BlackBerry executives will be pleased to know that Samsung’s plan to challenge them in the enterprise space has been dealt a setback. The New York Times reports that Samsung has delayed releasing its KNOX security software for business customers until at least this summer because the company “needed more time to test the software internally and with carriers.” Samsung’s KNOX security suite, which it first unveiled at Mobile World Congress this year, has several key enterprise features including an application container that works similarly to BlackBerry’s Balance feature that separates work application data from personal application data; the ability to implement separate VPNs to individual applications rather than relying on one VPN for the entire device; and a security-enhanced version of Android that’s been customized to help IT departments enforce more than 300 IT policies and have access to more than 700 mobile device management APIs.