UPDATE 3-Canada aware of two cyber attacks, won't say if China involved
* Hackers broke into software firm, targeted energy company
* Canada deciding whether to approve big China takeover bid
* Canada legislator wants probe of bid to buy Nexen
* Canada spy agency concerned about industrial espionage
By David Ljunggren
OTTAWA, Sept 28 (Reuters) - Canada said on Friday it was aware of an attempt by hackers to target a domestic energy company, the second time in 24 hours Ottawa had acknowledged a cyber security attack against a Canadian firm.
In both cases the Canadian government declined to comment on reports which suggested a Chinese connection.
The news comes at an awkward time for Canada's Conservative government, which is deciding whether to approve a landmark $15.1 billion bid by China's CNOOC Ltd to take over Canadian oil producer Nexen Inc.
Some Conservative legislators are wary of the proposed CNOOC takeover, in part because of what they say are China's unfair business practices. Continued...