On December 25, 2013, the first major theft of Dogecoin occurred when millions of coins were stolen during a hack on the online cryptocurrency wallet platform Dogewallet. The hacker gained access to the platform's filesystem and modified its send/receive page to send any and all coins to a static address. This hacking incident spiked tweets about Dogecoin, making it the most mentioned altcoin on Twitter at the time, although it was in reference to a negative event. To help those who lost funds on Dogewallet after its breach, the Dogecoin community started an initiative named "SaveDogemas" to help donate coins to those who had them stolen. Approximately one month later, enough money was donated to cover all of the coins that were stolen. On January 2014, the trading volume of Dogecoin briefly surpassed that of Bitcoin and all other crypto-currencies combined, however, its market capitalization remained substantially behind that of Bitcoin. As of 25 January 2015[update], Dogecoin had a market capitalization of USD 13. 5 million. In April 2015, Jackson Palmer announced he is taking an "extended leave of absence" from the cryptocurrency community.