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SecurityThe Ronin hack was a bridge with too few keys, not Ethereum failing
Sky Mavis’s sidechain bridge did what a 5-of-9 scheme does when five keys are in the wrong hands. Ethereum mainnet kept producing blocks. The game’s on-ramp did not.EasyCryptoGuides · · 1 min read
SecurityWormhole was a bridge bug. Jump put the ETH back.
A signature-check failure on the Solana side of a cross-chain bridge printed IOUs that were not matched by ether on Ethereum. Users of the wrapped token got made whole by a company, not by maths.EasyCryptoGuides · · 1 min readSecurityPoly Network’s $610m hole was a bridge bug. The chains kept running.
A little-known interoperability protocol lost on the order of $610 million, then spent two weeks getting it returned. Ethereum did not halt. A keeper path did.EasyCryptoGuides · · 1 min read
SecurityLedger’s shop dump was a mailing list, not the device
A million emails, plus a large slice of postal details. Hardware wallets stayed intact. Phishing and, later, worse mail, used the list. Cold storage does not encrypt the invoice.EasyCryptoGuides · · 1 min readSecurityKuCoin’s theft was hot-wallet keys, not a broken chain
Initial headlines said $150 million; later tallies sat near $275–285 million across BTC, ETH and a pile of ERC-20s. An exchange login is still a company wallet.EasyCryptoGuides · · 1 min readSecurityBinance’s 7,000 BTC theft is why SAFU existed
Phishing and malware against users, then one withdrawal that passed existing checks. Roughly $41 million at the day’s print. Bitcoin confirmed a signature. It did not fail.EasyCryptoGuides · · 1 min readSecurityCoincheck’s NEM theft was an exchange wallet, not a broken ledger
Then the largest exchange theft by dollar print. A Tokyo shop that was still only “deemed” registered kept customer NEM online. Custody vs the chain is the whole story.EasyCryptoGuides · · 1 min readLatest Security news
SecurityLedger devices from one reseller had an extra part. The chip was not the hole.
Buyers from a Southeast Asian reseller were told not to set unused devices up. Researcher estimates of the loss run from the tens of millions into the mid-nineties. Ledger has not confirmed a total. The Secure Element was not the clipboard.EasyCryptoGuides · · 4 min read
SecurityBitget lost about $387.5 million from hot wallets. That is an exchange ledger.
On 24 September 2026 Bitget halted withdrawals after unauthorised transfers from hot and warm wallets. The first figure was $351.6 million. A later count, including Zcash and TRON, put it at about $387.5 million. Customer keys were not the story Bitget told.EasyCryptoGuides · · 3 min readSecurity