denial of service

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Gumming up the internet: When DNS servers attack..

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Operation Blackout's plan to shut down the internet this weekend may have come to nothing, but there is a way in which DNS servers can be used as part of a malicious attack.

Professor Alan Woodward explains more.

CIA website brought down - were Anonymous attackers responsible?

CIA website brought down - were Anonymous attackers responsible?

The CIA's website was brought down for some hours last night by what appears to have been an internet distributed denial-of-service (DDoS) attack.

Viruses and hacking, as seen on TV and in the movies

Viruses and hacking, as seen on TV and in the movies

Working in the computer security industry, we're pretty used to seeing malware and hacking misrepresented on our TV and movie screens.

Here are some of our favourite examples.

Click on an Anonymous link, and you could be DDoS'ing the US government

FBI: Anonymous has been exploiting Adobe flaws in yearlong, ongoing assault on US gov't sites

Anonymous seems to want revenge after the arrest of Megaupload's founders on piracy charges.

Take care what links you click on, you could be launching a denial-of-service attack against the US government and entertainment industry.

Large percentage of websites vulnerable to HashDoS denial of service attack

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Researchers in Germany have disclosed a vulnerability in most web programming languages that allows for a denial of service attack to be successful with very little resource and against the vast majority of websites

KISS's Gene Simmons website DDoS attack: Suspected Anonymous hacker charged

Suspected hacker held over attack on Kiss frontman's website

When the website of rock star Gene Simmons fell victim to a denial-of-service attack, the legendary KISS front man vowed revenge.

Now the FBI has arrested a 24-year-old man in connection with the attack.

Election-day cyber attack scandal rocks South Korea's ruling party

Election-day cyber attack scandal rocks South Korea's ruling party

Did governing politicians in South Korea approve an election-day cyber attack?

Three of South Korea's top seven leaders quit their posts over DDoS scandal.

Russian election 'cyber attack' brings down websites

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LiveJournal and other websites brought down as Russia turns out to vote. Could the elections have resulted in internet attacks on websites claiming that the vote was being fixed?

UK police foiled attack on royal wedding website

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UK police were able to foil attempts at disrupting the international web presence of the royal wedding. The site remained online despite record interest in the ceremony.

Mac malware: Tsunami backdoor variants discovered

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New variants of the latest Mac malware - the Tsunami backdoor Trojan - have been discovered.

The sky is not falling, and Mac users should not panic. But it may still be prudent to ensure your computers are protected against this and other Mac threats.

Tsunami backdoor for Mac OS X discovered

Tsunami backdoor Trojan for Mac OS X discovered

The Tsunami Mac backdoor allows cybercriminals to gain access to your Mac computer and launch denial-of-service attacks against third-party websites.

London Olympic Games to simulate cyber-attacks

London Olympic Games to simulate cyber-attacks

The London 2012 Olympic Games will open in nine months time, and - away from the glories anticipated on the track and field - consideration is being made about how to defend the world's leading sporting event from cyber-attack.

Homeless hacker 'Commander X' pleads not guilty [VIDEO]

Homeless hacker "Commander X" pleads not guilty

The FBI believe that the homeless man they arrested on Thursday was "Commander X", a member of the People's Liberation Front (PLF) associated with Anonymous hacktivism.

See "Commander X" defending denial-of-service attacks in a TV news report.

Anonymous suspects bailed - banned from using online nicknames and IRC

Anonymous suspects bailed - banned from using online nicknames or IRC

Four men have appeared in court regarding various Anonymous and LulzSec internet attacks, and were granted bail on the condition that they did not use specific online nicknames or Internet Relay Chat.

LulzSec hacking suspect denied access.. to his girlfriend

17-year-old Brit charged in ongoing Anonymous investigation

A teenage boy from Chester has been charged by British police in connection with a series of internet attacks by the Anonymous hacktivist group.

Meanwhile, another hacking suspect is denied access.. to his girlfriend.

Apache exploit leaves up to 65% of all websites vulnerable

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A newly discovered vulnerability in the Apache web server could leave up to 65% of all websites vulnerable to low-powered denial-of-service attacks.

UK police charge man in connection with Anonymous DDoS attacks

UK police charge man in connection with Anonymous DDoS attacks

A 22-year-old student has been charged by British police in connection with denial-of-service attacks carried out by the Anonymous hacktivist group.

Which begs the question - Is being an internet hacktivist really worth the risk?

Ron Paul's website attacked during fundraising drive

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A fundraising drive by US presidential hopeful Ron Paul was disrupted this weekend by an internet attack against his website.

British police issue warning to internet hacktivists

British police issue warning to internet hacktivists

The Metropolitan Police have taken the unusual step of using Twitter to send a message to anyone considering supporting internet attacks against companies and governments.

The warning comes days after the arrest of an alleged hacker suspected of being the spokesperson of Anonymous and LulzSec.

Suspected Anonymous hacker 'had 750,000 passwords', court hears

Suspected Anonymous hacker 'had 750,000 passwords', court hears

Jake Davis, the man suspected of being the Anonymous spokesman "Topiary", has appeared in a London court.