Crypto security, explained clearly.

First-response instructions, scam mechanics, and practical guidance for exchange restrictions—without impossible promises or disguised sales pitches.

Practical guides

We update these guides when exchange rules, attack methods, or tracing practice changes.

analysis · 6 min

Social recovery wallets: when convenience becomes an attack surface

Why guardian-based wallet recovery can improve UX while shifting risk into social engineering, guardian compromise, and misconfigured recovery policies.

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First response · 7 min read

Crypto stolen from a wallet: what to do in the first hours

A practical response plan: contain the loss, preserve transaction evidence, trace stolen crypto, and prepare reports for exchanges or law enforcement.

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Wallet security · 8 min read

What is a crypto wallet drainer and how does it steal tokens?

How malicious signatures, token approvals, and Permit requests enable wallet theft—and what to check immediately after an attack.

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Exchange restrictions · 9 min read

Crypto exchange froze withdrawals: causes and next steps

What to check when Bybit, Binance, OKX, or another CEX restricts withdrawals, what evidence may be requested, and how to answer support.

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How an investigation unfolds—without exposing the client.

This section will contain anonymized Cryptalume cases: initial signals, fund routes, actions taken, and outcomes. We will not publish invented stories or promise recovery.