The Egyptian Navy says it caught three men trying to cut a big Internet cable that runs under the Mediterranean. A military spokesman says the cable belonged to Telecom Egypt, the major phone and Internet company in the country. No motive was suggested. Experts say there have been Internet slowdowns recently in Egypt, and as far away as Pakistan.

Chester Wisniewski, at the computer security firm Sophos, joins Marketplace Tech host David Brancaccio to discuss the incident.