The rules of the protocol and the cryptography used for Okcash are still working years after its inception, which is a good indication that the concept is well designed. However, security flaws have been found and fixed over time in various software implementations. Like any other form of software, the security of Okcash software depends on the speed with which problems are found and fixed. The more such issues are discovered, the more Okcash is gaining maturity.

There are often misconceptions about thefts and security breaches that happened on diverse exchanges and businesses. Although these events are unfortunate, none of them involve Okcash itself being hacked, nor imply inherent flaws in Okcash; just like a bank robbery doesn't mean that the dollar is compromised. However, it is accurate to say that a complete set of good practices and intuitive security solutions is needed to give users better protection of their money, and to reduce the general risk of theft and loss. Over the course of the last few years, such security features have quickly developed, such as wallet encryption, offline wallets, multi-signature transactions and hardware wallets.