Describing it as an "internet vulnerability" that was discovered during website maintenance, the CRA went offline Friday and services were restored Sunday afternoon. Individuals, businesses and representatives were again able to file returns, make payments, and access other digital services available through the CRA's website, including all its secure portals.
The Canada Revenue Agency has restored service to online users after parts of its website were shut down Friday afternoon over the discovery of a security vulnerability.
The services include ones such as "My Account", "My Business Account", "Netfile", "EFILE" and "Auto-Fill My Return".
CRA said took the step after it became aware of an internet vulnerability affecting some computer servers used by websites worldwide on March 10.
Canadians looking to get a head start on filing their taxes by going online experienced a setback this weekend.
"We took this action as a precaution, not as the result of a successful hack or breach", the statement says.
A software flaw exposed the website to hackers and the Canadian websites have since been patched and resumed operations, officials said.
He says people can prepare their income tax and benefit returns, and electronically file when the services come back online.
"We are now confident that the solution has been rigorously and successfully tested and services returned online".