Security is not a feature.
It's the foundation.
NoSheet encrypts your sensitive data at the cell level using H33 post-quantum cryptography. PII is protected before it ever touches a database — even we can't read it.
SOC 2
Type II controls implemented and audited
GDPR
Automated consent, right-to-delete, data portability
ISO 27001
12 ISMS controls built into the core
Post-Quantum
H33 BFV FHE + Dilithium signatures
Cell-Level Encryption
Every PII column is encrypted using Fully Homomorphic Encryption (FHE) before it ever reaches the database. Not row-level. Not table-level. Cell-level.
- PII is encrypted before it touches the database — not after
- Keyword tags enable search without decrypting sensitive values
- Per-tenant encryption keys wrapped by a master key
- Phase 2 upgrades to BFV Fully Homomorphic Encryption (FHE)
- Even NoSheet engineers cannot read your encrypted data
- Decryption keys never leave the secure enclave
What you see in NoSheet
Jane Smith
+1 (555) 867-5309
jane@example.com
***-**-4589
What's stored in the database
12 ISMS Controls, Built In
A full Information Security Management System implemented in Rust. Not bolted on as middleware — baked into the core.
RBAC
Fine-grained role-based access at workspace, sheet, and cell level.
DLP
Automatic data loss prevention scanning for SSN, CC, phone, and email patterns.
GDPR
Automated right-to-delete, data portability export, and processing records.
Consent Management
Track and enforce consent per contact with timestamped opt-in records.
Audit Trail
Tamper-proof hash-chain log of every data access, edit, and export.
Change Tracking
Complete version history with diff view and instant rollback.
Incident Response
Automated breach detection, notification workflows, and containment.
Zero Trust
Every request authenticated and authorized. No implicit trust, no shared sessions.
Session Management
Configurable timeouts, concurrent session limits, and forced re-auth.
IP Whitelisting
Restrict access to specific IP ranges for enterprise deployments.
Key Management
Per-tenant keys with automated rotation, wrapped by HSM-backed master key.
Compliance Frameworks
SOC 2 Type II, GDPR, HIPAA-ready, and ISO 27001 alignment.
DLP Scanning & Tamper-Proof Audit Trail
Sensitive data is automatically detected, quarantined, and optionally redacted before it can spread. Every change is recorded in a tamper-proof hash chain.
- Auto-detect SSN, credit card, email, and phone number patterns
- Quarantine flagged cells before they can be shared or exported
- Optional auto-redaction with configurable replacement tokens
- Hash-chain audit trail — every entry references the previous hash
- Tamper detection: if any entry is modified, the chain breaks
- Export full audit log for compliance reviews and incident response
Credit Card Detected
Cell D7 — Visa ending 4242
SSN Pattern
Cell C14 — XXX-XX-XXXX format
Email (PII)
Column E — 2,847 email addresses
Phone Numbers
Column B — 2,535 phone numbers
Built for Security at Every Layer
From the language we chose to the way we sign webhooks, security informed every architectural decision.
Rust Backend
Memory-safe, zero garbage collection pauses, no buffer overflows. The entire ISMS suite runs in compiled Rust.
Tenant Isolation
PostgreSQL with strict tenant isolation. Row-level security policies ensure no cross-tenant data leaks.
Encrypted at Rest
S3 storage with AES-256 server-side encryption. All backups encrypted and geo-replicated.
HMAC-Signed Webhooks
Every outbound webhook is signed with HMAC-SHA256. Built-in SSRF protection prevents internal network access.
Constant-Time Comparison
All signature verification uses constant-time comparison to prevent timing side-channel attacks.
TLS Everywhere
All data in transit encrypted with TLS 1.3. HSTS enforced. Certificate pinning for API clients.
Comparison
How We're Different
Most spreadsheet tools treat security as an afterthought. We built it into the foundation.
| Security Dimension | NoSheet | Google Sheets | Excel | Airtable |
|---|---|---|---|---|
| Cell-Level Encryption | ||||
| Post-Quantum Cryptography | ||||
| DLP Scanning | ||||
| GDPR Automation | Manual | Partial | ||
| Tamper-Proof Audit Trail | Version history | Track changes | Basic log | |
| Zero Trust Architecture | ||||
| RBAC (Cell Level) | Sheet level | File level | Table level | |
| Consent Management | ||||
| AI Data Cleaning | Macros only | Limited | ||
| Built-in Campaign Engine |
Start building on a secure foundation.
Post-quantum encryption, DLP scanning, ISMS compliance, and a tamper-proof audit trail. Free to start. No credit card required.