A vulnerability in the way Apple's core operating system handles unicode characters allows an attacker to send a specially crafted message that can automatically reboot any Apple product.
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Denial of service
A new security vulnerability named "Darwin Nuke," that is capable of allowing remote denial of service attacks, has been discovered in Apple's iOS and OS X operating systems.
The Meetup social networking site has been hit with a number of denial of service attacks for the last few days after it received a "request" of $300 from the alleged attackers to stop the attack
Popular Bitcoin exchange, Bitstamp, has announced that it has suspended withdrawals following a denial-of-service attack and will be cancelling transactions that took place over last two days as well.
A number of popular online gaming services have been hit with denial of service attacks this week, with the latest being Steam which is currently being affected as of this writing.
GitHub, a major sharing site for developers, has been targeted for a Denial of Service attack. At present there is no clear evidence on what individual or groups are responsible for the action.
Security researchers at Core Security have identified a flaw in a Broadcom chip that allows malicious users to perform a denial of service attack on iPhones, iPads, and even some Ford vehicles.
A person who claims to be a former member of the hacker group Anonymous has claimed he launched the denial of service attack on The Pirate Bay web site earlier this week.
The Pirate Bay website has posted word on its Facebook page that it considers denial of service attacks launched by groups like Anonymous to be just another form of censorship.
The hacker group Anonymous launched several denial of service attacks against some UK government websites over the weekend as a protest against a proposed Internet monitoring law.