In 2025, crypto security isn’t about if an attack will happen, it’s about when. And with over 80% of stolen funds stemming from wallet breaches, it's clear the weakest link isn’t just smart contracts or exchanges, it’s the wallet itself.

That’s why Cyvers is launching a game-changing capability: Active Co-Signing.

As the Web3 security leader with a proven record of intercepting over $10B in losses and protecting top exchanges and custodians, Cyvers is now embedding its real-time threat intelligence into wallet transaction signing itself, acting as an active co-signer to stop malicious actions before they reach the chain.

The Problem with Today’s Wallet Security

Traditional wallet security, multi-sig setups, hardware wallets, and whitelists, offer a strong start. But we’ve seen time and again that even those measures fall short:

• WazirX lost $235M even with a multi-sig + hardware signing + third-party custody.

• Radiant Capital suffered a $50M breach after signers were compromised via malware.

• Bybit lost $1.5B in 2025 when blind-signing and compromised payloads allowed a complete wallet drain.

These were not failures of infrastructure. They were failures of context-aware threat prevention at runtime.

Cyvers as a Co-Signer: Security Built Into the Transaction Flow

Cyvers’ innovation lies in its ability to act as an intelligent co-signer for any transaction, integrated directly into your MPC or multi-sig wallet setup.

Here’s how it works:

1. Intercept the Transaction Before Signing
   When a transaction is initiated, Cyvers simulates it against a real-time threat intelligence engine.

2. Behavioral and Contextual Risk Analysis
   Cyvers analyzes:

• Wallet balance changes

• Contract state diffs

• Known malicious addresses

• Policy violations

• Unusual behavior and blind signing attempts

3. Threat Verdict: Sign or Block
   If no risks are flagged, Cyvers co-signs the transaction. If risks are detected, Cyvers denies the transaction, preventing damage proactively.

This is not just signature validation, it’s active risk-based decisioning baked into the transaction path.

Why Active Co-Signing Is a Game-Changer

• Stops Blind Signing Dead in Its Tracks
  No more trusting that signers have read every payload. Cyvers reads for them and signs only if it’s safe.

• Prevents Policy Violations & Sanctions Risks
  Cyvers screens counterparties in real-time, ensuring compliance is enforced at the transaction level.

• Fully Compatible with MPC/Multi-Sig Wallets
  Works seamlessly with platforms like Fireblocks, Gnosis Safe, Ledger Enterprise, and custom wallet stacks.

• Milliseconds of Latency, Billions Saved
  Cyvers simulates millions of transactions each month with sub-second response times, already proven in production with Ledger and others.

Real Incidents That Could’ve Been Prevented

What This Means for Wallet Providers and Custodians

With Cyvers Active Co-Signing:

• Wallets gain a policy-enforcing, AI-powered co-signer.

• Custodians can guarantee transaction integrity at runtime.

• Exchanges eliminate manual signer risk without adding friction.

• Compliance officers sleep easier knowing every outgoing transaction is vetted.

Final Thoughts: Trustless Doesn’t Mean Trusting Blindly

In a world of deepfakes, state-sponsored hacks, and wallet exploits disguised as legitimate transfers, signing a transaction isn’t just about keys, it’s about context.

Cyvers as a co-signer brings that missing context.

It’s not just prevention. It’s intelligent transaction control. And it’s the future of wallet security.

👉 Learn more or schedule a live demo: https://calendly.com/d/cqjd-77h-r6x/cyvers-first-call?utm_medium=blog&utm_campaign=shiri

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