Cryptocurrency security covers theft, fraud, ransomware payments, wallet compromise, and blockchain risks involving digital assets and transactions.
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Background for this topic.
Cryptocurrency is a digital asset secured by cryptography and recorded on a decentralized blockchain ledger. It enables peer-to-peer transactions without intermediaries, relying on consensus mechanisms like proof-of-work or proof-of-stake to validate and add transaction blocks. Users control funds through private keys, which are critical for accessing and transferring cryptocurrency.
From an information security perspective, protecting private keys is paramount, as their compromise leads to irreversible theft. Cryptocurrency exchanges and wallet software are frequent targets for hacking, requiring robust security controls and vulnerability management. Additionally, the pseudonymous nature of transactions can facilitate illicit activities, challenging efforts to trace funds and enforce compliance. Defenses include hardware wallets, multi-factor authentication, and secure key management practices to mitigate risks inherent in cryptocurrency operations.
OpenSea warns users that they are likely to be targeted in phishing attacks after a vendor employee accessed and downloaded its email list.
Elliptic points to several indicators that suggest the North Korea-linked gang was behind the hack Investigators at a blockchain analysis outfit have linked the theft of $100 million in crypto assets last week to the notorious North Korean-based cybercrime group Lazarus. The company said it had tracked the movement of some of the stolen cryptocurrency to a so-called mixer used to launder such ill-gotten funds.…
The malware also reportedly features self-propagating capabilities
Fake celeb endorsements are luring social media users
A cloud threat actor group tracked as 8220 has updated its malware toolset to breach Linux servers with the goal of installing crypto miners as part of a long-running campaign
Worse, imagine someone finding out you bought one of its NFTs The choppy waters continue at OpenSea, whose security boss this week disclosed the NFT marketplace suffered an insider attack that could lead to hundreds of thousands of people fending off phishing attempts.…
Elliptic used Tornado demixing techniques to trace the stolen funds to new Ethereum wallets
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OpenSea, the largest non-fungible token (NFT) marketplace, disclosed a data breach on Wednesday and warned users of phishing attacks that could target them in the coming days. [...]
The notorious North Korea-backed hacking collective Lazarus Group is suspected to be behind the recent $100 million altcoin theft from Harmony Horizon Bridge, citing similarities to the Ronin bridge attack in March 2022
What danger lies around the corner?
Rogue insider generated keys, resold them to blow the cash on gold, crypto, and more, prosecutors say Three people accused of selling pirate software licenses worth more than $88 million have been charged with fraud.…
Creating temporary keys that are not stored in central repositories and time out automatically could improve security for even small businesses.
The crooks needed at least two private keys, each stored in two parts... but they got them anyway.
Harmony reassured customers the rest of funds held on its blockchain were safe
The LockBit ransomware operation has released 'LockBit 3.0,' introducing the first ransomware bug bounty program and leaking new extortion tactics and Zcash cryptocurrency payment options. [...]
But welcomes fast cross-border payments in central bank digital currencies In the same week that it welcomed the launch of a local center of excellence focused on crypto-inspired central bank digital currencies, Singapore's Monetary Authority (MAS) has warned crypto cowboys they face a rough ride in the island nation.…