Security

Security

CyberNotes includes robust security features: master password, auto-lock, privacy shield, and Caps Lock manager.

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Master Password

Setting a Password

1. Go to Settings → Security
2. Enable Master Password
3. Enter and confirm your password
4. Password is hashed with bcrypt before storage

Password Hashing

• bcryptjs (pure JavaScript)
• Salted hashing
• No plaintext storage

Lock Screen

When locked:

• Password required to unlock
• Notes are inaccessible
• Timer shows time since lock

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Auto-Lock

Configuration

Automatically lock after inactivity:

Setting	Range
Timeout	1 minute to 24 hours
Disabled	0 (auto-lock off)

How It Works

1. No keyboard/mouse activity detected
2. Countdown reaches timeout
3. Lock screen appears
4. Password required to continue

Use Case

• Step away from computer
• Prevent unauthorized access
• Shared or public environments

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Privacy Shield

What It Does

When the app is hidden or minimized:

• Screen shield activates
• Prevents shoulder surfing
• Hides note content from view

When It Activates

Trigger	Action
Minimize	Shield activates
Hide to tray	Shield activates
Switch to another app	Shield activates

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Caps Lock Manager

What It Does

Monitors Caps Lock state and:

• Auto-off after inactivity
• Countdown timer before turning off
• Sound notifications

Sound Presets

Preset	Description
Off	No sound
Click	Mechanical click
Beep	Cyber-beep
Chime	Digital chime
Glitch	Glitch blip

Sound Scope

Scope	Description
App	Sound only when CyberNotes focused
Global	Sound anytime Caps Lock changes

Audio Technology

• Web Audio API synthesizer
• Zero external files required
• Pure JavaScript audio generation

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Data Encryption

Storage

• SQL.js database stored locally
• Images in local app data
• No cloud transmission
• No server communication

What Stays Local

Data	Location
Database	%APPDATA%\CyberNotes\cybernotes.db
Images	%APPDATA%\CyberNotes\images\
Settings	SQL.js settings table
Password hash	SQL.js settings table