CISO Tradecraft® #224 - The Evolution of Data Loss Prevention (DLP)
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Mar 17, 2025 Explore the fascinating journey of Data Loss Prevention technologies, from simplistic 'dirty word lists' to cutting-edge AI models. Discover the importance of context-aware solutions and how regulatory impacts shape DLP strategies. Learn about modern tools like Microsoft Purview that aid in data classification. Gain insights into the critical phases of DLP, as well as advanced content inspection techniques that bolster data security. This discussion equips you with the knowledge to navigate the evolving landscape of information protection confidently.
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Early Military 'Dirty Word List'
- In the early 1990s, the military used a 'dirty word list' to prevent classified info from leaking to unclassified networks.
- This simple yet effective method flagged sensitive terms to protect data flow across different security levels.
Regex Matching Limits Early DLP
- Early DLP solutions used regex matching to identify sensitive data like SSNs and credit card numbers.
- However, this method caused many false positives due to lack of context in content filtering.
USB Control Needs Nuance
- Block USB drives to prevent unauthorized data exfiltration but beware of disabling essential device functions.
- Differentiate USB data devices from keyboards and mice to avoid operational disruption.