DOS

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Related to Denial of Service: DDOS

DOS (Disk Operating System)

a COMPUTER program which enables a computer to record and retrieve data from a rotating magnetic or vinyl disk. The most widely-used disk operating system is MSDOS, which is used on computers that are compatible with the IBM personal computer.
References in periodicals archive ?
It made the site inaccessible for days in April 1999 after hackers overwhelmed its Internet computers also using a denial of service attack.
Jeffs said most denial of service attacks are carried out by one of two types of attackers.
This is called a Distributed Denial of Service Attack.
DefensePro protects large enterprises against worms, viruses, Denial of Service attacks and Trojans at 3-Gigabit speeds for first strike application security.
MailWatch also filters offensive e-mail material, blocks unwanted spam and "junk e-mail," controls oversized attachments and protects against denial of service attacks that can interrupt productivity.
Networker provides coverage for certain types of computer fraud, denial of service, telecommunications theft, ransom for computer-related threats, post-loss mitigation expenses and public-relations activity.
An 18-year-old student in the United Kingdom has been (https://www.west-midlands.police.uk/latest-news/news.aspx?id=5807) charged with supplying malicious software used to carry out a number of Denial of Service attacks against massive online companies.
The contracts are to create technology to defend against large and sophisticated Distributed Denial of Service (DDoS) attacks.
M2 EQUITYBITES-September 26, 2012--Alcatel-Lucent and Arbor Networks take aim at denial of service attacks(C)2012 M2 COMMUNICATIONS http://www.m2.com
TELECOMWORLDWIRE-September 26, 2012--Alcatel-Lucent and Arbor Networks take aim at denial of service attacks(C)1994-2012 M2 COMMUNICATIONS http://www.m2.com
The alleged 'denial of service attack' was in protest against 'harsh surveillance proposals' made by the UK Government, which would potentially allow the security services to monitor every email, phone call and website, to see who people were contacting and what websites they viewed.
Top Layer Networks said that DoS (Denial of Service) and DDoS (Distributed Denial of Service) attacks are becoming more frequent and less predictable, with unscrupulous hackers and organised crime syndicates breaking out of the online gambling market and targeting different sectors.