Correction.

• Position: Correction notice

The first Business Brief item in the January/February issue contained inaccurate information from PGP Corp. on its security costs. For an enterprise with 10,000 gateway email users and 3,000 internal email users (plus 2,000 each BlackBerry and laptop users), a perpetual license would cost $950,000 in the first year and $200,000 a year after that. An annual subscription license, on the other hand, would cost $350,000 a year, according to an example supplied by...