SMART HOME PC PROTECTION • v1.0

Protect Your Home PC
Before Trouble Starts.

Defentra blocks dangerous websites, scam connections, trackers, and known threat networks before they reach your apps. Simple protection for Windows 10/11 with no confusing popups and no PC slowdown.

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30-Day Money Back Guarantee • One-Time Payment
Windows 10 / 11 < 1ms Latency Zero Data Collection
Defentra App Dashboard

Protection Status

5 Layers Active

Threats Blocked

200,000+

Blocks Bad Connections Early
6 Threat Intelligence Feeds
DPAPI AES-256 Encryption
Zero Data Collection
Payments via Stripe
200K+
Threat IPs Blocked
<1ms
Latency Added
5
Defense Layers
24/7
Always-On Service

How Defentra Protects You

Stop Threats Before
They Touch Your PC

Most security software waits until something suspicious is already on your PC. Defentra blocks dangerous network connections first, so malware, trackers, and scam domains have a harder time reaching your apps.

STEP 1

Check Connections First

Every new connection is checked before your browser, game, or app talks to the internet. Bad destinations are stopped early.

STEP 2

Judge in Microseconds

Each packet runs through 5 security checks — rate limiting, IP blocklist, process rules, and DNS filtering — all in O(1) constant time.

STEP 3

Drop Silently

Malicious packets are silently dropped and never re-injected. Safe packets pass through instantly. No popups, no interruptions, no lag.

Multi-Layer Architecture

5 Layers of Defense

Each layer catches threats the others might miss. Together they form an unbypassable shield that operates at the deepest level of your system.

1

Early Network Blocking

Deepest Protection

Uses a low-level Windows network driver to check connections before they leave your machine. That means malicious IPs and risky DNS requests can be blocked before they reach your apps.

Zero bypass — even by admin malware ThreadPriority.Highest Near-zero latency
2

Global Threat Intelligence

200,000+ IPs

Live database of 200,000+ known malicious IPs from 6 professional feeds. Stored as HashSet<uint> for O(1) lookup — zero garbage collection pressure. Refreshed every 4 hours automatically.

🔥 FireHOL Level 1 🦠 Abuse.ch Feodo 🛡️ Blocklist.de 📡 Stamparm ipsum 🚫 StopForumSpam ⚡ Emerging Threats
3

Per-Process Application Firewall

App Control

Block any application from accessing the internet by name. Uses Windows' iphlpapi.dll to map ports to running processes every 500ms. Lock-free atomic rules — zero protection gaps.

chrome.exe discord.exe steam.exe any .exe
4

Behavioral Rate Limiting & DoS Protection

Zero-Day Defense

Detects and blocks port scanners, brute-force bots, and flooding malware — even if their IP has never appeared in any threat feed. Triggers at 50+ connections/second to a single destination.

1-second sliding window Per-IP auto-block Catches novel zero-day IPs
5

DNS Deep Packet Inspection

System-Wide Ad Block

Zero-allocation DPI on all DNS queries using ReadOnlySpan<byte>. Blocks advertising networks, trackers, and gambling sites system-wide — every browser and application, no extension needed.

🚫 adservice.* 🚫 doubleclick.* 🚫 casino domains 🚫 gambling sites

Enterprise-Grade Tools

Pro-Level Visibility & Control

We brought advanced enterprise monitoring tools down to the home user level. Get unprecedented visibility into exactly what your PC is doing.

Smart System Scan

A comprehensive one-click analysis of your system's defenses. Verifies kernel driver integrity, validates network firewall rules, and syncs live threat intelligence in seconds.

  • Zero-gap protection verification
  • Live signature tracking

Interactive Geo Threat Feed

Watch incoming attacks get blocked in real-time on an interactive global map. See exactly which countries and IP networks are targeting your machine.

  • Visual attack mapping
  • Live geographic origin data

Live Traffic & Connections

Monitor your system's total bandwidth usage in real-time, and instantly view every single active connection, port, and process communicating over the internet.

  • Bandwidth speed monitoring
  • Process-level socket inspection

Real-World Protection

What Defentra Stops

Every day millions of cyberattacks target Windows PCs. Here's exactly how Defentra neutralizes each one.

🦠

Malware C2 Communication

Malware phones home to command-and-control servers. Defentra blocks the IP (threat feed), burst pattern (rate limiter), and the process (app firewall) — three independent catches.

IP_BLOCK + RATE_LIMIT
🔒

Ransomware Beaconing

Ransomware contacts servers for encryption keys. Abuse.ch Feodo Tracker monitors ransomware C2 servers specifically — blocked before a single file is encrypted.

IP_BLOCK (Feodo)
📡

Internal Port Scanning

Compromised machines scan your network for more victims. Hundreds of SYN packets/sec triggers the rate limiter within 1 second — attack terminated.

RATE_LIMIT
📊

Adware & Telemetry

Bundled software sends tracking data to advertising networks. DNS keyword filtering blocks all ad network domains system-wide — no browser extension needed.

DNS_KEYWORD
🔨

Brute-Force Attacks

Compromised PCs in botnets flood external servers. Flood detection catches 50+ connections/sec bursts and terminates the outbound attack from your machine.

RATE_LIMIT
🚫

Unauthorized App Access

Software that phones home to report usage. Block any .exe by name — the per-process firewall ensures it never makes an outbound connection, regardless of port.

PROCESS:name.exe

The Difference

Defentra vs Traditional Antivirus

Traditional antivirus scans files after they arrive. Defentra blocks connections before they happen.

Feature
Defentra
Traditional AV
Protection Level
Kernel (NDIS)
User-mode
Latency Impact
< 1ms
10–50ms+
CPU Usage
< 1%
10–20%
Threat Database
200K+ live IPs
Signature files
Per-App Blocking
✓ Any .exe
✗ Not available
System-Wide Ad Block
✓ DNS DPI
✗ Browser-only
Data Collection
Zero
Sells telemetry

Built for Trust

Security You Can Verify

Every claim is backed by verifiable technology. No marketing fluff — just real engineering.

DPAPI Encryption

All settings encrypted with Windows DPAPI. Machine-bound. No key to steal. Cannot be decrypted on any other device.

Windows Service

Runs before login, survives logout. Auto-restarts on crash. Silent boot mode with system tray status icon.

Offline Protection

Cached threat database loads instantly on boot. 30-day offline grace period. Protected before internet connects.

Live Dashboard

WebView2 dashboard updates every 500ms — real-time blocked data, bandwidth, threat DB size, connection logs.

User Feedback

Trusted by Security-Conscious Users

★★★★★
Verified Buyer

"Honestly, I just wanted something that didn't make my games lag. This firewall is super light, I don't even know it's there, but it's already blocked a bunch of dodgy sites. Solid buy."

Jason M. USA
Professional & Everyday User
★★★★★

"I'm not exactly a tech genius, so I needed something simple. I feel much better doing my online shopping and banking now. No annoying popups either which is a huge plus!"

Sarah Jenkins
Home User
★★★★★

"I was sick of those big-name antivirus companies charging me every year for stuff I didn't need. Defentra was a one-time thing and it just works in the background. My PC even feels a bit snappier."

Mark D.
Freelancer
PROTECTION STARTS IN MINUTES

Ready to Protect Your PC?

Simple Windows PC protection with 200,000+ risky destinations blocked automatically. No slowdown. No data selling. Set and forget.

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