A flaw has been found in Citrix's Presentation Server Client, an application that allows remote users to access corporate servers from outside the office.
A flaw in a key Internet security protocol used by major networking products could open systems up to denial-of-service and other kinds of attacks, experts have warned.
Microsoft has refused to comment over allegations that computers running its Windows operating system are affected by a serious vulnerability in one of the Internet's underlying technologies.
A flaw in the most popular communications protocol for sending data on the Net could let attackers shut down connections between servers and routers, according to an advisory released Tuesday by Britain's national emergency response team.
Cisco has released a fix to a flaw in a popular communications protocol that some experts said could take down the Net and has announced a new, unrelated security bug.
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