PLAIN-LANGUAGE PRIVACY NOTICE
Last updated: 19 August 2026. This notice separates the downloaded Windows agent from the public website counters, optional internet test, optional safe optimizer, and user-controlled exports.
The agent reads information that Windows exposes about hardware, performance, battery, storage, security, displays, processes, drivers, local network adapters, and recent reliability events. Reports are served only through 127.0.0.1 and are not uploaded. Crash dumps are listed by metadata only; their contents are not automatically parsed.
The installed agent and its saved reports are scheduled for removal after 1 hour. You can clear reports or uninstall earlier from the dashboard. The verified extracted folder and exact matching downloaded release ZIP are also removed when their internal release marker and version can be validated safely. Unrelated downloads are never selected.
The hosted website counts one visit per public network per UTC day and counts each Windows-agent download request that reaches the server redirect. The server turns the visit address into a daily salted one-way hash held only in a fixed 32-day counter window; raw IP addresses are never stored, displayed, or written to the metric log. The owner audit log records only event type and time. Aggregate website counters are separate from local diagnostic reports.
The standard local scan can resolve dns.msftncsi.com through the PC's configured DNS path and ping the configured DNS server to measure lookup and response time. These probes send only normal DNS/ICMP network traffic, never the system report or a personal file. The separate internet speed test runs only after you choose it and confirm; it contacts Cloudflare, transfers generated test data, and exposes normal connection metadata such as your public IP to Cloudflare.
SYSTEM CHECK does not require an account and does not add advertising cookies. The website host may process standard security and access logs under its own terms.
Do not download the agent if you do not want a local scan. The optional optimizer runs only after confirmation and touches only old per-user temporary files plus the DNS cache. Use Clear reports or Uninstall to remove local SYSTEM CHECK data immediately.
Automatic monitoring is off by default. If enabled, it saves a local snapshot every 30 minutes only during the private 1-hour session. It uses Task Scheduler when permitted or a no-admin background process, and Uninstall removes either mechanism.
HTML, JSON, CSV, print/PDF, CLI, and optional fleet outputs mask system, BIOS, motherboard, chassis, battery, drive, and monitor serial numbers plus UUID/device IDs and asset tags by default. Including full identifiers requires an explicit confirmation or command-line switch. Even masked exports can contain device, network, or event information; share them only through a trusted support or organization-approved secure channel.
