Cumiskey spent last season playing in Sweden, where he compiled 28 points (four goals, 24 assists) in 45 games. The Canadian blueliner has played in 132 NHL games since being drafted by the Colorado Avalanche 222nd overall in the 2005 entry draft.
The Western Hockey League alum also has played in six Stanley Cup playoff games, recording a goal and an assist for the Avalanche. Cumiskey has spent the bulk of his professional career in the United States playing in the American Hockey League, where he had 81 points (19 goals and 62 assists) in 153 games with Albany and Lake Erie.
This is the Hawks' second signing this week. On Tuesday, they signed center Brad Richards to a one-year, $2 milllion deal.