Additionally, code needs to be written in a way that keeps sensitive information it holds from being looked at, and it needs to protect the tools it uses, such as algorithms, cryptographic keys, or passwords. Source code security also includes producing a product that is as bug free as possible. Policy Security in software starts with a security policy and is important on a number of levels. It helps programmers follow product requirements and forces coding standard and development guidelines. A secure coding policy is especially useful for novice or beginning programmers.
Policy is the proactive way of applying security to a product.
Although nothing is ever completely secure, policy is an essential, initial component in any product. Although coding policies will vary greatly depending upon the product being created the following policy suggestions can help provide an extra layer of protection to a product's code. All software products should have a requirements document that includes security requirements. While developing security business objectives and requirements have to be kept in mind. In the real world, there is a significant trade off between security and cost, and security policies often interfere with convenience.