Facebook and digital security firm RiskIQ announced a deal this week that will see the private company monitor millions of Facebook advertisers for malicious behavior. The strategic partnership isn’t a surprising one; eight of the ten largest financial institutions in the country already use the service, as do five of the seven leading Internet companies.

“We are extremely proud that Facebook chose RiskIQ to help protect their users from malicious and fraudulent activity,” said Elias Manousos, the CEO of RiskIQ. “Our platform’s global visibility into the user experience on Facebook allows us to provide them with the intelligence they need to keep users safe every day.”

RiskIQ seeks to monitor and index a company’s “digital footprint” for external threats. The service also simulates Internet users to “covertly and successfully” draw out malicious ads. For Facebook, RiskIQ will mostly examine third-party ads.

“RiskIQ helps Facebook detect and block threats planted in third-party ads that violate our policies and can put people at risk,” said Jennifer Henley, director of security operations at Facebook.

Along with its announcement last week that it’s finally shutting down its Friend data API, Facebook seems to be on a serious offensive this spring to prove it wants to protect users.