ANAVHEOBA · asdas6wdqc · Mar 26, 2026
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+# Security Best Practices Guide
+
+> 🔐 Protect your privacy. Protect your funds. This guide covers essential security practices for using PrivacyLayer.
+
+---
+
+## Table of Contents
+
+1. [Note Management](#1-note-management)
+2. [Privacy Practices](#2-privacy-practices)
+3. [Operational Security](#3-operational-security)
+4. [Common Pitfalls](#4-common-pitfalls)
+5. [Emergency Procedures](#5-emergency-procedures)
+
+---
+
+## 1. Note Management
+
+Your note is the **only proof of your deposit**. Loss of note = permanent loss of funds. There is no recovery mechanism.
+
+### 1.1 Backup Strategies
+
+| Method | Recommended | Notes |
+|--------|-------------|-------|
+| Encrypted USB drive | ✅ Yes | Store in a secure physical location |
+| Hardware wallet (air-gapped) | ✅ Yes | Best for large amounts |
+| Encrypted cloud storage | ⚠️ Use with caution | Ensure strong encryption and 2FA |
+| Paper backup | ✅ Yes | Laminate and protect from fire/water |
+| Password manager | ⚠️ Use reputable ones | 1Password, Bitwarden, etc. |
+
+**Backup checklist:**
+- [ ] Create at least **2 independent backups** on different media
+- [ ] Verify backups are readable before relying on them
+- [ ] Periodically check backup integrity (every 6 months)
+- [ ] Store backups in **different physical locations**
+
+### 1.2 Secure Storage
+
+**DO:**
+- Store notes in an encrypted container (GPG, VeraCrypt)
+- Use strong, unique passwords for encrypted containers
+- Keep firmware and software updated
+- Use air-gapped computers for critical operations
+
+**DON'T:**
+- Store notes in plain text files
+- Keep notes in cloud-synced folders without encryption
+- Share notes via email, messaging apps, or screenshots
+- Store notes on devices connected to the internet
+
+### 1.3 Never Share Notes
+
+> ⚠️ **CRITICAL: Your note is your funds. Anyone with your note can withdraw your deposit.**
+
+**Never share your note under any circumstances.** PrivacyLayer staff will NEVER ask for your note.
+
+**Legitimate scenarios where you might share a note (use extreme caution):**
+- Withdrawal verification (only when YOU initiate the process)
+- Auditing (use read-only tools, never expose the raw note)
+
+**Red flags — STOP immediately:**
+- Anyone asking for your note to "verify" your account
+- "Support" requests requiring note access
+- Phishing attempts with privacy pool branding
+
+### 1.4 Recovery Impossibility
+
+PrivacyLayer is designed so that:
+
+- **No one** (including the development team) can recover your note
+- **No password reset** is possible
+- **No central authority** holds backup keys
+- **No KYC data** is linked to your notes
+
+This is a **feature**, not a bug. It ensures true privacy. Accept the trade-off: **you are solely responsible for your note's security.**
+
+---
+
+## 2. Privacy Practices
+
+PrivacyLayer hides the link between your deposit and withdrawal — but only if you follow these practices.
+
+### 2.1 Wait Time Between Deposit and Withdrawal
+
+| Scenario | Minimum Wait | Recommendation |
+|----------|-------------|----------------|
+| Small privacy amount | 24 hours | Wait 1–7 days for better privacy |
+| Large privacy amount | 7+ days | Wait 2–4 weeks |
+| High-risk activity | 30+ days | Extreme caution for large sums |
+
+**Why wait?** The longer the time between deposit and withdrawal, the harder it is to correlate transactions on-chain.
+
+### 2.2 Use Different Addresses
+
+Always use **fresh, unrelated addresses** for:
+
+- Deposit address (where you send funds FROM)
+- Withdrawal address (where you receive funds TO)
+
+**Best practices:**
+- Never reuse addresses
+- Use a new address for each privacy session
+- Ensure deposit and withdrawal addresses have no prior transaction history together
+- Consider using intermediate addresses for large amounts
+
+```
+❌ BAD: Deposit from A → Withdraw to B where A and B have prior transactions
+✅ GOOD: Deposit from A → Withdraw to C (no prior relationship to A)
+```
+
+### 2.3 Avoid Patterns
+
+**Transaction patterns can break privacy:**
+
+| Avoid | Instead |
+|-------|---------|
+| Regular deposits/withdrawals at set times | Vary amounts and timing |
+| Round numbers (1000 XLM, 100 USDC) | Add small random amounts |
+| Always withdrawing to the same address | Rotate withdrawal destinations |
+| Predictable deposit amounts | Use variable denominations |
+| Same-time-of-day transactions | Distribute across different times |
+
+### 2.4 Privacy Pool Parameters
+
+| Parameter | Recommended Setting |
+|-----------|-------------------|
+| Minimum deposit denomination | Follow pool's base denomination |
+| Deposit batching | Group deposits, wait between each |
+| Withdrawal frequency | Reduce frequency for large amounts |
+| Address generation | Use SDK's built-in address generation |
+
+---
+
+## 3. Operational Security
+
+### 3.1 Computer Security
+
+**Essential practices:**
+
+- Use a dedicated device for privacy pool transactions
+- Keep OS and software updated
+- Use reputable antivirus/antimalware
+- Enable firewall
+- Use hardware security keys (YubiKey, etc.) for sensitive accounts
+
+**For maximum security — Air-Gapped Setup:**
+
+```
+Internet ─ ✗ DISCONNECTED ▼
+         │
+    [USB Drive]
+         │
+   [Air-Gapped Computer]
+         │
+    [Generate & Sign Transactions]
+         │
+      [USB Drive]
+         │
+   [Online Computer]
+         │
+   [Broadcast to Stellar]
+```
+
+### 3.2 Network Privacy
+
+- **Avoid** using PrivacyLayer on public Wi-Fi
+- Use Tor or a reputable VPN for additional network privacy
+- Check for DNS leaks
+- Consider using a network-isolated setup for sensitive operations
+
+### 3.3 Smart Contract Interaction
+
+**Before interacting with PrivacyLayer:**
+
+- [ ] Verify contract address on official sources (GitHub, Stellar.expert)
+- [ ] Test with a small amount first
+- [ ] Read the contract source code if technically capable
+- [ ] Check for recent security audits
+- [ ] Monitor official channels for security announcements
+
+---
+
+## 4. Common Pitfalls
+
+### 4.1 User Errors
+
+| Mistake | Consequence | Prevention |
+|---------|-------------|------------|
+| Losing note | Permanent fund loss | Multiple encrypted backups |
+| Sharing note | Funds stolen | Never share, ever |
+| Reusing addresses | Privacy reduced | Always use fresh addresses |
+| Rushing withdrawals | Privacy broken | Wait appropriate time |
+| Ignoring denominational limits | Transaction failure | Check pool config before depositing |
+
+### 4.2 Scam Prevention
+
+**Recognize and avoid:**
+
+- ❌ Fake "PrivacyLayer support" DMs — staff will never DM you first
+- ❌ Unofficial websites mimicking PrivacyLayer
+- ❌ "Guaranteed privacy" claims — no system is 100% private
+- ❌ Requests to send funds to "verify" your wallet
+- ❌ Phishing emails with fake PrivacyLayer links
+
+**Verify official channels:**
+- GitHub: [ANAVHEOBA/PrivacyLayer](https://github.com/ANAVHEOBA/PrivacyLayer)
+- Official documentation only from these sources
+
+### 4.3 Technical Pitfalls
+
+- **Clock sync issues** — Ensure your device clock is accurate (Stellar uses UTC)
+- **Insufficient balance** — Always reserve XLM for fees (minimum ~1 XLM fee)
+- **Wrong network** — Double-check you're on Stellar mainnet/testnet
+- **Transaction timeout** — Some operations may take time; wait for confirmation
+
+---
+
+## 5. Emergency Procedures
+
+### 5.1 If Your Note is Compromised
+
+1. **ACT FAST** — If someone else has your note, they can withdraw your funds immediately
+2. Withdraw ALL funds from the compromised note immediately
+3. Generate a new note and secure it properly
+4. Report the incident (for documentation, not recovery)
+
+### 5.2 If You Lose Your Note
+
+**Unfortunately, there is no recovery path.** This is by design.
+
+**Prevention is the only solution:**
+- Follow the backup procedures in Section 1.1
+- Use the checklist to verify your backup strategy
+- Test restore procedure periodically
+
+### 5.3 Suspected Phishing/Scam
+
+1. **DO NOT** interact with the suspicious entity
+2. Verify through official channels
+3. Report to the PrivacyLayer community
+4. Share details to warn others (without exposing your sensitive data)
+
+---
+
+## Quick Reference Checklist
+
+### Before Each Transaction
+
+- [ ] Device clock synced and secure
+- [ ] Official contract address verified
+- [ ] Sufficient balance for fees + deposit
+- [ ] Fresh withdrawal address prepared
+- [ ] No public Wi-Fi or VPN concerns
+
+### Long-Term Security
+
+- [ ] 2+ encrypted backups created
+- [ ] Backups in different physical locations
+- [ ] Backup integrity verified
+- [ ] Hardware security key configured
+- [ ] No sensitive data in plain text anywhere
+
+---
+
+## Security Contacts
+
+- **Bug Bounties:** See [Bug Bounty Program](../../BugBounty.md)
+- **Security Disclosures:** Via GitHub Security Advisories
+- **Questions:** Open a GitHub Discussion (NEVER share your note)
+
+---
+
+*Last updated: 2026-03-26*