Exchange - related events also influence cryptocurrency prices. If a major cryptocurrency exchange experiences a security breach, resulting in the loss of millions of dollars' worth of coins, the price of the affected coins on that exchange can drop by 20 - 30% immediately. Moreover, the overall market sentiment can be negatively affected, causing a 5 - 10% decline in the prices of major cryptocurrencies. On the other hand, when an exchange launches new features like margin trading or a more user - friendly interface, it can attract 10 - 20% more users, potentially driving up the prices of listed coins by 5 - 15% as trading volume increases.