CASB — Take back control of your SaaS and Shadow IT

Discover every SaaS used by your team, allow the safe ones, block the risky ones, apply DLP to ChatGPT, Dropbox, Notion… Included in the Microsoft 365 E5 licence.

See capabilities

Use cases

Why a CASB has become indispensable

With SaaS everywhere and generative AI, data leaks without you knowing.

Shadow IT finally visible

Your team uses 53 different SaaS — you knew about 12. Defender for Cloud Apps discovers them all and rates each.

Auto discovery via firewall/proxy logs
31,000+ apps rated
Risk score per app (1–10)
Recommendation: allow / monitor / block

Sensitive data in ChatGPT blocked

A sales rep pastes a client list into ChatGPT. CASB detects the sensitive content and blocks or alerts.

DLP extended to third-party apps
Real-time content inspection
Conditional Access App Control
Policy per data type (PII, IBAN…)

Download blocked from non-compliant device

A user accesses SharePoint from an unmanaged PC. Read allowed, download blocked — no involuntary leak.

Session control with reverse proxy
Read-only on non-compliant device
Dynamic download blocking
Personalized watermark

Composants

The pillars of a CASB deployment

Defender for Cloud Apps covers the four Gartner CASB pillars.

Visibility (Discover)

Map all SaaS in use, sanctioned and not.

Discovery via Defender, firewall, Zscaler logs
31,000+ apps catalogued
Risk Score per app
Monthly Shadow IT snapshot

Compliance

Align used SaaS with FADP/GDPR/ISO obligations.

DLP policies on SaaS
GDPR violation detection
DPO report
Data mapping per jurisdiction

Data Protection

Prevent leak of sensitive data to/from SaaS.

Real-time reverse-proxy inspection
Sensitivity labels inherited from Purview
Conditional download/upload block
Quarantine or auto-delete

Threat Protection

Detect abnormal behaviour on connected SaaS.

Cross-SaaS UEBA
Impossible travel detection
Mass-download detection
Automated response (suspend session)

Dukiwi

Why Dukiwi for your CASB rollout

Misconfigured, CASB becomes an IT nightmare and a user irritant.

Scoping with management and HR

CASB touches personal usage and productivity. We frame with leadership and HR before any switch — policies that hold over time.

Monitor-first mode

For 4 to 8 weeks we observe before blocking. We refine policies on real data, then activate gradually.

Optimized E5 licences

You pay for Defender for Cloud Apps in E5 — we ensure you actually use it, otherwise it's wasted money.