Cisco Systems is negotiating to acquire Web application firewall (WAF) provider Signal Sciences, but acquisition talks between the networking giant and cybersecurity startup may not lead to a deal, according to The Information.The deal, if consummated, potentially aligns well with two major priorities from Cisco CEO Chuck Robbins. Indeed, Signal Sciences would both boost Cisco's cybersecurity portfolio while also aligning with the company's shift to subscription services and recurring revenues.The potential deal may also help Cisco to compete more effectively against Palo Alto Networks and Fortinet, among others, The Information suggested. But again, the discussions have not yet triggered an official deal, and neither Cisco nor Signal Sciences have commented about the rumored M&A discussions.