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Privacy & security


The cryptocurrency ecosystem has continued to take some major hits lately, causing many investors and holders to rethink the way they trade their crypto assets. Several high profile cryptocurrency hacks have made the news in the past few years. In one of the most recent hacks, the Japanese cryptocurrency exchange, Coincheck lost more than $500 …

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On Friday, February 9, 2018, Italian cryptocurrency exchange BitGrail announced that “internal checks revealed unauthorized transactions which led to a 17 million Nano [XRB] shortfall, an amount forming part of the wallet managed by BitGrail.” The shortfall when reported was allegedly worth $170 million and has presumably rendered BitGrail insolvent, despite the fact that the …

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Following one of the largest hacks in the history of cryptocurrency, Japanese cryptocurrency exchange Coincheck has announced that it will comply with an order from Japan’s Financial Services Agency to improve its business operations. On Friday, January 26, 2018, Coincheck was hacked, resulting in the loss over over $530 million USD worth of NEM (XEM) …

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In December 2017, an interesting rumor surfaced: According to “sources familiar with the matter,” the messaging app Telegram, very popular among crypto-enthusiasts for its strong encryption and privacy features, would launch its own blockchain platform and cryptocurrency. On January 8, 2018, TechCrunch reported that several unnamed sources had confirmed the news and quoted a secret …

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Bulletproofs, presented in a paper titled “Bulletproofs: Short Proofs for Confidential Transactions and More,” describe a new zero-knowledge proof system. The proposal uses on-chain scaling for privacy and suggests a new, faster and more compact way to verify privacy-enhancing Confidential Transactions (CTs). Specifically, Bulletproofs can decrease the size of these verifications for these types of …

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South Korean exchange Youbit announced on its website today that it is closing down after a hack early Tuesday, December 19, 2017, that resulted in the loss of 17 percent of its assets. The exchange, previously known as Yapizon, did not indicate how many bitcoins or other cryptocurrencies were stolen or what the total fiat …

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Imperva Incapsula, a cloud-based service provider, has released a comprehensive report titled “Q3 2017 Global DDoS Threat Landscape.” The report shows that cryptocurrency operators and Bitcoin exchanges are favorite targets of distributed denial of service (DDoS) attacks. A DDoS attack is defined as a persistent DDoS event against the same target (e.g., IP address or …

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Bitcoin’s capacity is limited. Meanwhile, smart contracts can be resource intensive. So even though Bitcoin has always supported basic smart contract functionality, the two have never been a natural match. But a recent topic of research spearheaded by Blockstream mathematician Andrew Poelstra could help fix this. Recently presented as key part of his presentation at …

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