Crypto Hacks and Security, Page 5

Aufgerissener Briefumschlag mit gebrochenem Wachssiegel, quer darueber ein Stahl-Angelhaken, daneben ein Metallgeraet zur Schluesselaufbewahrung und eine Muenze mit eingepraegtem Bitcoin-Zeichen

Phishing Email From the Real Sender Address: How to Check a Wallet Security Warning

An alleged security warning to wallet customers travelled through the manufacturer's genuine sending channel and passed every technical authenticity check. The test that still holds costs you four minutes.

24 days ago

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Trezor Hack Scare: That STM32 Entropy Email Is a Phishing Attack

Trezor users received a fake STM32 entropy warning sent from a real Trezor address. Here is what happened and what to do if you clicked.

24 days ago

Aufgeschlagenes leeres Hauptbuch auf dunklem Holz, herausgetrennte Seiten schweben in der Luft, daneben eine Metallmünze

Cronos Rollback: Is Your Transaction Gone? How to Check Your Balance

Cronos discarded 10,961 blocks, almost two hours of chain history, to claw back $111.2 million from the Tectonic attack. We show you exactly which time window is affected, how to check your own transaction and what a rollback cannot retrieve.

24 days ago

Zwei geprägte Münzen mit Bitcoin-Symbol auf dunklem Stahl, die linke unter klarem Glas gestochen scharf, die rechte unter mattiertem Glas nur als Schemen

End Blind Signing: What to Check on Your Hardware Wallet After the Trezor Update

Since September 7, Trezor has shown contract data in plain text on the device instead of a hexadecimal string alone. Our own count shows which share of Ethereum capital that reaches and where you keep signing blind.

24 days ago

Verriegelter stählerner Auswurfschacht mit massivem Messing-Bügelschloss, davor eine Münze mit eingeprägtem Bitcoin-Zeichen

Withdrawal Whitelist at the Crypto Exchange: How to Lock the Withdrawal Path Against Foreign Addresses

A withdrawal whitelist lets balances leave only to addresses approved in advance, and it works even when password and second factor are compromised. On September 8, 2026 we checked which of thirteen providers document the function publicly.

26 days ago

Offenes Stahl-Tresorfach einer Bank, innen leer bis auf eine einzelne Münze mit eingeprägtem Bitcoin-Zeichen

Compensation After an Exchange Hack: What Twelve Crypto Providers Really Promise German Customers

After $322 million in losses in a single September week, the question is who replaces stolen coins. On September 8, 2026 we retrieved the security and legal pages of twelve providers and evaluated what is promised there.

26 days ago

Abgebrochener Messingschlüssel in einem massiven Tresorschloss, davor eine Metallmünze mit Bitcoin-Symbol

Stolen Keys Beat Code Flaws: Why the Private Key Is the Way In for 2026 Crypto Hacks

Compromised private keys overtook smart contract code flaws as the most common attack route for the first time in 2026. What sits behind the shift, and how to check your own setup for its single point of failure.

27 days ago

Weggebrochene Steinbruecke ueber dunklem Abgrund, an der Bruchkante kippt eine grosse Bitcoin-Muenze in die Tiefe

Liquid Network: Around 4,000 Bitcoin Drained via a Peg-Out, and What L-BTC Holders Must Check Now

Around 4,000 Bitcoin drained out of the Liquid Network federation wallet on September 6, even though no key was stolen. The network is halted and redemption is blocked. Here is what you should check now as an L-BTC holder.

27 days ago

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Liquid Network Hack: $320 Million In Bitcoin Walked Out, And The Hacker Wants To Give It Back

Nearly 4,000 BTC left Liquid Network's federation wallet. The attacker says he is a white hat and is negotiating with Blockstream on-chain.

27 days ago

Amtlich wirkender Briefumschlag mit rotem Wachssiegel auf einem dunklen Schreibtisch, daneben ein Messing-Brieföffner und eine Münze mit eingeprägtem Bitcoin-Zeichen

Fake German Finance Ministry Letters: Why Nobody May Demand 19 Percent VAT on Your Crypto Purchase

Since September 1, 2026, Germany's Federal Ministry of Finance has been warning about forged letters that demand 19 percent VAT on cryptocurrency purchases while citing real transactions. That tax does not exist, and this is how to spot the forgery.

29 days ago