In a move that stunned some security researchers, a top investigator at Russia's largest antivirus provider, Kaspersky Lab, has been arrested in an investigation into treason, a crime that upon conviction can carry severe sentences.

Ruslan Stoyanov (credit: Kaspersky Lab)
"The case against this employee does not involve Kaspersky Lab," company officials wrote in a statement issued following the report. "The employee, who is Head of the Computer Incidents Investigation Team, is under investigation for a period predating his employment at Kaspersky Lab. We do not possess details of the investigation. The work of Kaspersky Lab's Computer Incidents Investigation Team is unaffected by these developments."