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denial of service

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Dictionary

denial of service

A condition in which a system can no longer respond to normal requests. See denial of service attack.

Dictionary

Definition: denial of service

A condition in which a system can no longer respond to normal requests. See denial of service attack.



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  • Don’t believe the hype - it's not a cyber-war

    Tthe media is a naive and unwitting hand puppet for groups like Anonymous,

    News items | February 8, 2012 11:40am PST

  • RIM warns of data leakage, denial-of-service vulnerability

    Research in Motion (RIM) has shipped a patch to cover a serious security vulnerability that could allow attackers to read files that contain only printable characters on the BlackBerry Enterprise...

    Blog posts | July 14, 2011 10:10am PDT

  • PayPal hit by DDoS attack after dropping Wikileaks

    PayPal was hit by a denial-of-service attack on Sunday that took its blog offline for about eight hours, according to security researchers.

    News items | December 6, 2010 4:38am PST

  • New DoS attack uses Web servers as zombies

    Researchers have uncovered a botnet that uses compromised Web servers instead of the usual personal computers to launch denial-of-service (DoS) attacks.

    News items | May 13, 2010 7:12am PDT

  • Should a targeted country strike back at the cyber attackers?

    Should a targeted country retaliate over cyber attacks using kinetic weapons, or offensive cyber warfare capabilities? Common sense says 'yes', the dynamics of cyber warfare say 'think twice'...

    Blog posts | May 10, 2010 2:03pm PDT

  • Image Gallery: April's cyber threat landscape

    Facebook phishing campaigns serving ZeuS crimeware, new Mac OS X malware variant, yet another cyber espionage network exposed, next to several reports detailing Opt-In botnets and how outdated...

  • Kernel vulnerabilities discovered in Ubuntu

    Kernel vulnerabilities have been uncovered across a range of Ubuntu releases, covering 6.06 LTS to 9.10, also including Kubuntu, Edubuntu, and Xubuntu distros.

    Blog posts | March 18, 2010 7:41am PDT

  • Patch Tuesday: Microsoft plugs critical Windows worm holes

    The company urged customers to prioritize and deploy four updates because of the "critical" severity rating and the fact that "consistent exploit code" is likely within the next 30 days.

    Blog posts | February 9, 2010 11:29am PST

  • Microsoft confirms 'detailed' Windows 7 exploit

    Exploit code for the vulnerability was released by researcher Laurent Gaffié after failed attempts to get Microsoft's security response center to acknowledge that this was an issue that needs to...

    Blog posts | November 16, 2009 10:25am PST

  • Researchers devise way to deny denial-of-service attacks

    Researchers say they have devised a way to filter out denial of service attacks on computer networks, including cloud computing systems, improving security on government, commercial, and...

    Blog posts | September 30, 2009 1:10pm PDT

  • Twitter, Facebook attack targeted one user

    A Georgian blogger with accounts on Twitter, Facebook, LiveJournal and Google's Blogger and YouTube was targeted in a denial of service attack that led to the site-wide outage at Twitter and...

    News items | August 7, 2009 4:49am PDT

  • News to know: Twitter DOS attack; Cisco and IBM, Clunkers, Win 7 chart; Murdoch; CTO

    Here are today's notable headlines. You can get News To Know via email alert and RSS daily. For continuous updates see BNET's around-the-Web tech coverage. Ryan Naraine: Twitter knocked offline...

    Blog posts | August 7, 2009 2:00am PDT

  • US, South Korea site attacks traced back to UK

    The denial-of-service attacks launched on websites in South Korea and the US earlier this month appear to have come from a master server in the UK.

    News items | July 15, 2009 3:53am PDT

  • Iranian opposition launches organized cyber attack against pro-Ahmadinejad sites

    Approximately 24 hours ago, the Iranian opposition coordinated an ongoing cyber attack that has successfully managed to disrupt access to major pro-Ahmadinejad Iranian web sites, including the...

    Blog posts | June 15, 2009 8:19am PDT

  • Patch Tuesday heads-up: 8 bulletins, 5 critical

    Microsoft plans to ship 8 security bulletins next Tuesday (April 14, 2009) to fix remote code execution and denial of service vulnerabilities affecting Windows, Office and Internet Explorer. ...

    Blog posts | April 9, 2009 11:06am PDT

  • DDoS attack on UltraDNS affects Amazon.com, SalesForce.com, Petco.com

    Several NeuStar UltraDNS managed DNS service customers, including Amazon.com, SalesForce.com, advertising.com and Petco.com, were knocked offline for several hours yesterday morning by a...

    Blog posts | April 1, 2009 9:42am PDT

  • Cisco IOS patch day covers multiple vulnerabilities

    Cisco has shipped a batch of patches to cover multiple vulnerabilities affecting IOS, the software that powers the vast majority of Cisco's routers and switches. In all, the company released 8...

    Blog posts | March 25, 2009 5:18pm PDT

  • Verizon Business takes its denial of service defenses global

    In the latest example of how services are moving to the Internet backbone, Verizon Business said Tuesday that it will extend its denial of service (DOS) attack defense to overseas. Verizon...

    Blog posts | February 10, 2009 2:09am PST

  • Kyrgyzstan under cyberattack

    Central Asian country Kyrgyzstan is under cyberattack, similar to attacks launched by Russia against Estonia and Georgia.

    News items | January 29, 2009 8:50am PST

  • VoIP vulnerabilities in Microsoft Communicator

    Researchers at VoIPshield Labs have pinpointed a wide range of denial-of-service vulnerabilities in Microsoft Communicator, the unified communications that features business-grade instant...

    Blog posts | November 17, 2008 9:06am PST

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