Crypto Hacks and Security, Page 2

Hoher Stapel schwerer Metallmünzen ruht auf einer dünnen Glasmünze, die unter der Last Risse bekommt

$3.5 Million Against $550,000 of Collateral: How to Check Which Tokens Your DeFi Lending Market Accepts

One manipulated price was enough to borrow 3.5 million US dollars from the Nostra Finance money market on Starknet — backed by a token worth half a million dollars. Four figures from the documentation show you whether your own lending market has the same gap.

9 days ago

Verschlossenes Panzertor mit mehreren Riegeln, daneben eine offen stehende kleine Wartungsklappe, davor eine schwere Metallmünze

Check Your Safe Wallet Modules: How One Module Moved $7.7 Million Without a Signature

On September 15, 2,882 rsETH drained out of a Safe multisig without a single owner signing. An enabled module was to blame, and this is how you check your own wallet in five minutes.

11 days ago

Geschützte Krypto-Wallet wird von KI-gestütztem Phishing, Fake-Support und Deepfake-Symbolen bedroht.

AI Crypto Crime: How Scams Are Getting More Convincing

AI is sharpening fake support, deepfakes and phishing across the crypto space. Why the data still needs a careful reading and which security routines protect a wallet.

12 days ago

defi hack

Waltio Confirms Brevo Breach Touched Its User Emails: Here Is What To Do Now

Waltio has told users its Brevo account was accessed during the September breach that also hit Trezor and BitBox. Here is what was exposed.

12 days ago

Glaeserne Sanduhr mit rinnendem Sand neben einer Bitcoin-Muenze vor einem Serverschrank

Bitcoin Core 32.0 Arrives October 10: How to Check Whether Your Node Falls Out of Maintenance

The first release candidate for Bitcoin Core 32.0 has been out since September 14, with the release planned for October 10. With it, the 29 series loses its security updates - and our own count shows that affects 60 percent of reachable nodes.

12 days ago

Kleiner Einplatinen-Server mit Kühlkörper und glühenden Kontrollleuchten auf einer Metallwerkbank, daneben eine goldene Münze mit Bitcoin-Symbol

Updated Core Lightning via Docker? How to Check the Security Fix Is Really There

Your node reports v26.06.7 at startup and the security fixes can still be missing: four Docker tags served images with the right number and the wrong content in late August. Here is how to check your Lightning node's digest and catch up cleanly.

12 days ago

Ein aufgeschlagener Reisepass und eine leere Ausweiskarte liegen unter dem Lichtbalken eines Dokumentenscanners, daneben eine Metallmuenze mit Bitcoin-Zeichen

Revolut Data Breach: Your Files Are Public, and Here Is What You Can Do

Since September 14, the ID copies, KYC selfies and account statements stolen from Revolut have been published. What a password change no longer achieves, which rights the GDPR gives you, and why your Bitcoin history is the most sensitive part of the package.

13 days ago

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Bitcoin Lost to a Scam: What Counts as a Tax Loss in Austria

Lost bitcoin to a scam? Why Austria generally does not recognise the damage as a tax loss for privately held assets, and when compensation payments start to matter.

13 days ago

Ein Bolzenschneider durchtrennt einen massiven Messingschluessel auf einer Werkbank, daneben eine Metallmuenze mit rautenfoermigem Symbol

Revoke Token Approvals on Ethereum: A Revocation Now Costs 0.52 Cents

Every decentralized exchange, every lending pool and every bridge asks for a token approval, and it keeps running after the swap is done. We counted 5,910 approvals and worked out what a revocation really costs today.

13 days ago

Rotes Wachssiegel mit geometrischem Prägemuster auf einem gefalteten Dokument, daneben eine aufrecht stehende Metallmünze mit Bitcoin-Prägung, im Hintergrund eine Balkenwaage

Reporting Duty for Wallet Makers: What Has Applied Since September 11, 2026

Since September 11, 2026, anyone offering a wallet commercially in the EU must report an actively exploited vulnerability within 24 hours and inform the affected users. What Article 14 of the EU Cyber Resilience Act requires, where the limit of interpretation lies, and what you should take from it for your own custody.

14 days ago