I cannot speak on behalf of the Canada Revenue Agency to explain how those integrity measures are applied. What I can say is that there were strengthened integrity measures put in place for the Canada recovery benefit that have been applied to the lockdown benefit. These allow for it to meet that balance between ensuring that supports are available when workers need them and, at the same time, allowing for that rigorous verification of eligibility.
On December 7th, 2021. See this statement in context.