Free Security Tools for Windows

Know Every Threat
On Your Network & PC

Four powerful security tools from PC Armour — free, portable, no account required. Instantly audit your systems, discover every device on your network, and expose hidden vulnerabilities before attackers do.

Explore Tools Network Scanner
50+
Security Checks
8,900+
CVE Signatures
100%
Free & Portable
<60s
Scan Time
The Full Suite

Four Tools. Total Visibility.

From a quick PC health check to deep network CVE analysis — every tool you need to understand and secure your environment.

PC Armour System Auditor
Comprehensive one-click audit of your Windows PC. Checks 50+ security and health indicators across 8 categories and generates a scored Health Index report.
Free · Portable
PC Armour Network Auditor
Scans your entire LAN to map every connected device, identify dangerous open ports, detect default credentials, and surface critical security risks instantly.
Free · Portable
Network Auditor Advanced
Everything in the Network Auditor plus thousands of CVE signature checks, deep vulnerability analysis, and comprehensive device fingerprinting for thorough security assessments.
Coming April 2026
PC Armour Pro MSP
Full managed service platform for IT providers — remote access, endpoint security, malware monitoring, DNS management, app control, zero-day protection and more.
Coming June 2026
Free Tool · No Install

PC Armour
System Auditor

Run a thorough security and health audit on any Windows machine in under 60 seconds. No account, no installation — just extract and run as Administrator. The Auditor analyses over 50 indicators and produces a scored Health Index report you can act on immediately.

  • Antivirus status, real-time protection & definition age
  • Windows Firewall state across all network profiles
  • BitLocker drive encryption & recovery key detection
  • TPM 2.0, Secure Boot & Memory Integrity (HVCI)
  • Running process verification & unsigned binary detection
  • Startup items, persistence registry keys & scheduled tasks
  • Local user accounts, LAPS & admin privilege audit
  • PowerShell execution policy & screen lock enforcement
  • USB storage access, RDP status & browser extensions
  • Windows 11 CPU compatibility & OS version scoring
  • Validates real-world antivirus protection by probing live malware and phishing URLs — confirming your defences actually block threats
  • Network protection level testing — verifies DNS filtering, firewall efficacy, and whether unsafe sites are blocked before they reach you
Download System Auditor

  Standalone .zip · Extract and Run As Administrator

PC Armour System Auditor — DESKTOP-EXAMPLE
78 /100 Health
Windows 11 24H2 · DESKTOP-EXAMPLE
Windows Defender
ACTIVE
Firewall
ENABLED
BitLocker Encryption
DISABLED
Secure Boot
ENABLED
TPM 2.0
PRESENT
Memory Integrity (HVCI)
DISABLED
PowerShell Policy
UNRESTRICTED
Screen Lock Policy
NOT SET
Remote Desktop
DISABLED
Unsigned Processes
NONE FOUND

Illustrative sample — results vary per machine

50+
Checks Run
8
Categories
<60s
Runtime
NetworkArmour — Scan Report
14
Devices Found
2
Compromised
3
Medium Risk
☠ Compromised Devices
192.168.14.105
Canon Printer · JetDirect :9100
CVE-2022-24671
192.168.14.1
Router · Default Admin Creds
EXPOSED
All Live Hosts
192.168.14.22
FTP·Telnet·SMB open — OFFICE-PC
HIGH
192.168.14.31
QNap NAS — BACKUP-NAS
INFO
192.168.14.48
Yealink T55W — VoIP :5060
PROTECTED
192.168.14.60
IP Camera — No Auth Page
REVIEW

Scan results auto-expire after 48 hrs · WAN IP checked against VirusTotal & AbuseIPDB

Free Tool · No Install

PC Armour
Network Auditor

Point it at any subnet and within seconds you'll have a full map of every live device, every open port, and every dangerous misconfiguration on your network. Perfect for a rapid first-pass security check of homes, offices, or client sites.

  • Full LAN device discovery with vendor/OUI identification
  • Port scan with service fingerprinting & banner grabbing
  • Default & weak credential testing (50+ vendor defaults)
  • CVE-linked vulnerability findings on exposed services
  • HTTP/Digest login detection & credential pen-testing
  • Device type classification — cameras, NAS, VoIP, printers
  • NetBIOS name resolution & hostname discovery
  • WAN IP checked against VirusTotal, Shodan & AbuseIPDB
  • Shareable web report with unique scan ID
  • One-click AI analysis export for deeper review
Download Network Auditor

  Windows · Portable .zip · Run As Administrator

Coming April 2026 · Free · No Install

Network Auditor
Advanced

Arriving April 2026 — the Advanced edition goes deeper than the standard scanner. It combines everything in the standard tool with an extensive CVE database of 8,900+ signatures, deep protocol analysis, and comprehensive vulnerability assessment — the professional tool for thorough network security reviews.

8,900+
CVE Signatures
Checks every discovered service against thousands of known CVEs, flagging vulnerable software versions, unpatched firmware, and exploitable misconfigurations.
Deep CVE Matching
Service banners matched against 5,000+ vulnerability signatures including printer firmware, NAS exploits, VoIP flaws and more.
Device Fingerprinting
Advanced OS and device type detection using TCP stack analysis, HTTP headers, SNMP OIDs, and service correlation.
Protocol Deep-Dive
In-depth analysis of SMB, SNMP, RDP, SIP, FTP, and database services — checking for deprecated versions and dangerous configurations.
Detailed Remediation
Every finding includes a specific remediation recommendation, risk severity, and CVSS score where applicable.
WiFi Profile Audit
Extracts and analyses stored WiFi profiles, flags weak PSK security, and checks for rogue SSID risks.
Infrastructure Mapping
Identifies and classifies routers, switches, firewalls, cameras, VoIP systems, NAS, and IoT devices with confidence scoring.
Available April 2026

  Free · Windows · Portable .zip · Run As Administrator

Standard vs Advanced — Feature Comparison
Feature
STD
ADV
LAN Device Discovery
Port Scan & Service ID
Default Credential Testing
Shareable Web Report
CVE Vulnerability Matching
5,000+ CVE Signatures
Advanced Device Fingerprinting
Deep Protocol Analysis
WiFi Profile Security Audit
CVSS Score & Detailed Remediation
Pro tip: Use the standard Network Auditor for quick daily checks. Run the Advanced edition before client security reviews or when investigating a suspected incident.
Launching June 2026

PC Armour Pro MSP

The complete managed service platform for IT professionals. Everything you need to monitor, secure, and manage your clients' entire Windows fleet — from a single web portal.

Remote Access & Control
Full remote desktop access to client machines. Integrated tools for diagnosis, configuration, and immediate remediation.
System & Health Diagnostics
Continuous monitoring of CPU, RAM, disk health, event logs, uptime and performance trends across all endpoints.
Network Security Scans
Centrally scheduled full network audits with automated CVE checks, rogue device alerts, and full reporting history.
Malware & Threat Monitoring
Real-time process monitoring, unsigned binary detection, and VirusTotal integration to catch active threats across your fleet.
Zero-Day Critical Alerts
Instant notifications when critical zero-day vulnerabilities are detected on managed endpoints — with guided remediation steps.
Network Protection Monitoring
Tests and scores firewall, DNS, and antivirus protection on all endpoints daily. Track your clients' security posture over time.
Application Blocking
Policy-based app control to block unauthorised software, restrict USB storage, and enforce security baselines remotely.
DNS Management
Centrally manage DNS settings across all devices. Push secure DNS resolvers and domain filtering policies from the portal.
Compliance Reporting
Generate branded security reports for clients. Track remediation over time, demonstrate value, and meet audit requirements.

  Developed by ITProExpert · Ravtic LLC  ·  Microsoft AI Cloud Partner  ·  DigiCert Code Signing Accredited

Privacy First

PC Armour does not sell or share your data. The only personal information ever required is an email address for Pro MSP accounts.

Code Signed & Certified

All PC Armour software is digitally signed with a DigiCert-accredited code signing certificate through Ravtic LLC, verifying its authenticity.

Secure Payments via Stripe

All Pro subscriptions are processed by Stripe Inc. We never store any financial data. Free tools require no payment or account.

Microsoft Cloud Partner

Developed by Ravtic LLC, a certified Microsoft AI Cloud Partner and Microsoft Development Partner, ensuring enterprise-grade quality.