Microsoft PurviewvsLasso Security
- ✦ Data Loss Prevention (DLP)
- ✦ Sensitivity Labels & Classification
- ✦ Insider Risk Management
- ✦ Prompt Injection Detection
- ✦ Real-Time LLM Firewall
- ✦ Data Leakage Prevention
Real-World Scenarios: When to Choose Which
The question that matters: “In what situation will I regret choosing A over B after 3 months?”
Purview Data Map scans Azure, Microsoft 365, AWS S3, and on-prem SQL Server simultaneously, classifying PII and financial records using built-in classifiers without agent deployment on each source.
Lasso's data privacy layer scans incoming prompts for credit card numbers, SSNs, and email addresses, redacting or blocking the call before any sensitive data hits the LLM.
Insider Risk Management correlates file downloads, Teams messages, and email forwards in sequence, building an evidence timeline for HR without manually pulling each data source.
Purview's data catalog lets analysts search and understand datasets across business units, with lineage graphs showing where data originated and how it transformed.
Lasso sits inline on LLM API traffic and blocks prompt injection attempts in real time, preventing users from jailbreaking or overriding system instructions in production apps.
Policy rules let teams define blocked topics beyond general toxicity, so a financial app blocks competitor mentions while a children's platform blocks age-inappropriate content.
Pricing Intelligence
Microsoft Purview Plans
Paid plans only
- • Basic DLP
- • Sensitivity labels
- • Audit logs
- • Advanced DLP
- • Insider risk
- • Communication compliance
- • Data catalog
- • Information protection
- • Compliance manager
Lasso Security Plans
Paid plans only
- • Real-time LLM protection
- • Custom policy engine
- • API gateway integration
Feature Matrix
4 differences found across 10 standardized features
Pros & Cons Face-Off
Evaluative strengths and weaknesses — not feature lists
- +Best integrated option for Microsoft 365 organizations
- +AI Hub specifically addresses Copilot and GenAI governance
- +Strong DLP and insider risk management
- +Comprehensive eDiscovery and compliance tools
- −Tightly coupled to Microsoft ecosystem
- −Complex licensing across E3/E5 and standalone tiers
- +Real-time LLM firewall with low latency
- +Strong focus on prompt injection and jailbreak detection
- +Founded by experienced cybersecurity professionals
- +Model-agnostic — works with any LLM API
- −Very early stage — limited public reviews
- −Enterprise-only pricing with no self-serve option