You did not fully understand my post. I mentioned that the inside-webbrowser attacks (those that do not break out of the web browser) are equally dangerous for Linux and Windows users. The other three factors (Malicious downloads, Remote access & exposure, Supply chain) are far less dangerous for Linux users, because in most cases, they are prepared for Windows users. So yes, in rare cases, Linux users can still be infected.
You’re right—I conflated two different things.
Restating your point accurately
- In-browser / “no breakout” attacks (phishing, credential theft, OAuth consent scams, malicious web apps, session hijacking, fake login portals) are largely OS-agnostic, so Linux and Windows home users are equally exposed in terms of account takeover and fraud.
- Post-browser stages (malicious downloads/execution, remote access tooling misuse, many commodity payloads, some supply-chain paths) are often Windows-optimized, so a lot of mass campaigns will simply “fit” Windows better and fail more often on Linux desktops.
That framing is reasonable for typical consumer threat activity.
Nuance worth keeping (so the thread stays accurate)
Even though Linux is often “less affected” by commodity Windows payloads, I wouldn’t call the other vectors categorically “far less dangerous” across the board—more like “lower hit-rate from mainstream Windows-focused crimeware,” because:
- Malicious downloads: Windows EXE/MSI payloads won’t run on Linux, so many opportunistic infections fail. But Linux-targeting via shell scripts, malicious AppImages, trojanized deb/rpm packages, or “paste this curl|bash” lures still happens (just less common for home users).
- Remote access & exposure: the “classic” RDP brute-force story is Windows-heavy, yes. But home Linux users can still be hit via router compromise, exposed SSH, weak passwords, or installing remote support tools. Lower frequency, not zero.
- Supply chain: Windows has a huge ecosystem of third-party installers and update utilities (a common infection path). Linux’s “repo-first” model reduces that significantly if the user sticks to official repos. But the risk returns if users add random PPAs/third-party repos or run scripts from the web.
Security conclusion in your terms
- If the threat is account takeover / fraud via the browser: Linux and Windows are in the same danger zone.
- If the threat is commodity malware payload execution: Linux desktop generally gets a “free reduction” in exposure because so much is Windows-shaped.
- Linux can still be infected, but for home users it’s typically less common and more dependent on risky behavior (third-party repos, scripts, insecure remote exposure).
That’s the most accurate way to express what you meant without overstating it.
This will not recover the Linux security Level on Windows. For example, the ClickFix attack (47% of initial attack methods) can often bypass all the above hardening. I noticed your additional notes about ClickFix, but most Windows users are not so well-informed to be prepared for such attacks.
You’re correct about the practical problem: the “Linux-like” posture isn’t just *a list of toggles*—it’s a workflow model (repo-first installs + low execution freedom) and a user-behavior model. Windows hardening that doesn’t materially reduce “user can execute arbitrary commands/binaries” won’t stop ClickFix-style social engineering reliably.
Also, I can’t verify the “47% of initial attack methods” figure from what you’ve provided here; I’ve seen wildly different percentages depending on dataset/time window and what the author counts as “initial access,” so I wouldn’t anchor the discussion to a single number without a source.
Why ClickFix can bypass the “basic Windows hardening” list
Most ClickFix variants succeed because they:
- Don’t need an exploit.
- Don’t need to drop a traditional “known-bad” file up front.
- Turn the user into the installer (PowerShell/Run dialog/mshta/rundll32/script hosts), often using legitimate Windows components.
So Defender + SmartScreen + “be careful what you install” helps, but it’s not equivalent to “software can only come from trusted repos.”
What gets Windows closer to the Linux ‘repo-only’ security model
To approximate that model on Windows, you generally need
execution control (allowlisting / policy) more than “AV + updates.”
Low-to-medium friction (good for relatives):
- Use a Standard User account (no local admin) and keep UAC at a strict setting. This alone breaks a lot of “paste-and-own” flows that need elevation/persistence.
- Reduce script host exposure (common ClickFix lanes): disable/limit Windows Script Host where feasible; remove legacy components you don’t need (e.g., PowerShell 2.0).
- Enable Microsoft Defender ASR rules (Attack Surface Reduction) in a conservative set. Some ASR rules specifically target “living-off-the-land” abuse patterns. (This is one of the few built-in controls that meaningfully changes outcomes for these campaigns.)
- Browser isolation where possible: Microsoft Defender Application Guard / isolation features (availability depends on Windows edition and hardware). This helps when the website itself is hostile.
Higher assurance (more like “repo-only”), higher effort:
- Application allowlisting (WDAC or AppLocker): restrict execution to trusted publishers/paths so “random stuff from Downloads/AppData” (and many ClickFix payload drops) simply won’t run.
- Constrained Language Mode (typically paired with allowlisting) to reduce PowerShell’s abuse potential.
- “Default deny” for user-writable locations (common technique via WDAC/AppLocker/SRP patterns): stops a large class of commodity droppers.
Key point for the thread
If the goal is “Linux repo-style safety for non-technical relatives,” Windows can get close only when you add
policy-based execution restrictions (allowlisting / default deny) or you choose a Windows mode/profile that effectively does that. Without that, ClickFix remains a “user-in-the-loop installer” problem that basic hardening often won’t catch in time.
Conclusion
Your critique is fair: the earlier checklist is “good hygiene,” but it doesn’t recreate Linux’s biggest practical desktop advantage (controlled software supply + reduced arbitrary execution). To make Windows comparable against ClickFix-class social engineering, you need to move from “detection” to
restriction (allowlisting/ASR/script-host reduction) and pair it with a non-admin daily account.
Agree. However, the chance of being infected in this way will always be far smaller on Linux, until it is far less popular than Windows.
Mostly agree (with a couple of important caveats)
For typical home users facing mostly
commodity cybercrime, lower desktop market share generally does translate into a lower “background radiation” of Windows-shaped payloads and lures. A lot of campaigns are built around Windows-native execution and persistence methods, so Linux users are less likely to be hit by the exact same mass-delivered tooling.
Caveats worth keeping in the thread so it stays accurate
- “Less popular” reduces mass targeting, not the OS-agnostic part: phishing, credential theft, OAuth consent scams, and malicious extensions remain broadly comparable across OSes because the prize is the account/session, not the kernel.
- Linux can still be a good target in specific niches: developers, admins, crypto users, and people running services (SSH, containers, self-hosted apps) can be targeted because the value is higher, regardless of desktop popularity.
- Behavior can erase the advantage: if a Linux user regularly adds random PPAs/third‑party repos, runs “curl|bash” instructions, or disables security defaults, the “market share safety margin” shrinks fast.
Practical security takeaway
It’s fair to say Linux desktop will likely remain less impacted by many Windows-centric, web-to-payload social engineering chains as long as Windows dominates the consumer endpoint ecosystem. The safest framing is:
Linux often has a lower hit-rate for commodity payload execution, but not a fundamentally different exposure to browser-and-identity attacks.
If you want to move the discussion forward, the most useful next step is to separate the threat model into two buckets—
account compromise vs
endpoint payload execution—because OS choice matters much more in the second bucket than the first.