August 8, 2013 | Ian Foster

Researchers who move data over the Internet with tools such as FTP on the TCP communication protocol to detect and retransmit data packets that have become corrupted in transit. It turns out that in doing so, they are leaning on an extremely weak reed. A 16-bit checksum means that 1 in 65,536 bad packets will be erroneously accepted as correct. You might think that corrupted packets are rare.

June 12, 2011 | Lisa Childers

Part of my work for Globus Online User Services involves moving a great deal of data. Indeed, within the past 7 months I have singlehandedly moved over a petabyte of data using Globus Online. For any given transfer, verifying that the data at the destination matches the source is not always necessary (such as when executing a test run preparatory to a large transfer, or trying to better understand the user interactions enabled by a new GO feature.) In these cases the transferred data is a mere side effect.