CoStar Group sits on one of the largest proprietary real estate datasets in the world - more than 5.9 million commercial and residential properties tracked across 14 countries. That data feeds a family of high-traffic marketplaces including Apartments.com, LoopNet, Homes.com, and AcreValue, plus Matterport's 3D digital twin platform. For the security team, the threat surface is sprawling: payment systems, listing fraud pipelines, scraping operations targeting structured property data, credential stuffing across consumer-facing portals, and API abuse at scale. The company has traded on the S&P 500 and NASDAQ 100 since its 1987 founding, which means public-company compliance obligations - SOX, SEC reporting, GDPR across international operations - are baked into the operating rhythm.
The engineering stack spans real estate data analytics, digital marketplace infrastructure, and high-volume data processing pipelines. Security work here isn't theoretical; it's defending production systems that handle financial transactions, personally identifiable information from renters and buyers, and competitive intelligence data worth significant market value. With over 6,500 employees globally, the team operates in an environment where data integrity directly impacts revenue and public trust. The 3D capture and spatial computing layer from Matterport adds an unusual attack surface around spatial data and IoT-adjacent hardware integrations.
CoStar Group's core business is providing information, analytics, and online marketplaces for the commercial and residential real estate industries. The company was founded in 1987 and operates globally across 14 countries.
