Using centralized cryptocurrencies comes with a number of concerns. One possibility is that the currency will be shut down or limited in usage by the central authority. Another option is that the central administration will be hacked, resulting in the theft of user monies. It may also be more challenging to use centralized cryptocurrencies for smaller transactions due to more significant costs than regular cryptocurrencies. Central authorities might also be more likely to restrict transactions or freeze user funds. In some limited situations, however, centralized cryptocurrencies may provide greater security and stability than regular cryptocurrencies.