(Reuters) - The Federal Bureau of Investigation has warned U.S. businesses to be on the alert for a sophisticated Iranian hacking operation whose targets include defense contractors, energy firms and educational institutions, according to a confidential agency document. The operation is the same as one flagged last week by cyber security firm Cylance ...

For at least two years, Iranian hackers have penetrated the computer networks of government agencies and major energy, transportation and infrastructure companies in the United States and 15 other countries, a security-services firm reports. The intruders have stolen "highly sensitive materials" from at least 50 firms worldwide, including 10 U.S. ...