Prime Targets: Do Firewalls Go Far Enough?

Chris King, Palo Alto Networks

About a year ago, investment banking firm Greenhill & Co. found that “port blocking” firewalls on its system and the hypertext transfer protocol secure (https) standard were no longer sufficient for protecting its trading communications.

Applications had become the firm’s greatest vulnerability, especially webmail services like Gmail, says John Shaffer, director of global systems and technology at Greenhill. Https was insufficient to block users who were switching to secure sockets layer (SSL)

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