Shares of Redwood City security software company Imperva spiked by more than 20 percent on a report that it might be acquired.
Bloomberg cited unnamed sources who said that Imperva (NYSE: IMPV) had attracted a number of potential buyers, including Cisco Systems, IBM, Forcepoint (jointly owned by Vista Equity Partners and Raytheon), Fortinet and Akamai Technologies.
A report over the summer said that the company had hired Qatalyst Partners to look into possible options after receiving takeover interest.
Imperva...