Using the OSI network layer model as a basis, here’s how to derive a simplified three-layer model for SIP-based VoIP and corresponding threats and defenses. The resurgence of interest in VoIP to provide telephone services worldwide is often credited to the use of session initiation protocol (SIP) for signaling. Both residential and enterprise VoIP services are widely deployed. IP telephony may be used either to replace the primary telephone service or to provide additional telephone […]
DDoS
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Offloading your software and data to a cloud computing service has never been easier. Apple last week became the latest tech company – after Google and Amazon – to offer cheap online storage, with its new iCloud service allowing users to access music, documents and other files from any Apple device. But cloud services could also be used to launch attacks, send spam and commit fraud. “Right now it’s just a few attacks, most aren’t […]
Cloud computing is a priority for enterprises seeking greater agility, operational efficiency and overall cost reduction, but security concerns continue to inhibit its use. Half of all companies not adopting cloud computing cite security as the reason, according to a Forrester Research October 2010 study, “Security and the Cloud.” Whether considering a private cloud or public cloud, IT professionals face new security and compliance challenges. As data moves to the cloud, it can migrate internally […]
A lack of understanding about security risks is one of the key factors holding back cloud computing. Report after report after report harps on security as the main speed bump slowing the pace of cloud adoption. But what tends to be overlooked, even by cloud advocates, is that overall security threats are changing as organizations move from physical environments to virtual ones and on to cloud-based ones. Viruses, malware and phishing are still concerns, but […]