Search results “Cryptosysteme definition of irony”
What is SQL SLAMMER? What does SQL SLAMMER mean? SQL SLAMMER meaning, definition & explanation
What is SQL SLAMMER? What does SQL SLAMMER mean? SQL SLAMMER meaning - SQL SLAMMER definition - SQL SLAMMER explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ SQL Slammer is a 2003 computer worm that caused a denial of service on some Internet hosts and dramatically slowed down general Internet traffic. It spread rapidly, infecting most of its 75,000 victims within ten minutes. The program exploited a buffer overflow bug in Microsoft's SQL Server and Desktop Engine database products. Although the MS02-039 patch had been released six months earlier, many organizations had not yet applied it. The worm was based on proof of concept code demonstrated at the Black Hat Briefings by David Litchfield, who had initially discovered the buffer overflow vulnerability that the worm exploited. It is a small piece of code that does little other than generate random IP addresses and send itself out to those addresses. If a selected address happens to belong to a host that is running an unpatched copy of Microsoft SQL Server Resolution Service listening on UDP port 1434, the host immediately becomes infected and begins spraying the Internet with more copies of the worm program. Home PCs are generally not vulnerable to this worm unless they have MSDE installed. The worm is so small that it does not contain code to write itself to disk, so it only stays in memory, and it is easy to remove. For example, Symantec provides a free removal utility (see external link below), or it can even be removed by restarting SQL Server (although the machine would likely be reinfected immediately). The worm was made possible by a software security vulnerability in SQL Server first reported by Microsoft on July 24, 2002. A patch had been available from Microsoft for six months prior to the worm's launch, but many installations had not been patched – including many at Microsoft. The worm began to be noticed early on 25 January 2003 as it slowed down systems worldwide. The slowdown was caused by the collapse of numerous routers under the burden of extremely high bombardment traffic from infected servers. Normally, when traffic is too high for routers to handle, the routers are supposed to delay or temporarily stop network traffic. Instead, some routers crashed (became unusable), and the "neighbour" routers would notice that these routers had stopped and should not be contacted (aka "removed from the routing table"). Routers started sending notices to this effect to other routers they knew about. The flood of routing table update notices caused some additional routers to fail, compounding the problem. Eventually the crashed routers' maintainers restarted them, causing them to announce their status, leading to another wave of routing table updates. Soon a significant portion of Internet bandwidth was consumed by routers communicating with each other to update their routing tables, and ordinary data traffic slowed down or in some cases stopped altogether. Ironically, because the SQL Slammer worm was so small in size, sometimes it was able to get through when legitimate traffic was not. Two key aspects contributed to SQL Slammer's rapid propagation. The worm infected new hosts over the sessionless UDP protocol, and the entire worm (only 376 bytes) fits inside a single packet. As a result, each infected host could instead simply "fire and forget" packets as rapidly as possible (generally hundreds per second).
Views: 1323 The Audiopedia
SDC 2017 - !Oxymoron: Encrypted (Database) Search - Srinivasan Narayanamurthy
Download Presentation: https://www.snia.org/sites/default/files/SDC/2017/presentations/Stor_Sec_Identity_Mngmnt/Narayanamurthy_Srinivasan_Oxymoron_Encrypted_%28Database%29_Search.pdf Abstract: Encrypted database systems cryptographically separate the roles of providing, administering, and accessing data. They reduce risks of a data breach, since the server(s) hosting the database can no longer access its content. Since encrypted search was introduced in 2000, the area has grown rapidly; systems are offered by academia, start-ups and established companies. However, there is no best encrypted database or search technique. Design of these systems is a balancing act between security, functionality, performance, and usability. This challenge is more difficult with different paradigms of databases, namely SQL, NoSQL, and NewSQL. The database evolution will continue, and the encrypted search community should be able to quickly provide functionalities consistent with newly invented databases. This talk is aimed at providing the following: 1. an identification of primitive (base) operations across database paradigms, and corresponding encrypted search techniques that implement these operations. 2. an evaluation of the current state of encrypted search and database systems, comparing them with unencrypted systems, thus identifying key gaps in functionality. 3. an analysis of attacks against encrypted databases.
Views: 44 SNIAVideo
The importance of accessibility and its impact on students
Gallaudet University has a world-wide reputation as the premier university for the Deaf. This gives them a unique perspective on the importance of accessibility and how access (or the lack of it) affects student success. This interview with the Director of the Office of Distance Education and the CIO is delivered in both ASL and English. Speakers: Mary "Tammy" Weiner, PhD, Director of Distance Education, Gallaudet University Earl Parks, CIO, Gallaudet University Scott Ready, Principal Strategist, Blackboard
Views: 362 Blackboard Inc.
Theory and Practice of Cryptography
Google Tech Talks December, 19 2007 Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice and at Google, Proofs of Security and Security Definitions and A Special Topic in Cryptography This talk is one in a series hosted by Google University: Wednesdays, 11/28/07 - 12/19/07 from 1-2pm Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and Information Security group at MIT, where he was advised by Ron Rivest. He is a member of Google's Applied Security (AppSec) team and is the technical lead for Google's internal cryptographic library, KeyMaster.
Views: 70348 GoogleTechTalks
Vocabulary Episode 88  |Supersede,Blow,Obsolete,Deadline,Commercial|THE HINDU Editorial Words
Supersede - 0:35 ,Blow -1:32 ,Obsolete -2:25 ,Deadline - 3:19,Commercial - 4:19| Subscribe to our channel for continuous updates This video is useful for IBPS PO, SBI PO, UPSC CSAT, RBI and various other competitive exams. Today's words are taken from THE HINDU's Editorial. View Web version with Quiz here : Article: A clean-up act: no compromise over air quality Link:http://www.thehindu.com/opinion/editorial/a-clean-up-act-sc-signals-there-can-be-no-compromise-over-air-quality/article17745502.ece Words discussed are: 1.Supersede  2.Blow  3.Obsolete  4.Deadline  5.Commercial English Vocabulary : https://www.youtube.com/watch?v=M9cxGN9cAH4&list=PLxJNbXGrHdcWe4PMHJLQ7RZP8SRBrJOr4 In this videos we have presented the above selected english words for learning by example sentences. This will be useful for IELTS, TOEFL, IBPS, SSC CGL, SBI and most other competitive exams. English speaking is not a science it is only an art of learning words by improving your vocabulary with rich new words you can easily speak english with new set of words. All the words discussed are given with meaning of the words and synonym, antonym of the words. We take these words from The hindu editorial which is believed to be one of the best in terms of editorial words used in their articles. We must improve upon our English Vocabulary to enrich our knowledge in Spoken English as well as written English. Though British English and American English differences in accent, words from basic english to advanced english are mostly similar with some spelling variations. Attending to English classes online will be helpful to improve basic english listening, english reading. Our videos are Prepared by selecting editorial words from the hindu editorial. We frame a few example sentences after providing synonyms with basic general meaning for the word and antonyms that is opposite words to the word taken from the editorial. We also plan to introcude Idioms and Phrases in the future. ------------------------------------------------------------------------------ Visit our website for Free regular updates: https://www.exambin.com Follow us on: Facebook : https://www.facebook.com/exam.ibps Twitter. https://www.twitter.com/exambin Google+ : https://plus.google.com/+ExamBin -----------------------------------------------------------------------------
Views: 163 Exambin
Multi-factor authentication
Multi-factor authentication (MFA) is an approach to authentication which requires the presentation of two or more of the three independent authentication factors: a knowledge factor ("something only the user knows"), a possession factor ("something only the user has"), and an inherence factor ("something only the user is"). After presentation, each factor must be validated by the other party for authentication to occur. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 86 Audiopedia