A person looks at a Canada Revenue Agency homepage in Montreal, Sunday, Aug. 16, 2020, as the COVID-19 pandemic continues in Canada and around the world. THE CANADIAN PRESS/Graham Hughes

A person looks at a Canada Revenue Agency homepage in Montreal, Sunday, Aug. 16, 2020, as the COVID-19 pandemic continues in Canada and around the world. THE CANADIAN PRESS/Graham Hughes

Thousands of CRA and government accounts disabled after cyberattack

Federal authorities scrambling for answers

Federal authorities were scrambling for answers over the weekend after revealing that hackers used thousands of stolen usernames and passwords to fraudulently obtain government services — with the extent of the damage still unclear.

More than 9,000 hijacked accounts that Canadians use to apply for and access federal services have been cancelled after being compromised in what the Treasury Board of Canada described as “credential stuffing” attacks.

“These attacks, which used passwords and usernames collected from previous hacks of accounts worldwide, took advantage of the fact that many people reuse passwords and usernames across multiple accounts,” the federal department said in a statement.

The hacked accounts were tied to GCKey, which is used by around 30 federal departments and allows Canadians to access various services such as employment insurance, veterans’ benefits and immigration applications.

One-third of those accounts successfully accessed services before all of the affected accounts were shut down, said the Treasury Board, which is responsible for managing the federal civil service as well as the public purse.

READ MORE: Twitter racing to unravel mystery cyberattack

Officials are now trying to determine how many of those services were fraudulent.

The GCKey attack included thousands of Canada Revenue Agency accounts, through which Canadians can access their income-tax records and other personal information as well as apply for financial support related to the COVID-19 pandemic.

A total of 5,500 CRA accounts were targeted through the GCKey attack and an earlier “credential stuffing” scheme, the Treasury Board said.

“Access to all affected accounts has been disabled to maintain the safety and security of taxpayers’ information and the Agency is contacting all affected individuals and will work with them to restore access to their CRA MyAccount,” the Treasury Board said in a statement.

The department did not reveal how many of the CRA accounts were compromised or the cost of the suspected fraud, but said federal officials as well as the RCMP and federal privacy commissioner were conducting separate investigations.

It also did not say how Canadians in receipt of services such as the Canada Child Benefit or Canada Emergency Response Benefit for those affected by COVID-19 would be affected.

Revelations of the GCKey attack follow earlier concerns and reports from some Canadians that they were being targeted by hackers during the pandemic, with some reporting thousands of dollars in CERB payments for which they did not apply.

READ MORE: To get the latest news on Vancouver Island, B.C., Canada and the world delivered to your inbox daily, click here.

The government warned Canadians to use unique passwords for all online accounts and to monitor them for suspicious activity.

The Canadian Anti-Fraud Centre says more than 13,000 Canadians have been victims of fraud totalling $51 million this year. There have been 1,729 victims of COVID-19 fraud worth $5.55 million.

Lee Berthiaume, The Canadian Press

Like us on Facebook and follow us on Twitter 

CanadaCoronaviruscybersecurity

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

A health-care worker prepares a dose of the Pfizer-BioNTech COVID-19 vaccine at a UHN COVID-19 vaccine clinic January 7, 2021. THE CANADIAN PRESS/Nathan Denette
Employers might be able to require COVID-19 vaccination from employees: B.C. lawyer

‘An employer must make the case’ using expert science, explains lawyer David Mardiros

The COVID-19 outbreak at the two Coastal GasLink workforce lodges has officially been declared over. (Lakes District News file photo)
COVID-19 outbreak at Coastal GasLink worksites declared over

In total, 56 cases were associated with the outbreak in the Burns Lake and Nechako LHAs

Brett Alexander Jones is wanted on several warrants province-wide, in connection with multiple charges. Jan. 21, 2021. Kitimat RCMP photo
Kitimat RCMP searching for man wanted on several warrants province-wide

Jones is described as a five-foot 10-inches Caucasian man, with blond hair and blue eyes.

That’s Houston physician Dr. Stefanie Steel receiving her first dose of the Pfizer vaccine Jan. 19, 2021 from RN nurse manager Cindy Cockle. (Northern Health photo)
First Houston vaccinations take place

Long term care residents, health care workers on list

Terrance Josephson of the Princeton Posse, at left, and Tyson Conroy of the Summerland Steam clash during a Junior B hockey game at the Summerland Arena in the early spring of 2020. (John Arendt - Summerland Review)
QUIZ: How much do you know about hockey?

Test your knowledge of Canada’s national winter sport

A 75-year-old aircraft has been languishing in a parking lot on the campus of the University of the Fraser Valley, but will soon be moved to the B.C. Aviation Museum. (Paul Henderson/ Chilliwack Progress)
Vintage military aircraft moving from Chilliwack to new home at B.C. Aviation Museum

The challenging move to Vancouver Island will be documented by Discovery Channel film crews

A video posted to social media by Chilliwack resident Rob Iezzi shows a teenager getting kicked in the face after being approached by three suspects on Friday, Jan. 22, 2021. (YouTube/Rob i)
VIDEO: Security cameras capture ‘just one more assault’ near B.C. high school

Third high-school related assault captured by Chilliwack resident’s cameras since beginning of 2021

FILE - In this Feb. 14, 2017, file photo, Oklahoma State Rep. Justin Humphrey prepares to speak at the State Capitol in Oklahoma City. A mythical, ape-like creature that has captured the imagination of adventurers for decades has now become the target of Rep. Justin Humphrey. Humphrey, a Republican House member has introduced a bill that would create a Bigfoot hunting season, He says issuing a state hunting license and tag could help boost tourism. (Steve Gooch/The Oklahoman via AP, File)
Oklahoma lawmaker proposes ‘Bigfoot’ hunting season

A Republican House member has introduced a bill that would create a Bigfoot hunting season

Economic Development and Official Languages Minister Melanie Joly responds to a question in the House of Commons Monday November 23, 2020 in Ottawa. THE CANADIAN PRESS/Adrian Wyld
Federal minister touts need for new B.C. economic development agency

Last December’s federal economic update promised a stimulus package of about $100 billion this year

FILE - In this Nov. 20, 2017, file photo, Larry King attends the 45th International Emmy Awards at the New York Hilton, in New York. Former CNN talk show host King has been hospitalized with COVID-19 for more than a week, the news channel reported Saturday, Jan. 2, 2021. CNN reported the 87-year-old King contracted the coronavirus and was undergoing treatment at Cedars-Sinai Medical Center in Los Angeles. (Photo by Andy Kropa/Invision/AP, File)
Larry King, broadcasting giant for half-century, dies at 87

King conducted an estimated 50,000 on-air interviews

BC Coroners Service is currently investigating a death at Canoe Cove Marina and Boatyard in North Saanich. (Black Press Media File)
Drowning death in North Saanich likely B.C.’s first in for 2021

Investigation into suspected drowning Monday night continues

Kimberly Proctor, 18, was murdered in 2010. Her family has spent many of the years since pushing for a law in her honour, that they say would help to prevent similar tragedies. (Courtesy of Jo-Anne Landolt)
Proposed law honouring murdered B.C. teen at a standstill, lacks government support

Ministry of Mental Health and Addictions has concerns with involuntary detainment portion of act

Chief Public Health Officer Theresa Tam speaks during a daily briefing in Ottawa. (THE CANADIAN PRESS/Adrian Wyld)
31 cases of COVID-19 variants detected in Canada: Health officials

Dr. Theresa Tam made announces 13 more variant COVID-19 cases in Canada

Most Read