From Legacy to AI-Native: Your Complete Guide to Migrating from Code42 to Nightfall

The Code42 Reality Check: Why Your Security Team is Struggling

With Mimecast's acquisition of Code42, enterprise security teams are discovering what many already suspected: their insider risk platform has fundamental limitations that no amount of tuning can fix. Real customers are reporting critical gaps that leave organizations vulnerable, while security teams drown in noise and manual processes.

If you're experiencing these frustrations, you're not alone. We've compiled feedback from actual Code42 deployments to show you exactly why organizations are making the switch to Nightfall—and how you can too.

The Code42 Problems Your Team Faces Every Day

1. Critical Detection Blind Spots

Based on real customer feedback, Code42's detection capabilities are fundamentally broken:

No copy/paste protection - One customer discovered Code42 cannot cover copy/paste functionality at all
Can't see inside files - Code42 cannot track what is inside the file and whether there is sensitive data inside - only picks up sensitive data based on metadata/file name
No content scanning for text or images - Mostly tracks/scans files, not text uploaded to SaaS apps. No OCR or screenshot detection capabilities.
Metadata gaps - Metadata in alerts isn't specific enough

2. Broken Blocking and Remediation

Customers report Code42's blocking is essentially useless:

Browser-only blocking - Code42 has implemented block through the browser extension. This means that browser extensions need to be deployed on all devices/browsers for block to work.
No universal blocking - There is no ability to block any traffic to an unsanctioned destination
Watchlist-only policies - Blocking is only available when the policy is scoped to a specific user “watchlist”
Manual risk management - High risk users are managed manually through lists vs Nightfall that sync IdP group changes dynamically

3. Massive Coverage Gaps

Multiple customers cite missing coverage across critical apps:

No Slack protection
No Jira or Confluence monitoring
No AI tool visibility
Limited to basic file tracking without understanding transformations or content

4. Operational Nightmare

The real cost of Code42 goes beyond licensing:

Rigid 180-day retention with no flexibility for investigations
Pre-defined policies that can't be customized for your organization
Heavy endpoint agent causing performance issues
No integration with modern security stacks
Complex deployment - Product has a lot of moving parts and would take a lot of time to get it set up properly

5. The Mimecast Uncertainty

Customers express concern about the acquisition and slow pace of product innovation. Code42 Incydur product direction and future is as it has been absorbed into the email security suite.

Enter Nightfall: Purpose-Built for Modern Insider Risk

Nightfall directly addresses every Code42 limitation with AI-native architecture designed from day one for comprehensive data loss prevention:

Real Detection That Actually Works

Unlike Code42's metadata-only approach, Nightfall delivers:

Full content inspection - OCR, computer vision, and deep file analysis
Real-time detection - Millisecond response times, not 10-30 minute delays
Cloud file sync, browser file uploads, source code exfiltration, copy/paste protection and coverage across more exfiltration vectors
AI-powered understanding - Detects intellectual property and confidential documents, not just patterns
95% accuracy from day one - Dramatically reduced false positives

Blocking That Actually Blocks

Stop threats everywhere, not just in browsers:

Universal blocking across all exfiltration vectors
Granular controls based on user roles, data sensitivity, and context
Automated remediation from coaching to blocking
Dynamic user risk scoring with automatic IdP synchronization

Complete Coverage Across Your Stack

Protect data everywhere it lives:

Endpoint agents for macOS, Windows and browser plugin across Chrome, Safari, Firefox and Edge
API based coverage for Slack, Google Workspace, Microsoft 365, Atlassian Suite, Salesforce, Notion, Zendesk, AI apps
Comprehensive email DLP (Gmail and Exchange)
Complete data lineage tracking with broad support across exfiltration vectors like clipboard copy/paste, cloud file sync, browser file upload and more

Operations That Scale

Built for lean security teams:

Deploy in hours, not weeks or months
AI DLP SOC agent for natural language investigations
Automated policy tuning that improves over time
Flexible retention and compliance controls
Native SIEM/SOAR integration

Your 30-Day Migration Path

Week 1: Immediate Value

Day 1-3: Rapid Deployment

Deploy Nightfall's lightweight agents on macOS, Windows (few hours vs Code42's weeks)
Configure SaaS integrations including Slack, Atlassian, Microsoft 365, Google Workspace, Notion, Zendesk, Salesforce, AI apps
Enable AI-powered detection policies

Day 4-7: Coverage Expansion

Enable cloud file sync, browser file upload, copy/paste monitoring across all applications
Set up email DLP for Gmail or Exchange Online; Setup automated blocking, quarantine, automated or manual encryption for outgoing emails

Week 2: Intelligence Building

Day 8-14: AI Optimization

Annotate any false positive findings and automatically train Nightfall’s ML detectors on your specific intellectual property
Create custom classifiers Code42 can't support
Configure automated remediation workflows
Connect SIEM/SOAR platforms

Week 3: Validation

Day 15-21: Side-by-Side Comparison

Measure detection accuracy (expect 70-90% fewer false positives)
Validate complete coverage for exfiltration vectors including including automated and manual remediation capabilities
Test blocking across all vectors - endpoints & AI apps, SaaS apps, email, cloud storage and more
Train team on AI SOC agent features - investigate with natural language prompts and remediate as per recommendations

Week 4: Full Migration

Day 22-30: Complete Transition

Migrate users, user groups with dynamic risk scoring
Implement granular policies Code42 can't support
Decommission Code42 agents
Enable full automated remediation

Real Results from Code42 Migrations

Organizations switching from Code42 report:

90% reduction in alert noise through AI-powered accuracy
First insider threat detected within 24 hours (that Code42 missed)
Complete AI visibility on day one
80% faster investigations with natural language queries to Nyx
Zero blind spots with highly accurate content inspection

The Bottom Line: Why Wait?

Every day on Code42 means:

Insider threats moving through several exfiltration vectors undetected
AI tools operating in the shadows
10-30 minute delays while threats escape
Security teams buried in false positives
Critical files exfiltrating based only on metadata checks

Meanwhile, Nightfall customers are:

Catching threats Code42 literally cannot see
Protecting intellectual property with real content analysis
Blocking exfiltration everywhere, not just in browsers
Investigating in natural language, not complex queries
Building proactive security with AI that learns

Don't Let Mimecast Decide Your Security Strategy

The Mimecast acquisition signals the end of Code42 as a dedicated insider risk platform. While they focus on email security integration, your organization needs comprehensive protection today.

Take action now:

Get a personalized migration assessment showing exactly which Code42 gaps put you at risk
See Nightfall detect threats Code42 misses in your environment
Experience AI-powered investigation that makes your team more effective
Start your 30-day migration with full support from Nightfall

Our migration team has helped dozens of organizations escape Code42's limitations. We know every gap, every workaround you've tried, and exactly how to give you the protection you actually need.

Ready to see what Code42 has been missing? Contact sales@nightfall.ai for a gap analysis and proof of concept.

Current Code42 customers may qualify for special migration pricing and accelerated onboarding. Don't wait for the next incident to expose Code42's limitations.