This is a roundup of cryptocurrency developments. A tampered Ledger attack reportedly reached Europe after estimated losses of $93.4 million linked to devices from an Asian reseller. European user Johannes said Johannes bought a modified device from MediaMarkt, but no funds have been taken. Ledger has not confirmed that the European device belongs to the same attack. Veria Labs received a $250,000 bounty for discovering an XRP overflow bug that co-founder Cayden Liao said could create more than 18 trillion XRP in one transaction. RippleX patched the bugs, and there is no evidence of exploitation.