Live transaction firewall for crypto wallets

Stop signing blind transactions.

Ciphera is a Transaction Firewall that sits between your self-custody wallet and the blockchain — explaining what you’re about to sign and blocking scams before they drain your funds.

Supports EVM first
Decodes approvals, swaps, bridges & signatures in real time.
Transaction Preview
Wallet: 0x9c...4a1 · Network: Ethereum
Firewall Active
Intent
Approve spending for 1 token
Token
ScamCoin (SCAM)
Spending limit
Unlimited (can drain wallet)
To
0xF1...c0de · Unknown contract

Risk: This transaction lets 0xF1...c0de move all of your ScamCoin. Similar patterns appear in wallet-draining approvals.

Realtime analysis
21 checks run · 3 high risk
Why Ciphera
Built to fight modern signing scams.

Phishing sites and malicious dApps try to sneak in approvals, permit signatures and hidden calls. Ciphera decodes raw transaction data into human language and blocks patterns that look like wallet drainers.

🔍
Human-readable decoding
Turn hex and ABI blobs into clear “here’s what will happen” explanations — token movements, approvals, contract intents and more.
🛡️
Firewall rules for Web3
Detect high-risk patterns like unlimited approvals, stealth transfers, suspicious operators, and blocked contracts before the wallet signs anything.
⚡
Zero-friction experience
Works as a lightweight extension / plug-in sitting between dApp and wallet. No seed phrases, no custody — you stay in control.
DeFi traders
Protect your LP positions, yield-farming vaults and leverage accounts from malicious approvals and fake frontends.
NFT / mint hunters
Catch wallet-drainer mints that hide setApprovalForAll calls behind hyped drops and airdrops.
Power users & teams
Give treasuries, multi-sig signers and whales an always-on safety layer for every on-chain action.
How it works
Your always-on signing co-pilot.
1
Intercept
When a dApp asks your wallet to sign a transaction or message, Ciphera intercepts the payload first — before it ever reaches your private keys.
2
Decode & simulate
We decode contract calls, run static checks, and simulate token flows to see what would actually happen on-chain.
3
Explain & protect
You get a plain-language explanation plus a risk verdict. Safe flows are greenlit; shady patterns are highlighted or blocked by the firewall.
Secure by design.

Ciphera never touches your seed phrase or private keys. All checks run on transaction data and public chain state. You decide what to sign — but now with real context.

Non-custodial · keys stay in wallet
Local & cloud analysis modes
Replay protection & domain binding
Self-custody wallets only (no Binance / WazirX)

Initial support:

Ethereum mainnet
Polygon
Arbitrum
Optimism
More EVM chains soon
For builders. Early access will ship with a lightweight JS SDK and webhook alerts so self-custody wallets and dApps can plug the Ciphera firewall directly into their own UX.
Product demo
See Ciphera in action before you connect.

We’re recording a live walkthrough of Ciphera catching real-world scam transactions, approvals and signatures.

Drop your email and we’ll send you the private demo link plus updates as we roll out new firewall rules and chain support.

MetaMask + EVM chains Approvals & swaps Signatures & permits
Demo status
Private alpha recording
Short loom-style video showing how Ciphera intercepts and rewrites a risky DeFi approval before you sign.
Demo link will appear here once you join the early access.
Stop signing in the dark. Join the Ciphera early access.
Be the first to test the Transaction Firewall with your own wallet and real-world dApps.
FAQ
Answers before you connect your wallet.
Is Ciphera a wallet?
No. Ciphera is a firewall layer that sits between your existing wallet (like MetaMask) and dApps. It never has custody of your funds or keys.
Will Ciphera slow down my transactions?
We’re optimized for sub-second analysis on common flows like swaps and approvals. For suspicious transactions, we intentionally slow down just enough to show you what’s really happening.
What types of scams can it catch?
Unlimited approvals, malicious spenders, wallet drainers, fake airdrops, risky signatures (e.g. permit, typed data), and abnormal token flows. We’re constantly training on new patterns.
How do I integrate Ciphera?
In early access, Ciphera will ship as a browser extension. dApp and wallet SDKs are planned so teams can plug the firewall directly into their UX.
Does Ciphera work with Binance, WazirX or other exchanges?