A 15-year-old global insider threat protection company has raised $15 million in Series A funding led by Norwest Venture Partners and Wing Ventures. Having just moved its headquarters to the Silicon Valley from London, Dtex Systems is setting its sights on Fortune 500 companies amidst growing concerns over the dangers of insider threat. According to a recent study by Vormetric, 89% of companies believe they are at risk for insider threat, and 93% of companies are looking to expand spending on security.