Essay Writing Search Results

Exploit Development: How to Read & Write to a Program's Memory Using a Format String Vulnerability

Format strings are a handy way for programmers to whip up a string from several variables. They are designed to save the programmer time and allow their code to look much cleaner. Unbeknownst to some programmers, format strings can also be used by an attacker to compromise their entire program. In this guide, we are going to look at just how we can use a format string to exploit a running program.

How To: Steal macOS Files with the USB Rubber Ducky

If you need a tiny, flexible attack platform for raining down human-interface-device (HID) attacks on unattended computers, the USB Rubber Ducky is the most popular tool for the job. By loading the Ducky with custom firmware, you can design new attacks to be effective against even air-gapped computers without internet access. Today, you'll learn to write a payload to make "involuntary backups" through copying a targeted folder to the Ducky's USB mass storage.

Fearmongering 101: The Case of the Samsung Galaxy Backdoor Exploit

Yesterday, the Free Software Foundation published an article written by Paul Kocialkowski. A software developer for the the Android fork system Replicant, Paul stated that his organization discovered, and later patched, a "backdoor" vulnerability that existed in older Samsung Galaxy devices, including our beloved Galaxy S3s. Only problem is, it's kind of bullshit—but we'll get to that later.

How To: Multiply decimals together

In this tutorial we learn how to multiply decimals together. Start off by ignoring the decimal points on the equation and just imagining you have normal numbers. Then, multiply the two numbers that you wrote down together. Once you figure that out, it will be time to reintroduce the decimals. Look at the place the decimal is in each number in the beginning equation. Then, add the decimal places together between each of them. From here, place the decimal on the end of the answer you came up wi...

How To: Use a unit circle to find trig values

In this tutorial, we learn how to use a unit circle to find trig values. The unit circle has a radius one, use the definition of the trig functions to figure this out. Write them down if you need to, to remember what they are. You will also need two special triangles to help figure this out. Make sure you know the short side is opposite 30 degrees. Now, draw out your graph and find the ordered pair of pie, then find the y value of it. From here, find the cosine, tangent, and other units using...

How To: Rationalize a denominator that contains a surd

In this video, we learn how to rationalize a denominator that contains a surd. First, you need to rationalize the denominator by removing any square root sign. To do this, you will multiply the fraction but the flip of the denominator over itself, with the square root. Then, you will multiply the top by the bottom with the square root and this will remove it from the equation once you do the math to multiply it out. Once you're done, the number will be rationalized and you will have the answe...

How To: Practice balancing chemical equations

In this video, we learn how to practice balancing chemical equations. First, take a look at the first and second part of the equation. Write out how many atoms each of the elements has in it. Compare each of the sides to see what the difference is between them. Then, find the multiple of each of the elements until they are equal to each other. After you find this, continue to do this for all of the different elements in the equation. This will give you a balanced chemical equation when you ar...

How To: Determine if a point lies on a line in standard form

In this video, we learn how to determine if a point lies on a line in standard form. In order to do this, you will need to substitute the X and Y value with the ordered pair that is given. The X value is the first number and the Y value is the second number. Re-write your equation, substituting in the numbers to the appropriate spots. Now, simplify the equation by doing multiplication with the negatives and positives (if given). When you get through the equation, you will end up with the solu...

How To: Use the passive voice in Spanish

In this video, we learn how to use the passive voice in Spanish. The first way to use the passive voice in Spanish is to use "ser", the second is by using "se". First, recognize the subject, verb, and object in your sentence. Now, write your sentence using a passive voice, making the object the subject and change the tense of the verb. This is very easy to do and basically just flips the sentence around and changes out the tense of the verb. This will change the sentence into the passive voic...

How To: Use two digit numbers in Arabic

In this video, we learn how to understand two digit numbers in Arabic. Start off by having numbers written out in Arabic on a screen in front of you. Guess what these numbers are and how you say them. After this, have the answer come out on how to say the number and what it is, so you know if you were right or not. The pronunciation to these numbers is key, because they can end up sounding incorrect or you could make a whole new world with the slip of just one letter. Practice this for the ba...

How To: Read fiddle tablature

In this video, we learn how to read fiddle tablature. These will have an A part and a B part on them. You may see a repeat part along with a part that is written out more than once. A tablature shows what strings to play on and what finger to use instead of using notes. A "1" indicates putting the finger on the first string, and so on for the different numbers. Bar lines measure off a certain number of beats in each bar. Count the different beats and learn where the divided beats are so you k...

How To: Create an engraved text effect in Photoshop

In this video, we learn how to create an engraved text effect in Photoshop. First, start a new document in Photoshop and make it as large as you want it. Now, select the foreground color as a dark gray. Next, grab the rectangle tool and draw a shaped layer, making the color whatever you want it to be. Now, go to "layer", then "layer style", and "gradient overlay". Go to the gradient bar and mix light and dark grays or black to make a metal or chrome look as you prefer. After this, write in yo...

How To: Create a research binder

This video tutorial belongs to the Education category which is going to show you how to create a research binder. This binder will hold all your "how to" articles or research guides. You will need page dividers which you can make yourself or purchase. The dividers are meant to separate sections in the binder for ease of storing and retrieving all your research materials. You can have dividers for events, dates, contact details of people, places and "how to" articles. The dividers can have a f...

How To: Use a text box in Excel 2007

In this video, we learn how to use a text box in Excel 2007. To do this, you will go to the insert tab and then go to the text box and select text box. Now, draw yourself a text box then highlight and copy the text you want, then paste it in. now you will have a paragraph of text written on top of your cells. You don't have to copy and paste, you can type it in as well. If you want to format the text, right click in the box and then change the preferences you want to change to format the text...

How To: Play "Don't Stop Believin'" by Journey on the ukuele

Want to play "Don't Stop Believin'" on the ukulele? Learn how with this free video ukulele lesson from Ukulele Mike. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get started playing this song (famously covered o...

How To: Play "The Honey Tree" by the Mostar Diving Club on the ukulele

Want to play "The Honey Tree" on the ukulele? Learn how with this free video ukulele lesson from Ukulele Mike. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get started playing "The Honey Tree" on your own ukulel...

How To: Play "Kokomo" by the Beach Boys on the ukulele

Want to play "Kokomo" by the Beach Boys (sans Brian Wilson) on the ukulele? Learn how with this free video ukulele lesson from Ukulele Mike. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get started playing this ...

How To: Play "Pearly Shells" by Edwards & Pober on the ukulele

Want to play "Pearly Shells" by Edwards & Pober on the ukulele? Learn how with this free video ukulele lesson from Ukulele Mike. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get started playing this great tropic...

How To: Play "You Are My Favourite" by Sophie Madeleine on the ukulele

Want to play Sophie Madeleine's "You Are My Favourite" ("You Are My Favorite") on your ukulele? Learn how with this free video ukulele lesson from Sophie herself. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertory of songs. For more information, and to get...

How To: Create a professional resume

In this tutorial, we learn how to create a professional resume with Chuck Aranda. A professional resume shouldn't be very long. It should be around 1 page, and only a half of a page if it needs to be written on another page. Make sure that it not only looks professional and attractive, but it's also easy to read. Tailor your resume to each job you apply to, employers like to know you took time to apply to just their job instead of sending out your resume in mass. Make sure to use an easy to r...

How To: Play the "On Top of Spaghetti" song on the ukulele

Want to play "On Top of Spaghetti (All Covered with Cheese)" on your ukulele? Learn how with this free video ukulele lesson from Ukulele Mike, which presents a complete breakdown of the song and its chords. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertor...

How To: Play "I'll Be Home for Christmas" on the ukulele

Want to play the "I'll Be Home for Christmas" Christmas song on your ukulele? Learn how with this free video ukulele lesson from Ukulele Mike, which presents a complete breakdown of the song and its chords. Whether you play the ukulele or bass kazoo, there is no better way to improve your chops than by learning to play your favorite songs. Not only is it more fun and much easier than running drills or memorizing a chord book by wrote, it's obviously also a wonderful way to build your repertor...