August 15, 2008 Boiko with teammates Aida Chanaeva, Victoria Nikichina and Evgenia Lamonova beat the United States team 28 to 11, winning the gold medals of 2008 Olympic Games. This was her fourth consecutive olympic appearance, now as the captain of the national team. Boiko is known among teammates as Mama Sveta - for her experience; she actually has two daughters.
On the domestic arena, Boiko defends the colours of CSKA and is in fact a major in Russian armed forces (as at August 16, 2008). After winning the 2008 event, Boiko announced her retirement.