Cybersecurity startup AttackIQ has closed a $5.5 million financing round led by Salesforce Ventures, CEO Stephan Chenette confirmed Aug. 13.

The company recently reported the deal in a filing with the U.S. Securities and Exchange Commission.

"This round will be used to expand our sales and marketing opportunities as well as build new capabilities in our FireDrill Continuous Security Validation platform," Chenette said in an emailed statement.

The platform tests software that AttackIQ clients have deployed to defend against hackers.

Previously the company closed an $8.8 million Series A funding led by Index Ventures, with participation from Qualcomm Ventures and Telstra Ventures. Chenette said those investors also participated in the more recent round.

Chenette and Rajesh Sharma, the company’s vice president of engineering, cofounded the company in 2013.

Reach reporter Sarah de Crescenzo at sarahd@sdbj.com.