This document discusses defensive strategies that companies can use to protect themselves from competitors. It outlines two approaches to defensive strategies - active approaches that aim to block competitors through tactics like expanding the company or innovating new products, and passive approaches that focus on reconnecting with old customers. The advantages of defensive strategies are that they typically involve less risk than offensive strategies and can increase marketing to enhance products/services. However, disadvantages are that the business may not understand its target market well and defensive strategies could inhibit innovation and product development. The document stresses that defensive strategies require planning and that focusing on defense is important when the core business is struggling.