Yuliya Andreyevna Yefimova, also romanized Efimova as seen in the video above, "...is a Russian swimmer from Taganrog. Efimova competed for Russia at the 2008 Beijing Olympics and the 2012 London Olympics. In London she won the bronze medal in the 200 metres Breaststroke...." [Link]
From the Russian News Agency TASS:
"...GENEVA, November 5. /TASS/. The International Swimming Federation (FINA) has cancelled all results of the Russian national swimming team from October 31, 2013 following the disqualification of Russian athlete Yulia Yefimova, the FINA press service said on Wednesday. ..."