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02/08/2026 11:22 am
TL;DR: Security teams often treat CASB and DLP as interchangeable, yet the two controls sit at different layers: CASB governs access to cloud applications and flags shadow IT and risky OAuth grants, while DLP classifies and protects sensitive data as it moves across endpoints, cloud services, and AI tools, according to Cyberhaven. The real risk is assuming one control can cover both access and content, which leaves audit and breach gaps.
NHIMG editorial — based on content published by Cyberhaven: CASB vs DLP: Key Differences and When to Use Each
Questions worth separating out
Q: How should security teams decide whether CASB or DLP is the first control to fund?
A: Start with the dominant failure mode.
Q: Why do CASB and DLP create blind spots when used alone?
A: CASB alone can miss what happens to data after a sanctioned cloud session begins, especially when the file leaves the app through another channel.
Q: What do organisations get wrong about OAuth risk and data loss prevention?
A: They often treat OAuth as a content issue instead of an access issue.
Practitioner guidance
- Define separate ownership for CASB and DLP use cases Assign cloud access governance, shadow IT discovery, and OAuth risk to one control owner, and content classification, endpoint inspection, and AI tool coverage to another.
- Review risky delegated app access first Inventory OAuth grants with broad read-write permissions to Google Workspace, Microsoft 365, Salesforce, and other core SaaS platforms.
- Test DLP coverage outside sanctioned cloud paths Validate whether your DLP platform inspects email, USB, local saves, printing, and AI tools, not only SaaS traffic.
What's in the full article
Cyberhaven's full blog post covers the operational detail this post intentionally leaves for the source:
- Line-by-line comparisons of CASB and DLP detection coverage across SaaS, endpoints, email, and AI tools
- Practical examples of how data lineage is used to distinguish routine movement from suspicious exfiltration
- Guidance on evaluating whether a platform’s “CASB with DLP” claim really covers access and content layers
- Examples of how the vendor positions its AI-native DLP and DSPM capabilities in a layered stack
👉 Read Cyberhaven's analysis of CASB vs DLP and cloud data protection →
CASB vs DLP: are your cloud and data controls aligned?
Explore further
02/08/2026 12:40 pm
CASB and DLP fail in different ways, so treating them as substitutes creates control debt. CASB answers who can touch a cloud app and under what conditions, while DLP answers what the data is and where it can go. Organisations that collapse those questions into a single buying decision often end up with visibility at one layer and blind spots at the other. The practical conclusion is simple: architecture should separate access governance from data governance.
A question worth separating out:
Q: How do CASB and DLP work together in a cloud security programme?
A: CASB should discover cloud app usage, assess session risk, and enforce contextual access. DLP should classify data, track sensitive movement across channels, and stop unauthorised export. Used together, they create a stronger investigation chain because one system explains who accessed the app and the other explains what happened to the data.
👉 Read our full editorial: CASB and DLP overlap less than teams think
