PageFair says small percentage of users were at risk from attack

PageFair, an Irish ad analytics company, said Monday a small percentage of users were at risk after attackers compromised its systems over the weekend.

CEO Sean Blanchfield wrote that 501 publishers that use the company’s javascript tag were affected.

Ninety percent of publishers have less than ten million page views per month, and 60 percent have less than one million page views per month, he wrote.

PageFair has calculated that about 2.3 percent of the visitors to those sites would have been at risk of being infected.

The attackers gained access to a key email account at PageFair and then reset the password for a PageFair account at a content distribution network (CDN).

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