Most of the 'holes' mentioned have to do with contract developers writing buggy code rather than bugs with Ethereum / Solidity itself. That being said, there's

Most of the 'holes' mentioned have to do with contract developers writing buggy code rather than bugs with Ethereum / Solidity itself. That being said, there's likely holes that aren't discovered yet, but the title and article is a bit misleading in that it points to flaws with Ethereum itself.