Investigation Unit Search Results

How To: Find Identifying Information from a Phone Number Using OSINT Tools

Phone numbers often contain clues to the owner's identity and can bring up a lot of data during an OSINT investigation. Starting with a phone number, we can search through a large number of online databases with only a few clicks to discover information about a phone number. It can include the carrier, the owner's name and address, and even connected online accounts.

News: U.S. Justice Department Indicts Iranian Hackers

Last week, the U.S. Justice Department issued criminal indictments against seven Iranian hackers. These hackers, working for private companies in Iran, are accused of orchestrating DDoS attacks against U.S. financial institutions from 2011-2013 as well as intruding into the control panel of a small dam in Rye, New York. It is thought that these attacks were a response to the U.S. tightening financial restrictions on Iran during those years and the NSA-based Stuxnet attack on their uranium enr...

Hack Like a Pro: Digital Forensics Using Kali, Part 1 (The Tools of a Forensic Investigator)

Welcome back, my greenhorn hackers! Lately, much of the discussion here on Null Byte has revolved around evading detection and not getting caught hacking. Several of you have written me asking for a series on evading detection and forensics, and while I began a series 5 months ago on just that, we have changed hacking platforms from BackTrack to Kali, which has a much more highly developed forensic toolset.

How To: Replace the Dryer's Idler Pulley

The dryer’s idler pulley provides tension to the dryer’s drum belt so the belt won’t slip when the drum is turning. It can become faulty over time due to increased friction. If your dryer is making a squeaking or squealing nose then the idler is probably faulty. Replacing this pulley is a simple project. Repair your noisy dryer with this step-by-step tutorial!

How To: Find the volume of a swimming pool

In this video, we learn how to find the volume of a swimming pool. To do this, you will first need to find the measurements of all the sides that are on the pool. After this, you will plug in the measurements that you found into the equation to find the volume. This equation is: V=AH, volume= area(height). So, plug in the area and the height to the equation for A and H and then multiply these two together. Once you do this, you will find the answer! Don't forget to label the units on the fina...

How To: Understand completing the square

In this video, we learn how to understand completing the square. First, you will write the quadratic expression out. Then, you will write the open bracket so you write it out in the correct format. Now, find the number in front of the 'x' term, which is the coefficient. Then, write this number on the other side of the equation in the parenthesis. From here, you will need to follow the proper rules of math to find out what the square is equal to. When you are finished, make sure you label the ...

How To: Find the arc length of a function

In this tutorial, we learn how to find the arc length of a function. All you're doing when finding arc length is finding the curve between 'a' and 'b'. Imagine this as a string you're pulling straight to see how long it is going to be. The formula says if your function is in 'y=x' you have to take one times the derivative squared. This is a basic formula that you will use to find the arc length. When you plug in your values to this equation, you will find the answer. Practice with the example...

How To: Find the area of a circle

In this tutorial, we learn how to find the area of a circle. The line from the middle to the edge of the circle is called the radius. Find what this is in your equation, then multiply (3.14 X radius x radius). This will always work out the area of a circle for you. So, do this equation with your calculator or by hand, then you will have the correct answer for the area. Make sure to add the units squared after you get the answer. If you are given the diameter (line all the way across), you wou...

How To: Find the area of a trapezoid

In this video, we learn how to find the area of a trapezoid. The formula to figure out how to find the answer is: Area= 1/2x (base1 x base2) x height. Now, find the bases and the height of the trapezoid. Remember that the height must always be perpendicular to the bases. Once you have found these, add the bases and multiply by the height. You can use a calculator to do this or do it off hand if you're good with math. For the third step, divide the answer by 2 and then write down the answers w...

How To: Find the interior & exterior angles of a triangle

In this tutorial, we learn how to find the interior and exterior angles of a triangle. I triangle has three angles and their measurement when added together will equal 180. For example, if one angle is 80 and another is 30, then start off saying the equation equals 180. Write in 80+30+X in front of the equals sign, then subtract the combined like terms from the 180. After this, you will have found the value of x, which will also be the measurement of the last angle. Make sure to write out the...

How To: Find abc, curve direction & y-intercept (quadratic eq)

In this tutorial, we learn how to find abc, curve direction & y-intercept (quadratic eq). First, you need to find the a,b, and c of the equation. A will equal what the coefficient is in the equation, B will equal the second, and C will equal the third term. This tells us if the numbers are positive or negative, so so know if the parabola opens up or down. To graph C, you will know what the y-intercept is going to be, then find the matching units. After this, you will use B to shape the parabo...

How To: Find the area of a triangle given three points

In this tutorial, we learn how to find the area of a triangle given three points. First, you will need to plot the points on a graph. After this, find the base and the height using the graph. Next substitute into area of a triangle formula and then evaluate. When you finally find the area of the triangle, then you will write down the answer ending it with the units. This is a simple way to find the area of the triangle, you just have to make sure you count correctly and have calculated the ar...

How To: Find the area of a square or rectangle in geometry

In this video tutorial, viewers learn how to find the area of a rectangle. The formula for finding the area of a rectangle is: A= b x h. The base is the horizontal bottom lie of the rectangle and the height is the vertical straight line of the rectangle. Whenever working with area, users must square the unit of measurement. To find the area of a square, multiple the side of the square twice (square it). This video will benefit those student viewers who are struggling with math, and are in nee...

How To: Tell whether your iPod Video is 5G or 5.5G

If you have a moderately old iPod and wish to perform some digital manipulation on it, you'll want to know exactly what version of the device it is. This video demonstrates a trick for determining simply and quickly whether an iPod video is the 5G or 5.5G version of the unit. All you have to do is open the music folder and see if there is a search tool or not! Who knew it was so easy?

How To: Make an origami buckyball flower

Feeling ambitious? With this guide, you'll learn how to make 3D buckyballs with origami, the traditional art of Japanese paper folding. For more information, including a step-by-step overview of the folding process, as well as to get started making your own colorful paper gift boxes, watch this free origami lesson.

How To: Resize an image for print using Adobe Photoshop CS4

In this how to video, you will learn how to re-size an image for printing using Photoshop. First, open the image you want to re-size in the program. Next, go to image and select image size. From here, you will see the current size of the image. You can change the units of the sizing. The resolution is the number of dots printed per inch. De-select re-sample to change the resolution of the image only when printing. 300 is the standard resolution. When you re-size the image, make sure constrain...

How To: Find an angle using alternate interior angles

In this video tutorial, viewers learn how to find an angle using alternate interior angles. Make sure that the angles are alternate interior angles. Alternate interior angles are angles that are on the inside of the parallel lines, and on the opposite side of the transverse. The transverse is the line that passe through the two parallel lines. If both angles are inside the line and are opposite to the transverse, then they are alternated interior angles. If you know two angles are alternate i...

How To: Find the entire length of a segment using the midpoint

This video shows the method to find the length of the total segment using the midpoint. Let the total line segment be PS. Let Q be the midpoint of PS. Let R be a point on the line segment QS. The first step involves the use of midpoint to find out the length of QS. We are given that QR = 1 and RS = 4.5. QS is equal to QR plus RS which is equal to 5.5. Now since Q is the midpoint of PS the total length of the segment PS is equal to twice the length of the segment QS. This is equal to 11 units....

How To: Build a natural clear water pond in your backyard

Chad from California Waterscapes takes you through the steps of installing a backyard pond. He begins by marking the location for the pond and stream using spray paint on the ground and by laying out the necessary equipment: the skimmer box and the waterfall unit. After digging out the pond Chad uses a laser level to determine the water level and place the skimmer box at this level. After all debris has been removed from the pond the underlayment and liner is placed in the pond followed by ro...

How To: Pump out the waste on your boat for winter

In this Outdoor Recreation video tutorial you will learn how to pump out the waste on your boat for winter. This video is from LIBoatersClub. Take your boat to the waste disposal area and secure it. Remove the cap from the waste tank. Be careful not to drop the cap. Operating the waste disposal unit ashore is very easy. Just switch on the pump, take in some water in to the hose and then attach the hose to the out let on your boat. Hold it tight and open the valve. It will suck out all the was...

How To: Easily find the area of a rhombus

In this video, you will learn how to find the area of a rhombus. The formula is A = 1/2 d1 * d2. The d1 is the diagonal inside the rhombus, while d2 is the other diagonal inside the rhombus. You will need to find the length of these lines in order to complete the formula. For example, if one length is 5 and the other is 4, then you should plug in the numbers into the formula. This will equal 20 divided by 2, or 10. 10 units squared is the answer to this particular problem. Viewing this video ...

How To: Draw atoms of different elements

An atom is a basic unit of matter consisting of a dense, central nucleus surrounded by a cloud of negatively charged ions. The nucleus itself is a mixture of positively charged protons amd electrically neutral neutrons. Different groups of elements have respective atomic numbers. You can use the periodic table as a tool to draw atoms of elements. The periodic table is organized into periods, groups and families. This video is a tutorial that reviews the subatomic particles found in an atom. I...

How To: Stack cut lumber

In this video tutorial, viewers learn how to stack cut lumber. This process if very simple to do. It will save the worker a lot of time, instead of measuring and cutting each piece individually. The stack cut will cut a number of lumber into the same length. This can be used to cut a single stack or an entire unit. Begin by squaring up one end of the stack. Mark your measurement on top. When you cut, it will leave a mark on the next board. Continue to cut through all the lumber. This video wi...

How To: Set up the Pocketwizard with a Nikon SB-800 and SB-900

In this Electronics video you will see how to set up the Pocketwizard with a Nikon SB-800 and SB-900. When you use Pocketwizard as a master to trigger the flash, the remote flashes for a working distance of 1600 feet as against 33 feet. First attach a Pocketwizard unit to the flash by using the Velcro stickers. Plug in the cable supplied with the Pocketwizard in the ‘Flash’ slot. Open the rubber door on SB-800 and plug in the other end of the cord into ‘sync’. Turn it ON. When the connection ...

How To: Fix garbage disposal jams without a plumber

In this video you are shown how to fix garbage disposal jams. Jams or electrical surges in your garbage disposal may make it appear that it is no longer working which is in fact not the case. Many people buy whole new units when that is unnecessary. If your garbage disposal jams, you can take a jam buster, which is basically an Allen wrench, and insert it into the small hole in the center of the bottom of your disposal. Twist until the jam, or whatever is obstructing your disposal, is broken....

How To: Graph a linear equation

In this video tutorial, viewers learn how to graph a linear equation. The linear equations example used in this video is y= 1/3x-3. The equation to graph a linear equation is y= mx+b. Now substitute each number into the equation. Therefore, m= 1/3 and b= -3. Begin by graphing the Y-intercept. M is the slope and b is the y-intercept. Plot the y-intercept on the -3 axis. Then move up once and to the side 3 times. This video will benefit those viewers who are struggling with this math unit and a...

How To: Stretch, shift & reflect the graph of a square root

Professor ElvisZap teaches you how to stretch shift and reflect the graph of a square root. A square root function is the opposite of a squared function. You start with y=square root of (x-1) it becomes 0<=x-1. then 1 <=x. You use the graph and solve it as you would for any function using small values first, then you have y=square root of x - 1, the domain 0<=x. This shifted the graph down 1 unit. 0=square root of x - 1, 1=square root of x, 1=x. Then the range is [-1 + infinity). Continue in ...

How To: Find the circumference of a circle quickly

In this instance we are going to Find the circumference of a circle by applying formula C=2pr where 'C' is circumference of a circle, approximate value of 'p' is 3.14 because it is irrational number and 'r' stands for radius i.e. half of diameter. So by applying this formula we can easily calculate circumference of a circle if radius is given or we can also calculate radius if circumference of a circle is given. One thing to remember is that unit we use for circumference of a circle is cm, in...

How To: Make a cool paper box

The box requires 2 6"x6" sheets of paper in 12 colors, that is 24 sheets in total, as well as one 6.25"x6.25" and one 6.5"x6.5" piece of paper, both preferably of the same color. Construction will also require some paper glue at certain points. The construction of the box is sectional; there is an outer box, with the inside "concertina" mechanism formed from 12 identical units glued together. The sectional nature of the construction would lend itself well to people working in groups in a clas...

How To: Disassemble a PS3 Blu-ray Disc drive

This video contains instructions for disassembling the Blu-ray Disc drive in your PlayStation 3. If you've never attempted to take apart the Blu-ray drive, then you must watch this, or you may possibly damage your PS3 for good! See how to teardown the Blu-ray player, all the way down to the laser transport. This is very useful if you need to replace the drive and want to save about $70-$100.

How To: Use crawl control on the 2010 Toyota 4Runner

Have you ever driven your car on rough terrains? Seems difficult to handle it. You can now steer, brake and accelerate at the same time with the new 2010 Toyota 4Runner. It has introduced a new technology called crawl control which helps determine optimum combination of speed and traction. It processes inputs from wheel speed sensors, vehicle's stability control computer, G-sensor and the engine control unit. To start this system, shift the transmission to neutral and then the transfer case t...

How To: Find the volume of a solid object

This video shows the process of finding the volume of solid. The video is simple and easy to comprehend. The video takes the example of a rectangular solid and a solid cylinder to explain the method to find the volume. The video shows the step by step method to find the volume. The first step involves finding the area of base. After this, the area is multiplied by the height to find the volume. The unit of measurement is also taken into account in the video.