For more understanding of malware and security breaches, I advise you to read the following:

1. "Phishing Dark Waters: The Offensive and Defensive Sides of Malicious Emails” by Christopher Hadnagy, Michele Fincher, Robin Dreeke
2. "Malware Detection Second Edition” by Gerardus Blokdyk
3. "Don't Panic! I'm A Professional Malware Analyst” by WebSafe Publishing
4. "Big Breaches: Cybersecurity Lessons for Everyone” by Neil Daswani and Moudy Elbayadi
5. "Data Breaches: Crisis and Opportunity” by Sherri Davidoff