This essay takes a look at a selection of network anonymity systems including VPNs, Tor, Freenet and I2P. The different systems are explained and then compared and contrasted with each other. A number of issues are considered for each system including ease of use, popularity, strength of anonymity provided, and potential attacks on the system.

Apple Security Advisory 2017-01-23-7 – iTunes for Windows 12.5.5 is now available and addresses code execution vulnerabilities.

Ubuntu Security Notice 3178-1 – It was discovered that icoutils incorrectly handled memory when processing certain files. If a user or automated system were tricked into opening a specially crafted file, an attacker could cause icoutils to crash, resulting in a denial of service, or possibly execute arbitrary code.

Cisco Security Advisory – A vulnerability in the Cisco WebEx browser extensions provided by Cisco WebEx Meetings Server and Cisco WebEx Meetings Center could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. The vulnerability is due to the use of a crafted pattern by the affected software. An attacker could exploit this vulnerability by directing a user to a web page that contains the crafted pattern and starting a WebEx session. The WebEx session could allow the attacker to execute arbitrary code on the affected system, which could be used to conduct further attacks. Cisco has begun to release software updates that address this vulnerability. There are no workarounds that address this vulnerability.