Secblitz turns on the security and privacy settings Windows leaves off, in one click. It also removes bloatware and blocks ads, trackers and malware sites on your whole PC. Every change can be undone.
Download for Windows · Website · Security · Contributing
- Check. Secblitz looks at your Windows settings and shows which ones could be safer. It takes about a minute and changes nothing.
- Review. Each setting says what it protects against and what changes for you.
- Fix. One click fixes everything you approved. Secblitz then confirms each fix worked.
- Undo. Every change is recorded. History puts your old settings back.
- One-click fixes for more than 50 security and privacy settings: virus protection, firewall and network, sign-in, updates, startup, disk and privacy. Anything already secure is left alone.
- Bloatware removal. Removes unwanted apps that came with Windows. Secblitz keeps a copy of each, so you can restore it later, even offline.
- Ad and malware blocker. Blocks ads, trackers and malware sites in every browser and app.
- Background monitoring. Tells you if your protection gets worse.
- History of every change and every removed app.
- Six languages: English, Spanish, French, German, Portuguese and Italian. Light and dark mode.
Secblitz only looks at settings on this PC and changes them with your approval. It does not look at other devices, list open ports or test passwords.
Secblitz is not an antivirus. It turns on and configures the protection built into Windows, and it leaves third-party antivirus and PCs managed by work or school alone.
Download the installer (about 9 MB) and run it. For a PC with an ARM processor, like a Snapdragon laptop, use the ARM installer instead. Secblitz asks for administrator permission because it reads and changes system settings.
The installer is not code-signed yet, so Windows may show an unknown publisher warning. Choose More info, then Run anyway. To check the file, compare its SHA-256 with the one on the download page:
Get-FileHash .\secblitz-1.0.0-windows-x64-setup.exe -Algorithm SHA256Each release also has a parts list (.cdx.json) on its GitHub release page that names every piece of code Secblitz is built from.
Using Secblitz 0.9.2 or older with Web protection on? It can't update itself to a newer version. Download and run the installer once; your settings, history and undo stay.
| Windows | Edition | Version | Processor | Supported | Tested |
|---|---|---|---|---|---|
| Windows 11 | Home | 24H2 | x64 | ✓ | ✓ 1.0.0 |
| Windows 11 | Pro | 25H2 | x64 | ✓ | ✓ 1.0.0 |
| Windows 11 | Enterprise | 25H2 | x64 | ✓ | ✓ 1.0.0 |
| Windows 11 | Pro | 24H2 | ARM | ✓ | Not yet |
| Windows 10 | Home | 22H2 | x64 | ✓ | Not yet |
| Windows 10 | Pro | 22H2 | x64 | ✓ | Not yet |
| Windows 10 | Enterprise | 22H2 | x64 | ✓ | ✓ 1.0.0 |
Secblitz supports Windows 10 version 22H2 and Windows 11, in the Home, Pro and Enterprise editions. It works from an administrator account or a standard account; on a standard account, Windows asks for an administrator's password before Secblitz changes anything. Microsoft stopped free security updates for Windows 10 on 14 October 2025 and Secblitz cannot replace them, so moving to Windows 11, or Microsoft's Extended Security Updates, keeps a Windows 10 PC safest.
Open Settings, then Apps, then Installed apps (on Windows 10: Apps, then Apps and features). Find Secblitz and choose Uninstall. Secblitz asks whether to keep your PC as it is now or put everything back the way it was. Either way, it removes itself.
You can also open Secblitz, go to Settings and choose Remove Secblitz from this PC. If you use the portable version, do that to put your settings back, then delete the secblitz.exe file.
On Windows 11, install:
- Rust (the pinned compiler in
rust-toolchain.tomlis selected automatically) - Visual Studio Build Tools with "Desktop development with C++"
- Inno Setup 6.4 or later, only for the installer
git clone https://github.com/secblitz/Secblitz.git
cd Secblitz
# The app only: target\release\secblitz.exe
cargo build --locked --release
# Tests, the app and the installer: dist\
powershell -ExecutionPolicy Bypass -File scripts\build-release.ps1To build the Windows app from Linux, see CONTRIBUTING.md.
No account, no ads, no telemetry. Secblitz goes online to update itself (if updates are on), for actions you start, and to download block lists if web protection is on. See the privacy policy.
Free code signing provided by SignPath.io, certificate by SignPath Foundation. Releases are built from this repository by GitHub Actions, and each signing request is approved by hand. Read the full Code signing policy, also on the website.
For how well Secblitz works with the keyboard and other ways of using a PC, see the accessibility statement. For what is planned, see the roadmap. To report a security problem, see SECURITY.md. To build Secblitz or send a change, see CONTRIBUTING.md.
MIT. Fonts, icons, libraries and block lists from others are credited in THIRD-PARTY-NOTICES.md.