When it comes to securing a countertop, there are a few different options that you can choose from. The most common way to secure a countertop is by using countertop brackets. Countertop brackets are L-shaped brackets that are installed underneath the countertop. They come in a variety of sizes and styles, so you can find the perfect ones for your countertop. Another option for securing a countertop is by using adhesive strips. Adhesive strips are applied to the underside of the countertop and then to the wall. This creates a strong bond between the two surfaces and prevents the countertop from moving. If you have a very heavy countertop, you may need to use both countertop brackets and adhesive strips to keep it in place.