XDA published a piece this month walking through a monitor that installed a helper app on a Windows PC without asking. The trick was not clever malware. The monitor plugged in over USB Type-C, presented itself to Windows as a HID keyboard, and typed the install command straight into an open shell. Windows saw a keyboard, mounted it instantly, and never questioned the source. That is the whole BadUSB pattern in one appliance. The best apps for USB HID protection on desktop in 2026 close this gap by refusing to trust any HID device the operating system has not seen before, or by killing keystroke floods the moment a strange keyboard shows up. This list ranks eight tools that cover Windows, macOS, and Linux, and it mixes open source projects, single-user utilities, and enterprise device control suites so a home tinkerer and a hospital IT team can both find something workable.
What to look for in a USB HID protection app
A useful HID guard needs more than a USB port toggle. Six things matter in practice.
- Allowlist policy. The tool should let you pin exactly which vendor and product IDs are trusted, and refuse any keyboard or mouse that does not match.
- Kernel-level block. Enforcement has to sit below the desktop session, or a malicious keyboard can type past a pop-up before you can click it.
- Cross-platform coverage. Fleets rarely run one operating system, so a tool that covers Windows, macOS, and Linux under one policy saves audit time.
- Per-device fingerprinting. Serial number, interface class, and hash of the descriptor let you tell two identical-looking Logitech dongles apart.
- Easy temporary trust. When a guest shows up with a legitimate USB conference clicker, the workflow to trust it for one meeting should take seconds, not a change request.
- Reporting. Central logs of every device attach, block, and override are what turn a technical control into a compliance story.
Quick comparison
| App | Best for | Platforms | Free plan | Starting price |
|---|---|---|---|---|
| USBGuard | Linux servers and workstations | Linux | Yes, open source | Free |
| Microsoft Defender for Endpoint | Windows fleets already on Defender | Windows, macOS | With Defender license | Bundled in M365 E5 |
| Beamgun | Single-user Windows desktops | Windows | Yes, open source | Free |
| ManageEngine Device Control Plus | SMB Windows fleets | Windows | Free tier up to 25 endpoints | Around $595/year for 100 endpoints |
| Netwrix Endpoint Protector | Cross-platform enterprise DLP | Windows, macOS, Linux | Trial only | Quote-based, mid-market |
| Ivanti Device Control | Regulated enterprises | Windows | Trial only | Quote-based, enterprise |
| AccessPatrol (CurrentWare) | Teams that want granular HID rules | Windows | Trial only | From about $12 per user per month |
| USB-Lock-RP | On-premises Windows networks | Windows | Trial only | Per-endpoint quote |
The apps
1. USBGuard – Best for Linux servers and workstations
USBGuard is the reference implementation of USB device authorization on Linux. A small daemon reads a rule set written in a simple grammar, watches every USB attach event through the kernel, and blocks anything that does not match. The 1.1.4 line ships in Ubuntu, Debian, Fedora, RHEL, and Arch, and Red Hat still contributes patches upstream, so this is not a hobby project. HID class devices can be pinned to specific vendor IDs, serial numbers, or interface hashes, which stops a rogue USB Type-C monitor from claiming keyboard status the second it plugs in.
Where it falls short: Linux only. The command line is the primary interface, and the GTK front end is minimal. New administrators need to write a starter policy before the daemon becomes useful, and a wrong rule can lock you out of your own keyboard on the next reboot.
Pricing: Free, GPLv2.
Platforms: Linux (Windows and macOS are not supported).
Download: USBGuard project site
Bottom line: If your endpoints run Linux, this is the tool to reach for first. The learning curve is real, but nothing else on Linux gives you the same enforcement guarantees.
2. Microsoft Defender for Endpoint – Best for Windows fleets already on Defender
Defender for Endpoint device control is the piece of the Microsoft security suite that most Windows admins forget they already own. Policies flow from Intune or Group Policy and can block, audit, or read-only entire device classes including HID. A June 2026 refresh of the Microsoft Learn docs made the HID rule syntax cleaner and added first-party support for macOS device control policies through the same portal.
Where it falls short: policy authoring is JSON heavy and the portal changes vocabulary between updates. Coverage on macOS is real but narrower than on Windows, and Linux is not in scope at all.
Pricing: Included with Microsoft 365 E5 or Defender for Endpoint Plan 2. No standalone free tier.
Platforms: Windows 10, Windows 11, Windows Server, macOS.
Download: Microsoft Defender for Endpoint device control docs
Bottom line: If you pay for E5, turn this on today. If you do not, the licence cost is hard to justify for HID protection alone.
3. Beamgun – Best for single-user Windows desktops
Beamgun is a small open-source Windows tray app that watches for new keyboards. When one appears, Beamgun blocks all keystrokes and pops a warning until you dismiss it. That single behaviour catches almost every USB Rubber Ducky style attack, because the injector needs uninterrupted typing to succeed. The project also has a mode that disables newly attached USB network adapters, which handles the second common BadUSB variant.
Where it falls short: Beamgun is a personal defender, not a fleet tool. There is no central console, no reporting, and no macOS or Linux port. The last major release was some time ago, though the codebase is small enough that the community keeps forks alive.
Pricing: Free, MIT licence.
Platforms: Windows 7 through Windows 11.
Download: Beamgun on GitHub
Bottom line: For a personal Windows machine that occasionally sees untrusted USB, this is a five-minute install that closes the loudest attack path.
4. ManageEngine Device Control Plus – Best for SMB Windows fleets
Device Control Plus builds a trusted device inventory and denies everything outside it. Administrators can pin specific HID vendor and product IDs, block whole device classes, or set read-only rules for storage, all from a web console that most Windows shops can pick up in an afternoon. ManageEngine positions the product as zero-trust for peripherals, which in practice means the default posture is deny and every allowed device is an explicit entry.
Where it falls short: the console is dense with tabs, and reports can feel noisy without tuning. Coverage is Windows first; other operating systems get lighter treatment.
Pricing: Free tier for up to 25 endpoints. Professional edition starts near $595 per year for 100 endpoints, with a perpetual licence available around $1,488 for the same count.
Platforms: Windows.
Download: ManageEngine Device Control Plus
Bottom line: If you run a 20 to 500 seat Windows shop and want visible HID rules without paying enterprise DLP prices, this is the practical pick.
5. Netwrix Endpoint Protector – Best for cross-platform enterprise DLP
Endpoint Protector, now sold under the Netwrix name after the CoSoSys acquisition, is one of the few device control products that treats Windows, macOS, and Linux as equal citizens. HID class handling includes per-VID and per-PID rules, temporary offline enforcement, and central shadow logging. Reviews on PeerSpot and G2 consistently score it above 8 out of 10, with the multi-OS coverage cited as the standout.
Where it falls short: pricing is quote-based and lands in mid-market territory. Older macOS and Linux hosts sometimes need agent-side troubleshooting after major OS updates.
Pricing: Trial available. Production licences are quote-based.
Platforms: Windows, macOS, Linux.
Download: Netwrix Endpoint Protector product page
Bottom line: Regulated organisations with a mixed OS estate get the widest coverage from a single agent here.
6. Ivanti Device Control – Best for regulated enterprises
Ivanti Device Control uses a default-deny posture with granular whitelisting, which is the exact model auditors ask for. HID rules can be scoped by user, group, machine, or time window, and one built-in behaviour will lock the desktop the moment a new HID device is hot-plugged during an active session. That single feature stops opportunistic drive-by BadUSB attacks in shared spaces.
Where it falls short: like most Ivanti products, deployment involves multiple consoles and licensing tiers. The learning curve is aimed at dedicated endpoint security teams rather than solo admins.
Pricing: Trial available. Enterprise licensing, quote-based.
Platforms: Windows.
Download: Ivanti Device Control
Bottom line: The natural pick for enterprises with existing Ivanti agreements and a compliance framework that demands documented device policies.
7. AccessPatrol (CurrentWare) – Best for teams that want granular HID rules
AccessPatrol treats HID as a first-class device category. Administrators can allow specific keyboards and mice by identifier and block every other input device, which is exactly the right posture against a BadUSB monitor. There is also a mode that lets storage-only USB devices attach freely while still enforcing the HID allowlist, so users keep their thumb drives working while the covert keyboard path stays closed.
Where it falls short: some administrative tasks require the on-premises server component, and the reporting is functional rather than pretty.
Pricing: Trial available. Standalone module lists at around $12 per user per month billed annually, with bulk and non-profit discounts.
Platforms: Windows.
Download: AccessPatrol on CurrentWare
Bottom line: Small teams that want explicit control over which keyboards and mice are trusted, without buying a full DLP suite, land here.
8. USB-Lock-RP – Best for on-premises Windows networks
USB-Lock-RP is a Windows-only, on-premises device control suite from Advanced Systems International with a heavy focus on real-time blocking. It ships with dedicated protection against keystroke injection and mouse-emulating USB attacks, and its AES-256 encryption for authorised drives gives the same policy engine a data-loss angle. The product runs entirely inside your network with no cloud dependency, which some regulated buyers still insist on in 2026.
Where it falls short: no macOS or Linux client, and pricing is opaque without a sales conversation. The interface shows its age compared with newer web consoles.
Pricing: Per-endpoint quote. Two years of software assurance is included with every licence.
Platforms: Windows.
Download: USB-Lock-RP by Advanced Systems International
Bottom line: If a customer or auditor requires an on-premises Windows tool with no outbound telemetry, this is the specialist option.
How to pick the right one
The choice reduces to platform, budget, and how many machines you need to cover.
- If you run Linux on the desktop or server, install USBGuard. Nothing else on Linux gives you kernel-level HID enforcement with a mature package in every major distro.
- If your fleet is Windows and you already pay for Microsoft 365 E5, turn on Defender for Endpoint device control. The licence is sunk cost and the coverage is real.
- If it is one personal Windows PC and you want protection tonight, install Beamgun. Five minutes, free, and it stops the loudest attack path.
- If you manage 25 to 500 Windows endpoints on a tight budget, ManageEngine Device Control Plus gives you a real console without enterprise pricing.
- If your environment mixes Windows, macOS, and Linux and compliance matters, Netwrix Endpoint Protector is the widest single-agent coverage on the market.
- If you already run Ivanti and need audit-ready device policies, Ivanti Device Control fits into that stack cleanly.
- If your priority is a per-HID allowlist without buying full DLP, AccessPatrol is the tightest fit.
- If your rules forbid cloud consoles or outbound telemetry, USB-Lock-RP is the on-premises Windows specialist.
FAQ
What is a BadUSB attack?
BadUSB is the general term for a USB device that abuses its right to declare itself as any USB class. A cheap flash drive can be reflashed to present as a keyboard, then type commands the operating system trusts because the operating system trusts keyboards. The XDA monitor story is the same trick in a display bezel. HID protection tools stop the attack by refusing to trust new keyboards without explicit approval.
Can antivirus block a rogue USB keyboard?
Not on its own. Antivirus scans file contents, and a HID injector never writes a file. The keystrokes are typed into whatever application already has focus, so the payload arrives as legitimate user input. You need a device control layer that filters at the USB stack, which is what the tools on this list provide.
Does Windows have built-in USB HID protection?
Partly. Windows 11 has device installation restriction policies in Group Policy and Intune, and Microsoft Defender for Endpoint adds full device control when you have the right licence. Home editions of Windows have very limited controls. For a home PC without Defender, a lightweight tool like Beamgun fills the gap.
Is USBGuard available on macOS?
No. USBGuard is Linux only. On macOS the closest equivalents are the device control features in Defender for Endpoint, Netwrix Endpoint Protector, and other enterprise agents. Objective-See’s ReiKey detects keystroke event taps at the software layer, which is a related but different threat model.
Is it better to disable all USB ports?
Almost never. Blocking every USB port breaks legitimate keyboards, mice, dongles, and audio interfaces. The point of HID protection is to allow the peripherals you actually own while blocking anything new. Every tool on this list supports an allowlist for exactly that reason.
How does a monitor pretend to be a keyboard?
USB Type-C carries USB data alongside DisplayPort video. A monitor with a USB hub can also expose a HID interface. The operating system enumerates HID devices as soon as they attach and starts accepting input from them straight away. The XDA case showed a monitor that used that channel to type an install command into the active shell. A HID allowlist rejects the interface before the operating system starts listening.
