Sunday, 20 September 2015

All Versions of Android

Cupcake:
  • Android 1.5
Donut:
  • Android 1.6
Eclair:
  • Android 2.0
  • Android 2.1
Froyo: 
  • Android 2.2
Gingerbread:
  • Android 2.3
Honeycomb:
  • Android 3.0
  • Android 3.1
  • Android 3.2
Ice Cream Sandwich:
  • Android 4.0
Jelly Bean:
  • Android 4.1
  • Android 4.2
  • Android 4.3
KitKat:
  • Android 4.4
Lollipop:
  • Android 5.0
  • Android 5.1
Marshmallow:
  • Android 6.0

Monday, 14 September 2015

" What happens on the web in 30 seconds ! "

" What happens on the web in 30 seconds ! "
.
-20,400 GB of global IP data transferred.
-70+ BotNet Infections.
-12 New victims of identity theft.
-3+ New Wikipedia Articles published.
-102 Million Emails sent.
-700 new Mobile Users.
-25.000 App downloads.
-$45,000 sales on Amazon.
-31,141 hours of music played on Pandora.
-55+ New linked in Accounts.
-Over 10 Millions photo.
-Views, 3500+ Photo uploads on Flickr.
-165 + New Twitter accounts, 50,000+ New
Tweets.
-150,000 Facebook Log ins.
3M+ Facebook Views ,
350,000 Status update,
40,000+ Wall posts,

Saturday, 12 September 2015

The Diffrence between DDoS and DoS Attack



The Diffrence between Ddos and Dos ------------------------------------- DoS A DoS Attack is a Denial of Service attack. This meens that one computer and one internet connection is used to flood a server with packets (TCP / UDP). The point of such a denial of service attack is to overload the targeted servers bandwidth and other resources. This will make the server inaccessible to others and blocking the website or whatever else is hosted there. DDoS A DDoS Attack is a Distributed Denial of Service Attack. In most respects it is similar to a DoS attack but the results are much different. Instead of one computer and one internet connection the DDoS attack utilises many computers and many connections. The computers behind such an attack are often distributed around the whole world and will be part of what is known as a botnet. The main difference between a DDoS attack vs a DoS attack, therefore, is that the target server will be overload by hundreds or even thousands of requests in the case of the former as opposed to just one attacker in the case of the latter. 

Sunday, 6 September 2015

If you want to be security professional even hacker you should know these terms , u may know or not i just share with you 


1.Adware - Adware is software designed to force pre-chosen ads to display on your system. Some adware is designed to be malicious and will pop up ads with such speed and frequency that they seem to be taking over everything, slowing down your system and tying up all of your system resources. When adware is coupled with spyware, it can be a frustrating ride, to say the beast. 

2.Back Door - A back door is a point of entry that circumvents normal security and can be used by a cracker to access a network or computer system. Usually back doors are created by system developers as shortcuts to speed access through security during the development stage and then are overlooked and never properly removed during final implementation. Sometimes crackers will create their own back door to a system by using a virus or a Trojan to set it up, thereby allowing them future access at their leisure. 

3.Black Hat - Just like in the old westerns, these are the bad guys. A black hat is a cracker. To add insult to injury, black hats may also share information about the “break in” with other black hat crackers so they can exploit the same vulnerabilities before the victim becomes aware and takes appropriate measures… like calling Global Digital Forensics! 

4. Bot - A bot is a software “robot” that performs an extensive set of automated tasks on its own. Search engines like Google use bots, also known as spiders, to crawl through websites in order to scan through all of your pages. In these cases bots are not meant to interfere with a user, but are employed in an effort to index sites for the purpose of ranking them accordingly for appropriate returns on search queries. But when black hats use a bot, they can perform an extensive set of destructive tasks, as well as introduce many forms of malware to your system or network. They can also be used by black hats to coordinate attacks by controlling botnets. 

5. Botnet – A botnet is a network of zombie drones under the control of a black hat. When black hats are launching a Distributed Denial of Service attack for instance, they will use a botnet under their control to accomplish it. Most often, the users of the systems will not even know they are involved or that their system resources are being used to carry out DDOS attacks or for spamming. It not only helps cover the black hat’s tracks, but increases the ferocity of the attack by using the resources of many computer systems in a coordinated effort. 

6. Cookies – A cookie is a small packet of information from a visited webserver stored on your system by your computer’s browser. It is designed to store personalized information in order to customize your next visit. For instance, if you visit a site with forms to fill out on each visit, that information can be stored on your system as a cookie so you don’t have to go through the process of filling out the forms each time you visit. 

7. Cracker - When you hear the word hacker today, in reality it is normally referring to a cracker, but the two have become synonymous. With its origin derived from “safe-cracker” as a way to differentiate from the various uses of “hacker” in the cyber world, a cracker is someone who breaks into a computer system or network without authorization and with the intention of doing damage. A cracker may destroy files, steal personal information like credit card numbers or client data, infect the system with a virus, or undertake many others things that cause harm. This glossary will give you an idea of what they can do and some of the means they use to achieve their malicious objectives. These are the black hats. 

8. Denial of Service Attack (DOS) – A Denial of Service attack is an attack designed to overwhelm atargeted website to the point of crashing it or making it inaccessible. Along with sheer numbers and frequency, sometimes the data packets that aresent are malformed to further stress the system trying to process the server requests. A successful Denial of Service attack can cripple any entity that relies on its online presence by rendering their website virtually useless. 

9. Distributed Denial of Service Attack (DDOS) - A Distributed Denial of Service attack is done with thehelp of zombie drones (also known as a botnet) under the control of black hats using a master program to command them to send information anddata packets to the targeted webserver from the multiple systems under their control. This obviously makes the Distributed Denial of Service attack even more devastating than a Denial of Service attack launched from a single system, flooding the target server with a speed and volume that is exponentially magnified. As is normally the case with zombie drones and botnets, this is often done without the user of the controlled system even knowing they were involved. 

10. Dumpster Diving - The act of rummaging through the trash of an individual or business to gather information that could be useful for a cyber criminal to gain access to a system or attain personal information to aid them in identity theft or system intrusion. One person’s garbage can indeed be a cyber criminal’s treasure. 

11.Easter Egg - A non-malicious surprise contained in a program or on a circuit board installed by the developer. It could be as simple as a text greeting, a signature, or an image embedded on a circuit board,or comprise a more complex routine, like a video or a small program. The criteria that must be met to be considered an Easter Egg are that it be undocumented, non-malicious, reproducible to anyone with the same device or software, not be obvious, and above all – it should be entertaining! 

12.Firewall - A firewall is a security barrier designed to keep unwanted intruders “outside” a computer system or network while allowing safe communication between systems and users on the “inside” of the firewall. Firewalls can be physical devices or software-based,or a combination of the two. A well designed and implemented firewall is a must to ensure safe communications and network access and should be regularly checked and updated to ensure continued function. Black hats learn new tricks and exploit new techniques all the time, and what worked to keep them out yesterday may need to be adjusted or replaced over time. 


13.Gray Hat – A gray hat, as you would imagine, is a bit of a white hat/black hat hybrid. Thankfully, like white hats, their mission is not to do damage to a system or network, but to expose flaws in system security. The black hat part of the mix is that they may very well use illegal means to gain access to the targeted system or network, but not for the purpose of damaging or destroying data: they want to expose the security weaknesses of a particular system and then notify the “victim” of their success. Often this is done with the intent of then selling their services to help correct the security failure so black hats can not gain entry and/or access for more devious and harmful purposes. 

Saturday, 5 September 2015

Full form of computer related terms:

Full form of computer related terms:


Full form of computer related terms:
* HTTP - Hyper Text Transfer Protocol.
* HTTPS - Hyper Text Transfer Protocol Secure.
* IP - Internet Protocol.
* URL - Uniform Resource Locator.
* USB - Universal Serial Bus.
* VIRUS - Vital Information Resource Under Seized.
* 3G - 3rd Generation.
* GSM - Global System for Mobile Communication.
* CDMA - Code Divison Multiple Access.
* UMTS - Universal Mobile Telecommunication System.
* SIM - Subscriber Identity Module.
* AVI = Audio Video Interleave
* RTS = Real Time Streaming
* SIS = Symbian OS Installer File
* AMR = Adaptive Multi-Rate Codec
* JAD = Java Application Descriptor
* JAR = Java Archive
* JAD = Java Application Descriptor
* 3GPP = 3rd Generation Partnership Project
* 3GP = 3rd Generation Project
* MP3 = MPEG player lll
* MP4 = MPEG-4 video file
* AAC = Advanced Audio Coding
* GIF = Graphic InterchangeableFormat
* JPEG = Joint Photographic ExpertGroup
* BMP = Bitmap
* SWF = Shock Wave Flash
* WMV = Windows Media Video
* WMA = Windows Media Audio
* WAV = Waveform Audio
* PNG = Portable Network Graphics
* DOC = Document (Microsoft Corporation)
* PDF = Portable Document Format
* M3G = Mobile 3D Graphics
* M4A = MPEG-4 Audio File
* NTH = Nokia Theme (series 40)
* THM = Themes (Sony Ericsson)
* MMF = Synthetic Music Mobile Application File
* NRT = Nokia Ringtone
* XMF = Extensible Music File
* WBMP = Wireless Bitmap Image
* DVX = DivX Video
* HTML = Hyper Text Markup Language
* WML = Wireless Markup Language
* CD - Compact Disk.
* DVD - Digital Versatile Disk.
* CRT - Cathode Ray Tube.
* DAT - Digital Audio Tape.
* DOS - Disk Operating System.
* GUI - Graphical User Interface.
* HTTP - Hyper Text Transfer Protocol.
* IP - Internet Protocol.
* ISP - Internet Service Provider.
* TCP - Transmission Control Protocol.
* UPS - UninterruptiblePower Supply.
* HSDPA - High Speed Downlink Packet Access.
* EDGE - Enhanced Data Rate for GSM [Global System for MobileCommunication] Evolution.
* VHF - Very High Frequency.
* UHF - Ultra High Frequency.
* GPRS - General Packet Radio Service.
* WAP - Wireless Application Protocol.
* TCP - Transmission Control Protocol .
* ARPANET - Advanced Research Project Agency  Network.
* IBM - International Business Machines.
* HP - Hewlett Packard.
* AM/FM - Amplitude/ Frequency Modulation.
* WLAN - Wireless Local Area Network

Tuesday, 1 September 2015

How safe is your password?

How safe is your password?

The first step in protecting your online privacy is creating a safe password - i.e. one that a computer program or persistent individual won't easily be able to guess in a short period of time. To help you choose a secure password, we've created a feature that lets you know visually how safe your password is as soon as you create it.


Tips for creating a secure password:


Include punctuation marks and/or numbers.

Mix capital and lowercase letters.
Include similar looking substitutions, such as the number zero for the letter 'O' or '$' for the letter 'S'.
Create a unique acronym.
Include phonetic replacements, such as 'Luv 2 Laf' for 'Love to Laugh'.
Things to avoid:
Don't reuse passwords for multiple important accounts, such as Gmail and online banking.
Don't use a password that is listed as an example of how to pick a good password.
Don't use a password that contains personal information (name, birth date, etc.)
Don't use words or acronyms that can be found in a dictionary.
Don't use keyboard patterns (asdf) or sequential numbers (1234).
Don't make your password all numbers, uppercase letters or lowercase letters.
Don't use repeating characters (aa11).
Tips for keeping your password secure:
Never tell your password to anyone (this includes significant others, roommates, parrots, etc.).
Never write your password down.
Never send your password by email.
Periodically test your current password and change it to a new one.

Friday, 28 August 2015

DBMS Questions(81-90)

81. Which date function is used to find the difference between two dates?
datediff
for Eg: select datediff (dd,'2-06-2007','7-06-2007') output is 5
82..What are the different phases of transaction?
Different phases are
Analysisphase
RedoPhase
Undophase
83. What do you mean by flat file database?
It is a database in which there are no programs or user access languages. It has no cross-filed capabilities but is user-friendly and provides user-interface management.
84... What is a query?
A query with respect to DBMS relates to user commands that are used to interact with a data base. The query language can be classified into data definition language and data manipulation language.
85. What do you mean by Correlated subquery?
Sub queries, or nested queries, are used to bring back a set of rows to be used by the parent query. Depending on how the subquery is written, it can be executed once for the parent query or it can be executed once for each row returned by the parent query. If the subquery is executed for each row of the parent, this is called a correlated subquery. A correlated subquery can be easily identified if it contains any references to the parent
subquery columns in its WHERE clause. Columns from the subquery cannot be referenced anywhere else in the parent query. The following example demonstrates a non-correlated subquery.
E.g. Select * From CUST Where '10/03/1990' IN (Select ODATE From ORDER Where CUST.CNUM = ORDER.CNUM)
86. What are the primitive operations common to all record management systems?
Addition,
deletion
modification.
87. Name the buffer in which all the commands that are typed in are stored
‘Edit’ Buffer
88. What are the unary operations in Relational Algebra?
PROJECTION
SELECTION.
89. Are the resulting relations of PRODUCT and JOIN operation the same?
No.
PRODUCT: Concatenation of every row in one relation with every row in another.
JOIN: Concatenation of rows from one relation and related rows from another.
90.What is RDBMS KERNEL?

Two important pieces of RDBMS architecture are the kernel, which is the software, and the data dictionary, which consists of the system-level data structures used by the kernel to manage the database You might think of an RDBMS as an operating system (or set of subsystems), designed specifically for controlling data access; its primary functions are storing, retrieving, and securing data. An RDBMS maintains its own list of authorized users and their associated privileges; manages memory caches and paging; controls locking for concurrent resource usage; dispatches and schedules user requests; and manages space usage within its table-space structures