Author Archives: Marco Fontani

Working on Many Chains? Multiple Panes Will Ease the Pain! Learn How to Split Amped FIVE’s Viewer and Boost Your Work

Hello, Tip Tuesday’s loyal friends! With all the enhancement and restoration tools featured in Amped FIVE, it can easily happen that you are undecided about which filter is better to use in a specific case, or which filter configuration is the best. This week’s Tip will show you how to visually compare the output of different chains and hopefully settle the question quickly.

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Better to Take a Look Than to Overlook: Image Thumbnails May Contain Hidden Information, Authenticate Helps You Find Out!

Hello Amped blog readers! Following last week’s Tip Tuesday idea that “simple things matter”, today we’ll show you how one of the most straightforward filters in Amped Authenticate, that is, the Thumbnail filter, can sometimes reveal interesting information.

First of all, what is the image thumbnail? It is (well… it should be) a much lower resolution version of the image, commonly in the order of 160 x 120 pixels. It is mostly used by file/image manager applications for efficiently creating image galleries: they just need to decode a few thousand instead of millions of pixels during gallery creation and browsing, while the full-size picture will be decoded when the user “opens” it. The Exif standard provides rules for embedding the thumbnail into the image file as a stand-alone JPEG object, allowing to decode it without having to process the full-sized image.

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When Simple Things Matter: Learn Why Reversing the Video May Greatly Improve Your Results

Dear Amped Tip Tuesday fellows – welcome to this week’s Tip! Today we will show you how a very simple tool, the Reverse filter, can boost your results significantly. Ok, I can hear you say: “Oh dear, how will these Amped guys fill a Tip Tuesday with such a trivial filter?”. Keep reading and you’ll find out!

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Even the (Byte)Streams Can Tell More Than It Seems: Learn How to Spot Hidden Data in Images Using Amped Authenticate!

This week is Amped Authenticate‘s turn, and we are going to look at our images from a different perspective than usual, that is… their bytestream! We’ll see how Amped Authenticate’s Hex Viewer and Hex Strings filters can help you spot hidden information in your evidence images.

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Recaptured Images Are a Good Way to Fool Forensic Analysts… but Not those Equipped with Amped Authenticate!

Hello dear Amped Blog readers, welcome to this week’s Tip Tuesday. Today we’ll be dealing with one of the most sneaky kinds of fakes: recaptured images. A recaptured image is a “picture of a picture”: you display your (possibly forged) image on a screen, or you print it on paper, and then you take a picture of it. This apparently naive approach is much more clever than it seems: the obtained image will be a “camera original” image to all extents, so it will likely pass every test based on metadata/format analysis. Are we left alone against this subtle threat? Of course not, Amped Authenticate is here to help. Let’s find out how.

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Amped FIVE’s Motion Detection: the way to skip the noise and focus on the action!

Hi Amped Blog readers, welcome to this week’s Tuesday Tip! Although we do our best to make you love our Amped FIVE, we are still aware that you may have better things to do in your life than enhancing videos… so, what really makes us happy is to help you get the job done in the least amount of time! That’s why this week we’ll focus on how Amped FIVE’s Motion Detection filter can save you lots of time during triage.

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Amped Authenticate’s “Show Saturation” Feature Saves You from April Fools!

April Fools’ Day has just passed and we hope you didn’t go through any nasty trick! Alas, for people working with digital evidence, the risk of getting fooled by some ambiguous finding is always around the corner. In the case of digital image forensics, among the most frequent pitfalls, we find false positives produced by forgery localization algorithms (that is, when an algorithm marks as manipulated a region that was not so). Today’s Tuesday Tip deals with them and shows how Amped Authenticate helps you rule out some of them.

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Did you know Amped FIVE lets you work with hindsight?

Hello Amped friends, welcome to this week’s Tip Tuesday! Today we’ll focus on a feature that is intrinsically part of Amped FIVE since always but is often overlooked by users. I’m talking about the possibility of changing parameters of a filter that lays at the beginning of a long chain while watching the effect on the final output. The “while” in the previous sentence is not incidental… it can save you lots of time and help you reach much better results! Let’s see what this is about.

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Is your image embedded in a PDF file? No worries, Amped Authenticate can handle that!

Welcome to this week’s Tip Tuesday! Today we are showing you an interesting, perhaps a bit hidden, functionality of Amped Authenticate. There is no need to introduce the PDF file format: it is surely the most widespread format for sharing digital documents. Therefore, it may easily happen that you have to deal with a PDF containing images and that some of them get questioned.

What would you do in such a case (after realizing that if you drag-and-drop the PDF into Amped Authenticate, nothing happens, because it’s not an image file)? Would you take a screen capture of the picture and work with that? “Nooo!” – I hope you said! Screenshots are evil for image forensics! Ok, you would get some pixels to work with, but you would lose all metadata, you would lose encoding properties, you could be recompressing data… That means you cannot check image integrity, and finding manipulations becomes much harder. No, there’s a better way of dealing with images embedded in PDFs, and we’ll show you how!

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