Vice president of product management Gyanda Sachdeva said in a blog post that the two issues potentially impacted more than 418,000 customers over a period of just over two years, adding that more than 90% of those customers saw impacts of less than $25.

The professional network is working with all of those customers to fully credit their accounts.

Sachdeva outlined steps LinkedIn is taking to prevent a similar incident, including an audit of its metrics by the Media Rating Council, collaborating with Moat by Oracle Data Cloud to measure video viewability and investing in improvements to our processes and systems.

She wrote, “We are committed to delivering consistent advertising products and analytics that you can rely on and that align with industry and third-party standards. We’ll plan to share updates on the ongoing work that we’re doing to keep our advertising platform safe and trusted.”