RuDEX is a cryptocurrency exchange based in Russia that was founded in 2017. To be honest, I've worked with a number of exchanges and written articles about them, but I've never come across a crypto exchange headquartered in Russia. Despite the fact that RuDEX is a global exchange, the majority of its users are Russian, thus I don't consider it a global exchange.
Furthermore, the exchange has a relatively small user base. The major cause for this, I believe, is the exchange's security issues. In reality, RuDEX's website has little information on security, but based on my study, the security mechanisms utilized in this exchange are decades behind the times. In other words, a cyber attack on this transaction might occur at any time.
I'm hoping that the developers will beef up the exchange's security before more assaults occur. Because this is the only method to expand the exchange's client base. Otherwise, the exchange may be forced to close down in the not-too-distant future. Because the exchange is a little difficult to use, certain modifications to the way it is used are required.