Complex sentence: The Canadian federal government temporarily shut online services of the Canada Revenue Agency (CRA) and several government departments over Heartbleed bug security concerns and the federal Canadian Cyber Incident Response Centre issued a security bulletin advising system administrators about the bug.
Split into simpler sentences: The Canadian federal government temporarily shut online services of the Canada Revenue Agency (CRA) and several government departments over Heartbleed bug security concerns. The federal Canadian Cyber Incident Response Centre issued a security bulletin advising system administrators about the bug.