'Vulnerability' led to Canadians' data being accessed in series of cyberattacks

A series of cyberattacks levelled against the Government of Canada exploited an internal “vulnerability” and leveraged previously hacked login information, leading to the breach of thousands of Canadians’ online Canada Revenue Agency accounts, federal officials say. Over the weekend the Canada Revenue Agency temporarily shut down its online services and applications after hackers used thousands of stolen usernames and passwords to fraudulently access government services in thre