Canada's interim privacy commissioner says Google has been caught afoul of the law by displaying web ads linked to a person's health history.
An investigation led by Chantal Bernier, who has stepped in for outgoing privacy commissioner Jennifer Stoddart, backed up a man's complaints that he was seeing so-called behavioural advertisements based on his web browsing history.
After searching for information about devices to treat sleep apnea, he began to see ads for those devices as he browsed the web.
While behavioural advertising is not illegal, Canada's privacy law does not allow consumers to be targeted based on "sensitive personal information," including a person's health.
'Most Canadians consider health information to be extremely sensitive. It is inappropriate for this type of information to be used in online behavioural advertising.' - Interim Privacy Commissioner Chantal Bernier
Google has pledged to upgrade the system that reviews ads for compliance, increase the monitoring of ads, and provide more information to advertisers and staff about the rules.
"We've worked closely with the office of the privacy commissioner throughout this process and are pleased to be resolving this issue," said a Google Canada spokeswoman in a statement.
The company, which declined an interview request, said it will implement these steps by June.
"We are pleased Google is acting to address this problem," Bernier said in a statement.
"Most Canadians consider health information to be extremely sensitive. It is inappropriate for this type of information to be used in online behavioural advertising."