OTTAWA (Reuters) -Canada on Monday banned Chinese messaging application WeChat and Russian antivirus program Kaspersky on government-issued mobile devices due to privacy and security risks, but said government information had not been compromised. The ban was announced after an assessment by Canada's chief information officer that Tencent-owned WeChat and applications made by Moscow-based Kaspersky "present an unacceptable level of risk to privacy and security," the Treasury Board of Canada, which oversees public administration, said in a statement.