On Friday the Canada Revenue Agency disabled some web services after finding a potential security breach.
"The CRA first took the websites offline at around midnight ET on March 10 after discovering an internet vulnerability that affects some computer servers used by websites worldwide", Samson said.
Digital services will remain offline until officials are satisfied there is no longer a security risk, he says.
"We took this action as a precaution, not as the result of a successful hack or breach", CRA, Canada's federal tax agency, said in a statement.
By late Sunday, CRA reported it had fixed its system, tested for the vulnerability and had brought the services back online.
CRA said it wasn't aware of any actual "unauthorized access to taxpayer information".
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TORONTO, March 12 Canada Revenue Agency (CRA) said on Sunday that it has resumed all its online services after taking down some applications for almost two days due to a security threat.
Among the services that were not available on Saturday were Netfile, Efile, and the MyBenefits mobile application.
Walters couldn't immediately say how many Canadians have already submitted their financial information to the CRA site this year.
The deadline to return your taxes in Canada is April 30th.
Canadians looking to get a head start on filing their taxes by going online experienced a setback this weekend.