The Canada Revenue Agency is reporting that all of its online services are back in service after being down since Friday afternoon due to an "internet vulnerability" that was discovered during website maintenance.
The government agency made a decision to pull the sites back down at 2 p.m. on Friday after determining digital services were potentially at risk.
"At this time, we are not aware that any personal information has been affected", said the notice on Sunday.
The services include ones such as "My Account", "My Business Account", "Netfile", "EFILE" and "Auto-Fill My Return".More news: State men get NCAA tournament berth
The CRA's servers are on Shared Services Canada IP addresses, and according to Netcraft were running Apache 2.2.31 on *nix when last scanned on March 7, behind an F5 Big-IP for protection.
Canada's taxman has restored online services it took down over the weekend to respond to unspecified vulnerabilities.
You can still complete your tax forms, but will have to wait before filing online. If you question whether or not the CRA has received your return, you and the CRA have certainty on the filing of returns through a confirmation code that is issued only upon successful transmission. "We are now confident that the solution has been rigorously and successfully tested and services returned online".
Tax returns that had already been filed were processed normally while the services were down and Canadians should not "expect a delay in getting their refund", CRA said.