Oscar
From The Stargate Omnipedia
Robert Kinsey's Australian Shephard. Oscar was also the password of Kinsey's personal computer, giving detailed information regarding his activities behind illegal N.I.D. operations for the previous year and a half. Activities traced included operations with the rogue N.I.D. arm under Colonel Maybourne, Stargate dealings with the Russians, and attempts to remove George Hammond from the S.G.C. by blackmail.
KEY EPISODE
Chain Reaction - Seeing Kinsey's fondness for his dog, Oscar, Colonel "Starsky" O'Neill deduces "Oscar" to be the password for the senator's computer.