatula until combined. Taste and add more salt and pepper, if needed. For a creamier salad, add an additional tablespoon of Greek yogurt.
Serve immediately or store in the fridge in an airtight container.