A long time ago, I worked in the information security team of a large financial organization. We were completely isolated from the rest of the administration, literally stuck in an office at the end of a building wing, visitors were treated with suspicion and, in turn, we were treated with subtle contempt. After all, we were the protectors of the business, not the employees.
Access control, email intercepts, documenting security breaches, all those lovely things that seemed to hamper regular business operations. Back then, all departments were individual, with development, operations and security in their own silo mentality.