The world’s top personal computer maker, Hewlett-Packard Co, recently announced that it will be purchasing security software firm ArcSight Inc for $1.5 billion in cash on Monday for further diversifying its computer business. The offer of $43.50 a share is a 24 percent premium to ArcSight’s Friday close of $35.10 on Nasdaq. From Timesofindia.indiatimes.com: Shares [...]