Crypto Hacks and Security, Page 4

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.

17 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.

19 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.

19 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.

20 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.

20 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.

20 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.

22 days ago

Aufgeschlitzter Briefumschlag auf dunklem Holz, leere Papierbögen gleiten heraus, daneben eine physische Münze mit eingeprägtem Bitcoin-Zeichen

Pocket Bitcoin Data Breach: When Name, Home Address and Bitcoin Address Circulate Together

The Swiss Bitcoin service Pocket Bitcoin closed its investigation on September 3, 2026: 5,411 people affected, and for 291 of them the Bitcoin addresses they used along with copies of identity documents. Why this one data pairing has lasting effect, and what you should check with your own provider.

23 days ago

Geoeffneter Versandkarton auf einer dunklen Tuerschwelle, daneben leere weisse Versandetiketten und eine hochkant stehende Bitcoin-Muenze

Trezor Data Breach: Am I Affected and What Should I Do Now?

Trezor widened the ShipMonk data breach on September 4, 2026: around 67,000 further people affected, just over 80,000 in total, from orders placed between November 2019 and August 2021. How to check in two minutes whether you are among them, and what an exposed home address means for self-custody.

23 days ago

Stahl-Tresorwand mit zwei Fächern: das linke dauerhaft verschweißt, aus dem rechten offenen Fach rollt eine Münze mit rautenförmigem Symbol ins Licht

SAND Compensation After the Bridge Exploit: How to Get Your Frozen Tokens Back

The Sandbox intends to compensate every holder whose bridged SAND on Base and BNB Smart Chain was frozen, one for one in SAND on Ethereum. Anyone whose balance sits at an exchange need do nothing; anyone self-custodying does.

23 days ago