What are blockchain vulnerabilities?

These vulnerabilities are implemented in software (web services, smart contracts, the underlying blockchain system, etc.) and can be any number of weaknesses such as logic bugs, reentrancy issues, integer overflows and so on. And there is no comprehensive public list of weaknesses.

Is blockchain secure?

With cryptographic security and the assurance that no one can modify data without the knowledge of other participants, blockchain definitely seems secure. Blockchain can give you a tamper-proof account of transactions. However, this does not mean that blockchain is not vulnerable to cyber-attacks and security fraud.

What happens if a blockchain is hacked?

Computing power is quite crucial for gaining majority control over the Hashrate of a blockchain through malicious entities. Therefore, compromised blockchains could result in the reversal of transactions alongside double-spending. In 2018, three renowned cryptocurrency platforms experienced issues from 51% attacks.

Why are blockchain attacks so hot right now?

Blockchain attacks are very hot right now for one simple reason: it’s where the money is. If you attack and compromise a database you need to take that data and then sell it to monetize your attack. If you compromise a web server you need to install some malware to harvest credit card details, and then monetize that data by selling it.