John Gordon 
Practical Data Security [PDF ebook] 

First published in 1993, this volume emerged in response to the genesis of the Internet and provides early considerations on issues including computer viruses, cyber security and network encryption management, with a particular focus on applying risk analysis to the data security of financial institutions. With the stage set by the UK Data Protection Act of 1984 and the Computer Misuse Act of 1990, this volume provides a series of useful contributions for large companies and home PCs and provides a clear introduction setting out the context and the relevant terminology.