Does a FiveM Anti Cheat Stop All Cheats? How to Check

No FiveM anti cheat stops all cheats, and that includes ours. So the useful question is not whether a FiveM anti cheat stops all cheats, but where its coverage stops. A page promising total protection describes an ambition, not a verifiable state. Take it as a prompt to find where your protection ends. Below: why coverage has edges, the four buckets an honest feature list sorts into, and six questions you can paste into a sales chat, ours included.

Why no FiveM anti cheat stops all cheats

Start with the platform itself. FiveM's own server security guide concedes it in the opening line: 'The anti-cheat team is always trying to improve the anti-cheat, but sometimes things slip through.' Cfx.re keeps an intake open for what it missed - a heading in the official ban FAQ reads 'What if I find cheats that I believe have gone undetected?' Three mechanics make a complete set impossible here.

• Every detection set has a date on it. It is a snapshot of what was catalogued at the last push; anything shipped afterwards sits outside it until someone gets a sample and works it. There is no published cadence for cheat releases, so a vendor quoting a turnaround is guessing.
• Some abuse never touches the game process. Cfx.re describes its own automated system as detecting 'external programs that attempt to inject information into the FiveM or RedM game clients'. That is a scope, and scopes have edges. What never touches the process is outside what an on-device scan can observe, by construction.
• Some abuse rides on legitimate traffic. A well-formed event carrying a dishonest number is not an injected cheat. It is a validation failure belonging to whoever wrote the script. The security guide names the values a server must check itself: money, state bags, inventory, position, experience and level, permissions and roles.

The shape of an honest claim is already on the record. Cfx.re's asset escrow update from October 2025 says 'no encryption method can be rendered completely impenetrable', then gives the goal as making unauthorised access as difficult as possible while monitoring for misuse. A limit, then difficulty plus monitoring. For detection mechanics, read what a FiveM anti cheat is; this post stays on boundaries.

Protection against all cheats: what that phrase actually claims

Read literally, it claims a finished set: every cheat that exists and every cheat that will exist, caught. The percentage variants sound measurable and are usually worse. When a page advertises a 99.9% detection rate, ask what the denominator is. There is no public, audited cheat corpus for FiveM and no published sample-sharing arrangement between vendors, so the number can only describe the samples that vendor holds.

There is a cheap calibration test. Open any vendor FAQ, count the questions, then count how many concern limits: boundaries, latency, what happens when something unseen appears. If that second number is zero while 'can I try before buying' makes the cut, you have learned what the page is for. An FAQ removes friction from a purchase; a limits question adds it.

The four coverage buckets every anti cheat claim sorts into

Throw away the flat feature list. Mod menus, aimbot, ESP, godmode, noclip and executors on one line with ticks beside them says nothing about confidence or timing. Sort every claim into four buckets defined by outcome and latency.

• Caught reliably, at the moment of the act. Deterministic and immediate: Script Hook V clients refused because sv_scriptHookAllowed defaults to false, modified base game files refused under sv_pureLevel (level 1 allows audio and known graphics mods; level 2 blocks all), client-created entities refused under sv_entityLockdown in strict mode, a net game event dropped via block_net_game_event. Most of that list is FXServer settings from the server commands reference that you already own.
• Caught behaviourally, with latency. A pattern has to accumulate first, so there is always a window in which the player is on your server, winning. The honest unit here is time, and Cfx.re's own cookbook frames server-side event interception as 'rate limiting, automatic warning/kicking'. How detection survives a rebuilt cheat is its own topic: detection after updates.
• Caught only by corroboration or human review. One signal is not enough, so a person assembles several. Cfx.re's screenshot-basic resource captures clients' 'game render targets' - useful evidence, not a verdict. Add clip and log correlation, identifier linkage and applicant pre-screening, and an admin has a case. Wrongful bans surface here: false positives and appeals.
• Genuinely out of scope. In its fall 2025 client release notes, Cfx.re warned that a vulnerability in ox_lib, a widely used open-source resource, 'could potentially allow malicious actors or cheaters to cause nearby players to crash'. The remedy was a resource update. No engine detects a bug in a legitimate script, which is why vetting a script before install is security work.

The fourth bucket is the one most readers need. If you installed an anti cheat and the problems continued, there is a good chance what is hurting you was never in scope.

Coverage map: bucket, example, and the question to ask

Fill this in from a vendor's answers, never their feature page. The fourth row matters most: it shows whether they have mapped their own boundaries.

Questions to paste into a vendor sales chat, ours included

Copy these verbatim. A vendor who answers all six concretely has earned a serious look. One who deflects on more than one has told you something.

• 'Split your feature list into two columns: detections your product performs, and FXServer settings I could set myself.'
• 'For each behavioural detection, how long is the window before you act, and what does the player experience during it?'
• 'Show me one real evidence package a detection produces, with identifiers redacted.'
• 'Name three categories of abuse you do not cover.'
• 'Where is your dated changelog, and what shipped in the last three entries?'
• 'When something appears on my server that you do not catch, what is the reporting route and who does the work?'

One free probe: ask whether sv_protectServerEntities is in their hardening advice. It sits in the deprecated table of the Cfx server commands reference, noted as 'Not implemented. Use sv_entityLockdown instead.' A vendor recommending it is working from folklore.

What number should I ask an anti cheat vendor for instead of coverage?

A coverage percentage is unfalsifiable; latency is measurable. The figure that changes your evening is how long a cheat operates before something acts - seconds, a round, a week, or never, because a human has to notice first. Ask for it per bucket.

Does FairShieldAC stop all cheats? No - here is our qualifier

Our published figure is 98%+ of known cheats and exploits. The word doing the work is known: catalogued as of our last detection push, and every push has a date, which is why the changelog is public.

The remainder, by category: builds shipped between detection pushes that nobody has seen yet, abuse that never touches the client process, and validation holes in resources you installed. What we run is real-time detection on client and server with behavioural analysis, an on-device deep scan that shares only an encrypted verdict, a global ban network screening at connect on HWID, IP, Steam and Discord, encrypted shuffled event triggers, and Members Lookup as a manual pre-screen for whitelist review. That stack does not add up to all cheats, and we will not write that it does.

The standard costs us something: it makes our marketing quieter than a competitor willing to write 'all cheats'. Put the six questions to us anyway.

Why an absolute claim is itself a reason to walk away

A vendor who writes 'all cheats' is telling you one of two things: either they have not mapped their boundaries, or they have and chose not to publish, in which case you find the map yourself at three in the morning. The inverse is the better buying signal. Naming your gaps unprompted means you went looking for them.

Questions server owners ask

Can any FiveM anti cheat detect 100% of cheats?

No. The reason is structural: a detection set reflects what was catalogued at its last update, so anything built afterwards sits outside it until a sample is worked. FiveM's own security guide says 'sometimes things slip through', and Cfx.re runs a public form for reporting cheats it missed.

What does '98%+ of known cheats and exploits' actually mean?

It means 98%+ of a defined, dated set: cheats and exploits catalogued as of the last detection push. It says nothing about cheats nobody has seen yet: that set cannot be measured. A coverage figure with no 'known' qualifier and no dated changelog behind it describes a private sample.

Why do cheaters still get on my server after installing an anti cheat?

Usually because the damage you are seeing was never in scope. Economy dupes through your own unvalidated server events, alt-account farming, boosting and resale all travel as legitimate traffic, and vulnerabilities in third-party resources need patching rather than detecting. Work out which class of abuse you have first.

Is a 99.9% detection rate claim real?

Ask what the denominator is. There is no public, audited cheat corpus for FiveM and no published sample-sharing arrangement between vendors, so there is nothing public for a figure to be 99.9% of. At best it describes the unaudited samples that vendor holds. Treat every detection percentage, ours included, as a claim about a private list.

What to do next

Build the coverage map before your next renewal: sort your provider's feature list into the four buckets, send the six questions to whoever sold it to you, then to the next vendor, and compare answers rather than adjectives. Ours are in the changelog and from our support team; what we charge is on the plans page. To grade a vendor across all eight criteria instead of this single claim, use the 2026 scorecard; for the field compared, the 2026 comparison; for where detection belongs, server-side versus client-side.