According to the Wall Street Journal, the security platform for Samsung's Galaxy S4 smartphone suffers from a vulnerability that could allow malware programs to track emails and record data communications. Researchers at Israel's Ben-Gurion University of the Negev say that earlier this month they discovered the flaw, which affects phones with the new Knox platform for government and corporate clients. Researcher Mordechai Guri told the Wall Street Journal that the vulnerability could allow a hacker to easily intercept secure data communications on Samsung Galaxy S4 smartphones with the Knox platform enabled. This prompted a statement from Samsung, which noted that they were looking into the claims, but maintained that "the core Knox architecture cannot be compromised or infiltrated by such malware". The Knox platform isn't preloaded on the Galaxy S4, and despite being preloaded on devices such as the Galaxy Note 3, the researchers have said that the problem only affects the S4 smartphone.