Dutch Authorities Investigate DigiNotar After Hacker’s Attack

Dutch authorities began investigating DigiNotar BV after hackers attacked the Internet-safety company, targeting websites such as Facebook Inc. and the U.S. Central Intelligence Agency.

Opta, the Dutch data protection agency, has started an investigation into the reliability of DigiNotar’s safety certificates, Harriet Garvelink, a spokeswoman for the government agency, said by phone. Public prosecutors will separately start a probe, spokesman Ernst Koelman said. DigiNotar is a unit of Oakbrook Terrace, Illinois-based VASCO Data Security International Inc.