The Next Wave of Cyberattacks Won’t Steal Data — They’ll Change It

The big attacks that have been disclosed so far in 2015 involved the theft of data, and a lot of it. Some 21 million personnel records were taken from the Office of Personnel Management, likely by China, while 4,000 records, some with “sensitive” information, were stolen from the Joint Chiefs civilian email system, a theft blamed on Russia.

But America’s top spies say the attacks that worry them don’t involve the theft of data, but the direct manipulation of it, changing perceptions of what is real and what is not.

Director of National Intelligence James Clapper spelled out his concerns in written testimony presented to the House Subcommittee on Intelligence today.