Updated August 2026

Rooting means giving yourself admin access to your own phone. Android locks the deepest parts of the system away even from the owner; root removes that lock, which is what makes full backups, system wide ad blocking, and serious automation possible.
Far fewer people root in 2026 than in 2016, mostly for good reasons: phones ship with less junk and many old root tricks became normal Android features, while banking and payment apps grew much stricter about modified phones. The cost went up while the payoff went down.
Every app here is verified against its own store listing or source repository, most recently on 6 August 2026; how we verify is spelled out further down. This page lists the root apps that pass that check, and just as importantly, the honest trade-offs and who should skip rooting entirely. Before you unlock anything, read the security section further down. For broader system tools, our tools and utilities guides are a good next stop.
If Google Wallet or Samsung Pay is part of your day, stop here. Contactless payment is the first thing root breaks and the workarounds are a moving target.
Unlocking trips the Knox eFuse, a physical one-way switch. Samsung Wallet, Pass and Secure Folder are gone permanently, even after a full unroot.
Many carrier models ship with OEM unlocking greyed out (Verizon Pixels are the classic case). Check Settings, Developer options, OEM unlocking before planning anything.
Ad blocking, debloating and backup all have credible no-root routes now: Private DNS, ADB, Shizuku. Try those first (see the alternatives-without-root section below).
If yes, you are the person rooting is still for. Jump to the apps.
Seven of the twelve cost nothing and five of those are fully open source, which matters more than usual when a tool has admin access to your phone. Magisk is the foundation to install first, and the catches here can genuinely bite: a bad LSPosed module can bootloop a phone, and KernelSU needs a compatible kernel.
Price, open source status, and the catch to know first; checked against each tool's own listing or repo on 6 August 2026. Magisk is the foundation the rest build on.
| App | Price | Open source | The catch |
|---|---|---|---|
| Magisk | Free | Yes | Bootloader must be unlockable first |
| KernelSU | Free | Yes | Needs a compatible kernel |
| Swift Backup | Free, fair subscription | No | Cloud and automation sit behind the sub |
| Titanium Backup | Free, one-time Pro key | No | No update since 2019; menus are a maze |
| AdAway | Free | Yes | Lives on F-Droid, not Play |
| Greenify | Free, donation tier | No | Last Play update August 2024 |
| MiXplorer | Free via XDA; paid Silver listing on Play | No | Official home is XDA, not Play |
| LSPosed | Free | Yes | A bad module can bootloop you; use the maintained Vector fork |
| Viper4Android | Free | n/a | Installer last updated February 2024; fiddly setup |
| Tasker | $4.49 one-time, free trial | No | The learning curve is real |
| App Manager | Free, no ads | Yes | F-Droid install, aimed at power users |
| 3C All-in-One Toolbox | Free with ads, low-cost sub | No | Contains ads label on the free version |
Root foundation
Free and open source · latest release v30.7, 23 February 2026 · no ads, no purchases · by topjohnwu · official downloads on GitHub only · checked 6 August 2026
This is the foundation almost every other root app builds on, so install it first. Magisk roots your phone systemlessly, which means it leaves the system partition untouched and lets you hide root from banking and payment apps. The modules system is the magic: it bolts on tweaks without flashing anything risky. Updates land fast after new Android releases.
Developer topjohnwu is blunt about where to get it: "Github is the only source where you can get official Magisk information and downloads," says the official Magisk README, so treat any Play Store listing named Magisk as a fake. Skip rooting entirely if your bootloader cannot unlock; nothing else on this page starts without Magisk or an equivalent.
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Cleaner root setup
Free and open source · latest release v3.2.5, 23 June 2026 · no ads, no purchases · by tiann · GitHub only · checked 6 August 2026
The newer kid that has quietly won over a lot of tinkerers, KernelSU grants root at the kernel level instead of through a patched boot image. It suits people on supported devices who want a cleaner, harder to detect setup. The app based root control is genuinely slick, and its module support keeps growing. The project describes itself plainly: "KernelSU is a root solution for Android GKI devices. It works in kernel mode and grants root permission to userspace apps directly in kernel space," per the KernelSU documentation. Choose KernelSU over Magisk when your phone runs a GKI kernel, roughly Android 12 and newer, and you want the cleaner kernel-level setup; choose Magisk for the widest device support and the biggest module ecosystem. Skip this if your kernel is unsupported; check the compatibility list before flashing anything.
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Modern backups
3.6 stars from 7,851 reviews · 500K+ downloads · free, subscription IAP from $0.99 to $29.99 · no ads · by SwiftApps.org · Play listing updated 30 July 2026 · checked 6 August 2026
The go to for backing up apps, data, call logs, and messages, and the modern answer to the old Titanium days. Swift Backup feels like a real 2026 app, with a clean interface and proper cloud sync to Google Drive or your own storage. Root unlocks full app data backups that survive a wipe. Skip this if you refuse subscriptions; the cloud sync and automation you would actually want sit behind one.
↑ Back to the comparisonBackup depth
3.0 stars from 362,149 reviews · 10M+ downloads · free, one-time Pro key sold separately · no ads · by Titanium Track · Play listing last updated 24 November 2019 · checked 6 August 2026
The grizzled veteran of root backups, still trusted by people who have used it for a decade. Titanium Backup looks dated and the menus are a maze, but nothing matches its control over freezing, batch restoring, and migrating apps with data intact. It suits old hands who value depth over polish. The app has not seen an update since November 2019 and struggles on modern Android, so treat it as legacy; Swift Backup, covered above, is the maintained way to do this now. Skip this if you are starting fresh; a 2019 app on 2026 Android is for old hands restoring old backups only.
↑ Back to the comparisonSystem adblock
Free and open source · F-Droid version 6.1.4, 15 November 2024 · no ads, no purchases · checked 6 August 2026
Once you block ads at the system level, you never go back. AdAway uses a hosts file to kill ads across every app and browser at once, not just the ones with built in blockers. On a rooted phone it writes directly to the system for the cleanest results, and pages load noticeably faster and lighter. Set it once and forget it. Skip this if installing from F-Droid is a step too far; the no-root blockers linked below get you most of the way.
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Battery drain
3.5 stars from 320,362 reviews · 10M+ downloads · free with a donation tier · no ads · by Oasis Feng · Play listing last updated 31 August 2024 · checked 6 August 2026
Greenify hibernates apps that misbehave in the background, and with root it can hush them far more aggressively than any standard battery tool. It can tame chatty social and shopping apps that refuse to sleep, and the difference in standby drain is real. It pairs well with a good cleaner from our cleaner app picks. Its last Play update was 31 August 2024, so treat it as mature rather than actively developed. Skip this if your phone is recent; modern Android battery management does most of this on its own now.
↑ Back to the comparisonPower users
Free via XDA · the Play route is MiXplorer Silver: $6.99, 4.0 stars from 4,064 reviews, 100K+ downloads · no ads · by Hootan Parsa · checked 6 August 2026
The file manager power users swear by, and a perfect match for a rooted phone. MiXplorer browses root protected system folders, edits permissions, and handles archives and cloud accounts without breaking a sweat. It looks unassuming but it is endlessly capable and refreshingly ad free. Skip this if sideloading from an XDA thread makes you nervous; a store-only user will be happier in our wider file manager guide.
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Deep tweaks
Free and open source · maintained fork Vector v2.2, 4 August 2026 · no ads, no purchases · by JingMatrix · checked 6 August 2026
If you want to bend Android to your will, LSPosed is the gateway. It revives the Xposed framework on modern, Magisk rooted devices and lets you run modules that tweak system behavior, hide root, or customize apps deeply. It suits confident tinkerers, since a bad module can cause a bootloop. It is free and open source, but note the original LSPosed project was archived in March 2025; development continues in JingMatrix's fork, renamed Vector, at v2.2 as of 4 August 2026. The module scene is still active, with a hack for almost anything you can imagine. Skip this if you cannot rescue a bootlooped phone yourself; module experiments assume you know the adb escape route.
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System audio
Free · community maintained · repackaged installer v87, 26 February 2024 · no ads, no purchases · checked 6 August 2026
The reason a lot of people root in the first place, this is a system wide audio engine that transforms how your phone sounds. Viper4Android adds a proper equalizer, convolver, and effects that apply to every app, from Spotify to YouTube to games. Dialing in the settings takes patience, but headphone audio comes alive once it clicks. Pairing it with decent earbuds is genuinely night and day, and the project is community maintained and moves slowly; the installer's latest release dates to 26 February 2024. Skip this if you expect plug and play audio; this is a project you tune, not an app you install and forget.
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Automation
4.0 stars from 56,005 reviews · 1M+ downloads · $4.49 one-time on Play · no ads · by joaomgcd · Play listing updated 24 February 2026 · checked 6 August 2026
Tasker automates your phone, and root supercharges what it can reach, like toggling system settings, killing processes, or running shell commands on a schedule. It suits anyone who loves the idea of their phone reacting to context on its own. There is a learning curve, but the community profiles ease you in. At $4.49 one time on Play, checked 6 August 2026, it remains the most powerful automation app on Android. Skip this if you will not spend an evening learning it; casual users get more from built-in Modes and Routines.
↑ Back to the comparisonApp auditing
Free and open source · F-Droid version 4.1.0, 30 June 2026 · no ads, no purchases · by Muntashir Al-Islam · checked 6 August 2026
An open source Swiss army knife for anyone who likes to know exactly what their apps are doing. App Manager exposes activities, services, permissions, and trackers, and with root it can block components, freeze apps, and strip out unwanted behavior. Point it at a sketchy install to audit it before trusting it. It respects your privacy by design. Skip this if you just want a simple uninstaller; this is an audit tool with a power-user learning curve.
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System dashboard
4.3 stars from 15,644 reviews · 1M+ downloads · free with ads · IAP from $0.49 to $16.99 · by 3c · Play listing updated 20 June 2026 · checked 6 August 2026
When you want a single dashboard for your rooted system, this is the one to keep installed. 3C bundles a task manager, system monitor, app controller, and tuning options into one dense but powerful interface. It suits people who like to see CPU, battery, and memory stats at a glance and act on them. A low cost subscription or license unlocks the deeper system tweaks. Skip this if ads or dense menus annoy you; the free tier carries a Contains ads label on Play and the interface shows everything at once.
↑ Back to the comparisonBefore you read a single word about root apps, find out whether your phone can be rooted at all. In 2026 every root method starts by unlocking the bootloader, and a large share of phones are blocked before that step. Spend ten minutes on this check and you may save yourself a wasted weekend.
Some phones are a hard no, full stop. Verizon Pixels have never allowed bootloader unlock and never will. US and Canada Samsung models on the Snapdragon chip cannot unlock either, and neither can any carrier-locked AT&T or Verizon Samsung. Any Samsung already updated to One UI 8 has lost the ability for good. The reliable yes is a factory-unlocked Google Pixel that is not the Verizon variant, which is why almost every guide quietly assumes you own one.
Three things decide your fate: the OEM unlocking toggle in Developer options, the manufacturer's own unlock policy, and whether the community ever built a tested root method for your exact model. The toggle is the first gate, since fastboot refuses to unlock until it is on.
Greyed out has two very different meanings. One is a temporary 7-day anti-theft wait that clears on its own if you keep the phone online and signed in. The other is a permanent carrier or CID lock that never clears. On most US carriers Google does not enable the toggle until the phone is SIM-unlocked.
Here is the concrete check. Go to Settings, About phone, and tap Build number seven times to expose Developer options, then look for OEM unlocking. Boot into the bootloader and run fastboot flashing get_unlock_ability; a 1 means unlock is permitted, a 0 means it is not. Then search XDA for your exact model number and carrier suffix, not the marketing name. A code like SM-xxxxU is a locked US variant.
An unlocked bootloader is necessary but not sufficient. A/B slots, dynamic super partitions, and the Android 13 and newer init_boot layout mean you must patch the correct stock image, and a model with no kernel source or active XDA following may never get a stable method.
If no maintained Magisk or KernelSU guide exists for your exact model, treat the phone as unrootable. One more warning: do not update a still-unlockable Samsung to One UI 8 to decide later. That update removes the ability permanently, and an April 2026 firmware change reportedly blocks downgrading back.
Unlock policy is set by the manufacturer, and it has tightened across the board. Here is where each major brand stands now.
The pattern is clear: the door is closing, not opening. If your phone is currently unlockable and you intend to root it one day, do it on the firmware you have rather than gambling that a future update keeps the option.
This is the practical, day-to-day list, not the security theory. For why root weakens the phone's defenses, see the security risk multipliers and why hardware attestation is the wall further down. Here are the named things that break the moment you unlock and root.
None of these have a dependable workaround in 2026. If even two items on this list matter to you, that is a strong reason to leave the phone stock.
There are three live root methods now, and the right choice depends mostly on your device rather than your preference.
All three require an unlocked bootloader, so the core trade-off is identical no matter which you use: Verified Boot is broken and the anti-tamper flag is tripped. The security section below applies equally to every method.
Two old habits no longer apply. Xposed died and came back as LSPosed running on Magisk; the original LSPosed repo is now unmaintained and lives on through forks like Vector, which supports Android 8.1 to 17, with LSPatch as the no-root option. Custom recovery is mostly history too. A/B and dynamic partitions mean there is no separate recovery partition, so TWRP is often temp-booted rather than installed. Rooting is now a boot-image or kernel job, not a flash-a-recovery job.
If you are choosing between methods, start with Magisk unless a guide for your exact model specifically recommends KernelSU. Mixing methods or following an outdated TWRP-based guide is one of the fastest ways to end up at a bootloop.
The BASIC, DEVICE, STRONG ladder is explained in the Play Integrity section of this page. This is what changed since then. SafetyNet shut down on 31 January 2025, and the migration to Play Integrity ended on 20 May 2025. Any app that was not updated broke, so every root-detection check that matters now runs through Play Integrity.
The May 2025 rule change tightened the defaults in plain terms. A rooted or unlocked phone now clears only BASIC by default. DEVICE now requires a locked bootloader. STRONG requires hardware-backed signals plus a security patch installed within the last 12 months on Android 13 and newer. So the patch level you neglected after rooting can now fail you on its own.
The labels translate like this. DEVICE means a genuine certified Android phone running approved software. STRONG means the hardware itself vouches that boot was not tampered with. Most banking and payment apps want DEVICE or STRONG, which is why root-hiding that used to work now falls short.
One honest nuance keeps people from chasing ghosts. Leaked keyboxes and Play Integrity Fix have spoofed even STRONG on some Pixels for a while, but Google revokes leaked keyboxes and the trick dies soon after. Treat STRONG spoofing as not dependable rather than impossible, and never build your daily banking around it.
Apps are also getting better at pushing you to fix the problem. The August 2025 library version 1.5.0 added in-app remediation dialogs through a new showDialog method, so instead of failing silently, more apps now prompt you to restore integrity, which on a rooted phone usually means reflashing stock. The direction of travel is one way: each release makes a modified phone easier to spot, not harder.
Rooting is a trade. You get control that Android normally refuses to give you, and in exchange you take on real risks that did not exist when rooting was at its peak. The short version: if your phone mostly needs to just work, and you bank and pay with it, the answer in 2026 is probably no.
If you keep a spare device or you genuinely enjoy maintaining your setup and accept that things break sometimes, rooting can still be worth it. The rest of this guide explains why, in plain terms, so you can decide for yourself rather than taking our word for it.
The headline benefit is real backups. With root, tools like Swift Backup can save every app together with its data and restore it all on a new phone, something Google's own backup still does only halfway. You also get ad blocking that covers every app and browser at once, debloating that truly removes preinstalled apps instead of just hiding them, and automation that can reach system settings ordinary apps cannot touch.
You can change how audio sounds everywhere, control how the battery is managed, and audit what your apps do behind your back. For tinkerers, that level of control is the whole point. The question is whether it is worth what root does to the phone's defenses, which is the next thing to understand.
Two protections sit at the heart of Android security, and rooting weakens both. The first is the application sandbox: normally every app runs walled off from the others and from the system, so even a malicious app can only reach its own data. The second is Verified Boot, which checks at every startup that the system has not been altered. Root removes the sandbox walls for any app you grant it to, and unlocking the bootloader breaks or sidesteps Verified Boot.
The practical consequence is blunt. A malicious app that obtains root has total control of the device. It can read or change any file, install a rootkit, hide itself from view, persist across reboots, and depending on the root method even survive a factory reset. On a stock phone the same malware would be trapped in its own corner. On a rooted phone there is no corner.
This is not only theory. Independent analyses of large device populations report that rooted phones encounter trouble far more often than stock ones. The figures cited are sobering: roughly 3.5 times more likely to meet malware, about 12 times more likely to carry a compromised app, and serious system compromise incidents around 250 times higher than on unmodified devices.
You can read the underlying writeups at Zimperium and Security Magazine. Treat exact numbers as estimates rather than precise odds, but the direction is not in doubt.
There is a quieter risk too. A rooted phone usually stops receiving official over-the-air security updates, so newly discovered vulnerabilities stay unpatched on your device. Android's monthly security bulletins regularly fix flaws that are already being exploited in the wild, which means the gap between a patched stock phone and an unpatched rooted one widens every month you go without updating by hand. Avast covers the broader picture of why rooting raises exposure.
To make this concrete, consider the "Godless" malware family. It gained root through apps distributed on app stores, then quietly installed a hidden backdoor that was used to push more malicious software onto the device. The point is not that this one threat is common today, but that it shows the pattern: once something gets root, it can entrench itself in ways that ordinary malware cannot. Pindrop documented it in detail at the time, though that writeup is no longer online.
If you have wondered why a banking app simply will not open on a rooted phone, the answer is the Play Integrity API, which replaced the older SafetyNet system. It lets an app ask Google whether it is running on a genuine, Play certified, untampered device. The reply comes back as up to three labels, and they form a ladder of strictness.
STRONG integrity cannot be passed on an unlocked or modified device, because it leans on a hardware root of trust the phone cannot fake. Banking, government, and DRM apps increasingly require DEVICE or STRONG, which is why hiding tricks that once worked now fail. You can see the official label definitions at Google Play Integrity.
Verified Boot builds a chain of trust starting from a hardware root of trust, up through the bootloader, and into the system partitions, so each stage confirms the next has not been tampered with. Rooting disables or sidesteps that chain, which is exactly why hardware backed checks fail on a rooted device.
The mechanism is documented by the Android Open Source Project. Because the attestation is signed by keys baked into the hardware, no software running on top of it can convincingly forge a clean result.
You will see "Play Integrity Fix" style modules that promise to restore passing verdicts. They can sometimes get a device through DEVICE integrity, but it is a losing game. Each time Google updates its checks, the modules break and have to be patched again, and none of them can reliably pass STRONG, because that is the level hardware attestation protects.
If your livelihood or daily payments depend on an app that wants STRONG, no module is a dependable answer. The Google Play Integrity overview explains what app developers are actually checking for.
Beyond the security picture, rooting breaks a handful of everyday things in concrete ways. Knowing them in advance saves a lot of frustration.
That last point deserves emphasis: the Knox or bootloader flag is permanent. You can flash back to stock and relock, but the record that the device was once unlocked does not go away.
If you have weighed all of the above and still want to root, you can at least reduce the odds of disaster. None of this makes rooting as safe as a stock phone, but it narrows the gap.
Here is the part many people miss: you can get a large share of the upside while leaving the phone stock, with no unlocking and no bricking risk.
If your worry is mainly junk apps and ads, this route gets you most of the way there with none of the security cost. For tools that help on a stock phone, our antivirus picks and wider tools and utilities guides are a sensible next stop.
If your phone mainly needs to just work, and you bank, pay contactless, and rely on it every day, do not root it. The benefits no longer outweigh the hassle, and the security trade-off is real, which is exactly why far fewer people root now than ten years ago.
Root suits people with a second device, or those who genuinely enjoy maintaining their setup and accept that things break sometimes. If that is not you, leave the bootloader locked and use the no-root alternatives above.
Work out what you actually want first, because stock Android now covers a lot of it. Per-app battery limits, granular permissions, built-in screen recording, scoped file access, system dark mode, and Private DNS all ship without root, so several classic reasons to root are simply gone. For the goals that remain, there is usually a no-root path.
dns.adguard-dns.com (the legacy dns.adguard.com still resolves) or use NextDNS to block most ads in three taps with no app at all. AdAway in non-root VPN mode is an alternative, but it takes the single Android VPN slot and conflicts with any other VPN.pm uninstall -k --user 0 <package>, or use the UAD GUI. Be aware an OTA or factory reset can restore the packages.Two honest notes. SAI is in maintenance mode now, and Shizuku's setup confuses first-timers, so read the official guide before you give up on it. For most people this list delivers the bulk of what they wanted from root with none of the security cost.
If you have read all of the above and still want to go ahead, this framing narrows the odds of a disaster. It is not a step-by-step how-to, because the steps differ by model and the page's view is that limits matter more than instructions.
Rooting in 2026 is for people who keep a spare phone and enjoy the maintenance. If that is not you, leave the bootloader locked and use the no-root options above.
| Module | What it does | Works with | The catch |
|---|---|---|---|
| Systemless Hosts | Gives AdAway a place to write its blocklist without touching /system | Magisk | Toggle it in Magisk settings first, or AdAway offers VPN mode instead |
| Zygisk Next | Standalone Zygisk implementation | KernelSU, APatch | Needed before any Zygisk-based module runs outside Magisk |
| Shamiko | Hides root traces from apps on the DenyList | Magisk + Zygisk | Requires Enforce DenyList turned OFF; counterintuitive but documented |
| Play Integrity Fix (forks) | Spoofs device fingerprint to pass DEVICE integrity | Magisk, KernelSU | Repos get taken down; breaks each time Google rotates checks; nothing passes STRONG on an unlocked bootloader |
| Tricky Store | Key-attestation spoofing via a keybox file | Zygisk-capable root | Google revokes leaked keyboxes; treat any working setup as temporary |
| LSPosed (Vector, the JingMatrix fork) | Keeps the Xposed framework alive on current Android | Magisk, KernelSU | The original repo was archived in March 2025; use the maintained fork |
| BCR (Basic Call Recorder) | Clean systemless call recording | Magisk, KernelSU | Legality of call recording depends on your country |
Install one module at a time from the Magisk app repo, XDA, or the developer's GitHub only. Before experimenting, learn the rescue route: adb wait-for-device shell magisk --remove-modules strips all modules if a bad one bootloops the phone.
| What breaks | Why | Realistic options in 2026 |
|---|---|---|
| Google Wallet tap-to-pay | Fails DEVICE integrity | DenyList + Shamiko + a Play Integrity Fix fork restores it for a while, then an update breaks it again; carry a physical card |
| Banking apps | Play Integrity plus their own root detection | Shamiko hides root from most; some detect anyway, the only reliable fix is an unrooted second device |
| Netflix / Prime in HD | Widevine drops L1 to L3 when the bootloader unlocks | No module fixes DRM level; accept SD or unroot and relock |
| Anti-cheat games | Client-side scanners, not just Play Integrity | Hiding works intermittently and the ban risk is yours (game tooling without root) |
| OTA updates | Modified boot image | Use Magisk's Install to Inactive Slot flow after the OTA downloads, never reboot blind |
| Samsung extras (Wallet, Secure Folder) | Knox eFuse blows permanently | Nothing restores them, even full unroot; decide before you trip Knox |
For most of them, yes. A few, like Tasker and Swift Backup, run without root in a limited form, but everything on this list does its best work with full access. The usual path in 2026 is unlocking the bootloader and patching the boot image with Magisk, and the exact steps depend on your device. Unlocking wipes the phone, so back up before you start.
Assume it will not, and treat anything that still works as a bonus. Play Integrity checks in 2026 are much stricter than the old SafetyNet era, and many apps now use hardware backed checks that hiding tools cannot reliably beat. Magisk's DenyList and similar tricks help with some banks, then break after an update. If mobile banking or contactless payment matters to you, that alone is a good reason not to root.
Only as safe as the apps you grant it to. Root is admin power, so a malicious app with root can read or change anything on the phone. Stick to well known, open source, or long established tools like the ones above, and deny anything you do not recognize. Magisk asks for your approval every time a new app requests root, which gives you a clear chance to say no.
In practice, often yes. The rules vary by country and brand, but many service centers will turn away a phone with an unlocked bootloader, and Samsung devices trip a permanent flag that survives unrooting. Some repairs may still be covered where the law is on your side, but it can turn into an argument. Decide as if the warranty were gone, and you will not be surprised.
Usually, yes. You can uninstall Magisk or flash the official firmware for your model, relock the bootloader, and the phone behaves like new for updates and most app checks. Permanent flags, like the one on Samsung phones, stay tripped no matter what. Learn the restore steps and download the firmware before you root, not after something breaks, because that is exactly when you will need them.
Magisk, since it provides the root access everything else depends on and includes the module system that powers the rest. Right after that, set up a backup tool like Swift Backup so you are protected before you start experimenting. Then add an ad blocker and any tweaks to taste. Build your setup slowly and test after each change, because finding which module broke the phone is much easier one step at a time.
Yes, measurably. Rooting removes the application sandbox for any app you grant root to, and unlocking the bootloader breaks Verified Boot, so the phone can no longer prove its system is untampered. A malicious app with root can read or change anything, hide itself, and persist across reboots. Independent analyses report rooted devices encounter malware and serious compromise far more often than stock ones. A rooted phone also usually stops receiving official security updates, so known flaws stay unpatched.
It has happened. The "Godless" malware family, for example, gained root through apps distributed on app stores and then installed a hidden backdoor to push more malicious software. This is more likely if you install apps from outside trusted sources or grant permissions without reading them. On a stock, locked phone the sandbox limits what such an app can do, which is one of the strongest arguments for leaving the bootloader locked.
Not in the way that matters most. Both Magisk and KernelSU (along with APatch) require unlocking the bootloader, which breaks Verified Boot and trips the same permanent anti-tamper flag, so the core security trade-off is identical. KernelSU grants root at the kernel level, which can be harder for some apps to detect, but it does not restore the protections that rooting removes. Whichever you choose, the safety still comes mostly from granting root only to apps you trust.
No, and it never has been. The developer states that GitHub is the only source for official Magisk information and downloads, so treat anything named Magisk on the Play Store or on an APK site as a clone. Get it from the official topjohnwu releases page on GitHub and nowhere else.