Reverse-engineering your client should take weeks, not minutes.
TrustSig Protect compiles your JavaScript and WebAssembly into a self-defending, self-encrypting client that is rebuilt unique on every release. Automated attack tooling breaks outright. A human attacker starts over every time you ship.
Built in the EU. Request a demo to see it on your own bundle.
nextKey(state)One source function across three releases. Same behaviour, nothing an exploit can reuse.
Shipped to the browser is shipped to the attacker.
Every line you send to the client is a free map: readable logic, string keys, the exact call that talks to your server. With off-the-shelf tooling, lifting your anti-fraud signals, licensing or key logic is a quick, automatable job. Protect makes that job slow, manual, and worthless on your next release.
A dozen layers, across JavaScript and WebAssembly.
Defense in depth: a dozen independent layers, and beating one buys nothing because the next is already different on your next build. Open any layer to see what it does.
See the full protection stack on your own bundle.
Book a demoEvery build is a new puzzle.
Custom virtualization plus polymorphic, per-brand, per-release output means an attacker's work is thrown away on every update. Automated and replay tooling simply stops working, and a human has to start over each time you ship.
The same logic, with nothing left to read.
Illustrative and simplified, real builds are larger, fully randomized and unique per release. The shape is the point: readable logic, keys and the network call become bytecode only our VM runs.
Readable logic, keys and network calls become bytecode only our VM runs.
function nextKey(state) { state = state + 0x9E3779B9; state = (state ^ (state >>> 30)) * 0xBF58476D; return state ^ (state >>> 27);}const SITE_KEY = "ts_live_8f3a9c...";fetch("/collect", { body: JSON.stringify(signals) });// one opaque entry point; everything else is bytecode unique to THIS build__g(Uint8Array.from([0xA3,0x1F,0x7C,0x44,0x90,0xE2,0x05,0x3B,0xD7 /* rotated, per-build */]));// no readable math, no string keys, no obvious network call to hookEncrypted at rest. Decrypted for one instant.
Sensitive values are encrypted inside the binary and revealed only at the microsecond of use. The data payload is never assembled in plaintext, keys roll forward and are forgotten, and in-memory secrets re-key on a rolling window.
Decrypted only at the instant of use, then wiped. A memory dump yields noise.
- Streaming encryption: the payload never exists complete in memory.
- Rolling, per-use keys: no single key ever unlocks everything.
- Hardware-sealed keys, revealed only for the encryption instant.
- Every call between JavaScript and WebAssembly is an opaque encrypted packet.
Put your secrets somewhere a memory scraper can't reach.
Book a demoTouch it, and it locks you out.
Patch the code, hook a browser function or attach a debugger, and the client detects it, hides its memory and stops cooperating with that session. There is no bypass oracle: nothing ever tells the attacker whether they succeeded or why it stopped.
Honest about what client protection can and can't do.
Browser code can never be made mathematically un-readable, and anyone claiming otherwise is overselling. What world-class protection delivers is cost and time: it turns a quick, automatable break into a slow, manual, per-release grind, and pairs it with server-side active defense so a bypassed check still costs the attacker. That is the standard the strongest commercial DRM is held to, adapted to the browser.
TrustSig Protect, answered
No, and anyone claiming otherwise is overselling. Browser code can never be made mathematically un-readable. What world-class client protection delivers is cost and time: it turns a quick, automatable break into a slow, manual, per-release grind, and it makes a bypassed check still cost the attacker through server-side active defense. TrustSig Protect is engineered to that standard, the same philosophy as the strongest commercial DRM systems, adapted to the browser.
No. You choose the logic worth defending, your key derivation, anti-fraud signals, licensing or business rules, and that becomes virtualized and encrypted while the rest of your app ships normally. The output is compact and hardened so the footprint stays small.
Custom virtualization plus polymorphic, per-brand, per-release output. The bytecode our VMs run is unique to each build and each brand, and honeytokens rotate every build, so an exploit or replay tool written against one release is dead on the next and automated tooling simply stops working.
Anti-debugging, anti-tampering and anti-hooking detect a patched function, an attached debugger or a modified runtime, and the client hides its memory and stops cooperating with that session. Because there is no bypass oracle, nothing on the client ever tells the attacker whether they succeeded or why it stopped.
The protection is applied to the critical logic you choose, not your entire bundle, and the output is engineered for a small footprint. The hardened path runs inside our virtual machines while everything else stays native, so the protection is concentrated exactly where it earns its cost.
JavaScript and WebAssembly clients. With the Rust toolchain a single virtualize! annotation compiles a function into private bytecode run by an embedded interpreter, so the binary contains no readable operation. Snippets in the page are illustrative; real builds are larger, fully randomized and unique per release.
Yes, in philosophy. It applies the same cost-and-time defense the strongest commercial DRM systems rely on, adapted to the browser, and pairs it with server-side active defense so a bypassed client check still costs the attacker.
Book a demo of TrustSig Protect.
Tell us what you ship to the browser and what you need to keep out of an attacker's hands. We will reply by email to set up a demo on your own bundle.
- Built in the EU
- Demo runs against your own JavaScript or WebAssembly
- No payment or account needed to evaluate