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Debloating Software Through Piece-Wise Compilation and Loading
Debloating Software through Piece-Wise Compilation and Loading Anh Quach and Aravind Prakash, Binghamton University; Lok Yan, Air Force Research Laboratory https://www.usenix.org/conference/usenixsecurity18/presentation/quach This paper is included in the Proceedings of the 27th USENIX Security Symposium. August 15–17, 2018 • Baltimore, MD, USA ISBN 978-1-939133-04-5 Open access to the Proceedings of the 27th USENIX Security Symposium is sponsored by USENIX. Debloating Software through Piece-Wise Compilation and Loading Anh Quach Aravind Prakash Binghamton University Binghamton University [email protected] [email protected] Lok Yan Air Force Research Laboratory [email protected] Abstract This extraneous code may contain its own bugs and vulnerabilities and therefore broadens the overall attack Programs are bloated. Our study shows that only 5% of surface. Additionally, these features add unnecessary libc is used on average across the Ubuntu Desktop envi- burden on modern defenses (e.g., CFI) that do not dis- ronment (2016 programs); the heaviest user, vlc media tinguish between used and unused features in software. player, only needed 18%. Accumulation of unnecessary code in a binary – either In this paper: (1) We present a debloating framework by design (e.g., shared libraries) or due to software devel- built on a compiler toolchain that can successfully de- opment inefficiencies – amounts to code bloating. As a bloat programs (shared/static libraries and executables). typical example, shared libraries are designed to contain Our solution can successfully compile and load most li- the union of all functionality required by its users. braries on Ubuntu Desktop 16.04. -
Give Windows a Tuneup
Tune-up Your Windows PC Jere Minich Jminich (at) apcug.org APCUG Advisor, Region 5 - FL, GA, SC, AL Program Director - Lake Sumter Computer Society ProgramLSCS (at) gmail.com 1 This Presentation covers Windows 7 & 8.1,10 2 Overview of Windows Tune Up Slide Index • Computer Wear & Tear - 4 • Clean Up ‘Startup’ Folder - 33 • Start a System Backup - 5 • Delete Programs - 40 • Check Hard Drive - 9 • Set a Restore Point – 45 • Update & Downloads -13 • PC Security- 51 • Check Defenses - 18 • Logging on to the PC – 55 • Free up Drive Space – 22 • Recommendations - 70 • Disk Cleanup - 25 3 Aspects of Computer Wear and Tear • Windows Update - added dozens of patches to the operating system • Installed some new third-party software • Uninstalled other programs • Upgraded or patched apps and utilities • Altered, tuned, and tweaked various aspects of the system's user interface and software settings • Created and deleted myriad new: • emails, documents, photos, MP3s, videos, spreadsheets, etc. 4 System Backup System Image System Backup • Done for personal data – the data created and downloaded. Documents, movies, music, Photoshop files, work data, etc. • For personal data, do more regular backups, because documents and other personal data get changes and new additions frequently. System Image • An exact copy of the entire hard drive, including every single piece of data: operating system, hardware drivers, apps installed, settings, preferences, etc. Both will copy corrupted files and viruses 5 To back up programs, system settings, and files Go To: -
Remove ANY TOOLBAR from Internet Explorer, Firefox and Chrome
Remove ANY TOOLBAR from Internet Explorer, Firefox and Chrome Browser toolbars have been around for years, however, in the last couple of months they became a huge mess. Unfortunately, lots of free software comes with more or less unwanted add-ons or browser toolbars. These are quite annoying because they may: Change your homepage and your search engine without your permission or awareness Track your browsing activities and searches Display annoying ads and manipulate search results Take up a lot of (vertical) space inside the browser Slow down your browser and degrade your browsing experience Fight against each other and make normal add-on handling difficult or impossible Become difficult or even impossible for the average user to fully uninstall Toolbars are not technically not a virus, but they do exhibit plenty of malicious traits, such as rootkit capabilities to hook deep into the operating system, browser hijacking, and in general just interfering with the user experience. The industry generally refers to it as a “PUP,” or potentially unwanted program. Generally speaking, toolbars are ad-supported (users may see additional banner, search, pop-up, pop-under, interstitial and in-text link advertisements) cross web browser plugin for Internet Explorer, Firefox and Chrome, and distributed through various monetization platforms during installation. Very often users have no idea where did it come from, so it’s not surprising at all that most of them assume that the installed toolbar is a virus. For example, when you install iLivid Media Player, you will also agree to change your browser homepage to search.conduit.com, set your default search engine to Conduit Search, and install the AVG Search-Results Toolbar. -
What Are Kernel-Mode Rootkits?
www.it-ebooks.info Hacking Exposed™ Malware & Rootkits Reviews “Accessible but not dumbed-down, this latest addition to the Hacking Exposed series is a stellar example of why this series remains one of the best-selling security franchises out there. System administrators and Average Joe computer users alike need to come to grips with the sophistication and stealth of modern malware, and this book calmly and clearly explains the threat.” —Brian Krebs, Reporter for The Washington Post and author of the Security Fix Blog “A harrowing guide to where the bad guys hide, and how you can find them.” —Dan Kaminsky, Director of Penetration Testing, IOActive, Inc. “The authors tackle malware, a deep and diverse issue in computer security, with common terms and relevant examples. Malware is a cold deadly tool in hacking; the authors address it openly, showing its capabilities with direct technical insight. The result is a good read that moves quickly, filling in the gaps even for the knowledgeable reader.” —Christopher Jordan, VP, Threat Intelligence, McAfee; Principal Investigator to DHS Botnet Research “Remember the end-of-semester review sessions where the instructor would go over everything from the whole term in just enough detail so you would understand all the key points, but also leave you with enough references to dig deeper where you wanted? Hacking Exposed Malware & Rootkits resembles this! A top-notch reference for novices and security professionals alike, this book provides just enough detail to explain the topics being presented, but not too much to dissuade those new to security.” —LTC Ron Dodge, U.S. -
Revo Uninstaller
Revo Uninstaller Revo Uninstaller 1 / 3 2 / 3 Download Revo Uninstaller - A fast and reliable uninstaller that helps you delete registry entries, use different uninstall methods, disable or .... The program update to Revo Uninstaller Free 2.1.0 added an option to uninstall Windows Apps on Windows 8 and 10 systems to the software .... Revo Uninstaller adds some serious power to uninstalling programs, but not a lot of speed. It certainly runs circles around the default option in .... Revo Uninstaller Pro, made by VS Revo Group, uninstalls everything that is on your computer, even the most annoying of files. It also provides .... Revo Uninstaller allows you to uninstall stubborn programs that are not uninstalling properly through the Windows control panel.. Revo Uninstaller lets you uninstall programs using a simplified interface. If you have lots of software installed, you can reorder them, list them by icon or detail .... Revo Uninstaller 4 is the tool to declutter your Windows! Thanks for checking softwarestars.org to find a solution for your issues with uninstalling applications on .... Clean removal of any program from your PC. Uninstall and remove programs and other unwanted software in Windows with Revo Uninstaller Pro easily!. Revo Uninstaller helps you to uninstall software and remove unwanted programs installed on your computer even if you have problems uninstalling and cannot .... Uninstalling individual Windows 10 apps piecemeal can be tedious and time-consuming. But our favorite uninstaller utility, Revo Uninstaller, .... Revo Uninstaller helps you to remove any unwanted application installed on your computer.. Revo Uninstaller Free 2.1.1. More powerful replacement for Windows' built in program removal tool. -
Comodo System Cleaner Software Version 3.0
Comodo System Cleaner Software Version 3.0 User Guide Guide Version 3.0.011811 Comodo Security Solutions 1255 Broad Street STE 100 Clifton, NJ 07013 Comodo System Cleaner - User Guide Table of Contents 1.Comodo System- Cleaner - Introduction ................................................................................................................................. 3 1.1.System Requirements......................................................................................................................................................... 5 1.2.Installing Comodo System-Cleaner..................................................................................................................................... 5 1.3.Starting Comodo System-Cleaner....................................................................................................................................... 9 1.4.The Main Interface............................................................................................................................................................ 10 1.5.The Summary Area........................................................................................................................................................... 11 1.6.Understanding Profiles...................................................................................................................................................... 12 2.Registry Cleaner...................................................................................................................................................................... -
Flexible Installability of Android Apps with App-Level Virtualization Based Decomposition
1 Flexible Installability of Android Apps with App-level Virtualization based Decomposition Yi Liu, Yun Ma, and Xuanzhe Liu Abstract With the popularity of smartphones, users are heavily dependent on mobile applications for daily work and entertainments. However, mobile apps are becoming more and more complicated with more features and increasing size, part of which may be redundant to users. Due to the limitation of current installation mechanism, users have to download full-size applications instead of enjoy only the wanted features. Such full-size apps may consume more resources, including CPU, memory, and energy, which may hurt users’ enthusiasm for further installation. We first conduct an empirical study to characterize used features when users interact with mobile applications, and find that users only consume a small set features of target apps. To address this problem, we present AppStarscream, which offers to decompose and run Android apps with app-level virtualization. With AppStarscream, developers can decompose an existing app into multiple bundles, including a base bundle with frequently used pages and feature bundles with inactive pages. Then, end users can just download base bundle for daily use, and visit uninstalled pages on demand. We have implemented a prototype system and evaluated it with real-world apps showing that AppStarscream is efficient and practical. Index Terms App decomposition, App-level virtualization, On-demand installation I. INTRODUCTION In the past decade, we have witnessed the burst of mobile applications (a.k.a., apps). Apps have played an indispensable role in our daily life and work, and even changed the way that we interact with the external world. -
Good Downloads for Pc the Best Free Software for Your PC
good downloads for pc The best free software for your PC. The best free PC software programs aren’t about the cost (or lack thereof), they’re about a fresh opportunity—collections of code that put the dumb hardware in your computer to smart use, tools that can accomplish anything from balancing your household budget to helping cure cancer. Stocking your PC is an intensely personal task. But some programs are so helpful that we heartily recommend them to everybody. These free PC programs—a mix of must-haves and delightful auxiliary apps—deserve a place on almost any computer. There are times when a paid alternative makes sense, however. We’ve pointed out the circumstances where an upgrade over the free offering is warranted, along with our recommendation for the category. Editor’s note: This article is updated periodically with the latest information and newer software picks when applicable. A better browser. Before you roll up your sleeves and start slinging software around, make sure to snag your web browser of choice. Using Windows 10’s default Internet Explorer or Edge browser when you’re accustomed to something else feels like wearing somebody else’s shoes. (Blech.) That said, our money’s actually on Edge, which earned top honors in PCWorld’s extensive best browser showdown, barely nudging out Google's just-as-superb Chrome browser. But hey, they’re all free! Try before you “buy.” And if the big names aren’t your thing, there’s a legion of highly specialized alternative browsers begging for your attention. Is it worth it to upgrade to a paid version? Maybe. -
Understanding Feature Redundancy in Mobile Apps
2018 ACM/IEEE 26th International Conference on Program Comprehension What’s Inside My App?: Understanding Feature Redundancy in Mobile Apps Yao Guo, Yuanchun Li, Ziyue Yang, Xiangqun Chen Key Laboratory of High-Confidence Software Technologies (Ministry of Education) School of Electronics Engineering and Computer Science, Peking University, Beijing, 100871, China {yaoguo,liyuanchun,yzydzyx,cherry}@pku.edu.cn ABSTRACT 2016, while the number of apps in Google Play has reached As the number of mobile apps increases rapidly, many users three million in 2017. The total number of app downloads in may install dozens of, or even hundreds of, apps on a single Google Play and App Store worldwide was at 27 billion in smartphone. However, many apps on the same phone may the final quarter of 2017, according to App Annie. contain similar or even the same feature, resulting in feature With so many apps available for downloading, and most redundancy. For example, multiple apps may check weather of them free, most smartphone users have installed dozens, forecast for the user periodically. Feature redundancy may or even hundreds of, apps on their smartphones. According cause many undesirable side-effects such as consuming extra to the Yahoo Aviate study in 2014, Android users have an CPU resources and network traffic. This paper proposes average of 95 apps installed on their phones [29]. a method to identify common features within an app, and At the same time, many apps tend to include more and evaluated it on over four thousand popular apps. Experiments more features in a single app. A popular weather app may on a list of apps installed on actual smartphones show that the evolve into an “all-around” app with all kinds of features extent of feature redundancy is very high. -
REDDROID: Android Application Redundancy Customization Based on Static Analysis
REDDROID: Android Application Redundancy Customization Based on Static Analysis Yufei Jiang, Qinkun Bao, Shuai Wang, Xiao Liu, Dinghao Wu Pennsylvania State University fyzj107, qub14, szw175, xvl5190, [email protected] Abstract—Smartphone users are installing more and bigger they also provide a considerable amount of code components apps. At the meanwhile, each app carries considerable amount that can potentially enable code reusing attacks. Hence, it is of unused stuff, called software bloat, in its apk file. As a result, critical to inspect the existing Android applications on the the resources of a smartphone, such as hard disk and network bandwidth, has become even more insufficient than ever before. market and applications in development to identify and trim Therefore, it is critical to investigate existing apps on the market off software bloat. and apps in development to identify the sources of software bloat Previous research on reporting and removing Android ap- and develop techniques and tools to remove the bloat. In this plication bloat has either different scopes comparing with our paper, we present a comprehensive study of software bloat in An- work or incurs various limitations. Pugh [2] and Bradley et droid applications, and categorize them into two types, compile- time redundancy and install-time redundancy. In addition, we al. [3] proposed new algorithms and approaches to better further propose a static analysis based approach to identifying compressing class files into a package. Xu [4] presented an and removing software bloat from Android applications. We approach to finding reusable data structures. Specifically, by implemented our approach in a prototype called REDDROID, and identifying those data structures which share the same “shape” we evaluated REDDROID on thousands of Android applications but have disjoint lifetimes, this approach can reuse just one collected from Google Play. -
Opening up to Open Source Shawn W
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Richmond Richmond Journal of Law and Technology Volume 6 | Issue 5 Article 5 2000 Opening Up to Open Source Shawn W. Parker Follow this and additional works at: http://scholarship.richmond.edu/jolt Part of the Intellectual Property Law Commons, and the Internet Law Commons Recommended Citation Shawn W. Parker, Opening Up to Open Source, 6 Rich. J.L. & Tech 24 (2000). Available at: http://scholarship.richmond.edu/jolt/vol6/iss5/5 This Article is brought to you for free and open access by UR Scholarship Repository. It has been accepted for inclusion in Richmond Journal of Law and Technology by an authorized administrator of UR Scholarship Repository. For more information, please contact [email protected]. Volume VI, Issue 5, Spring 2000 Opening Up to Open Source Shawn W. Potter[*] Cite As: Shawn W. Potter, Opening Up to Open Source, 6 RICH. J.L. & TECH. 24 (Spring 2000) <http://www.richmond.edu/jolt/v6i5/article3.html>. [**] TABLE OF CONTENTS I. INTRODUCTION II. WHAT IS SOFTWARE? A. What is Open Source? B. The Open Source Movement III. SOCIETY SHOULD EMBRACE OPEN SOURCE A. Who's in charge? B. Transition Issues C. Practical Benefits D. Software Economics E. Copyright 1. Copyright and Open Source 2. Length of Copyright Terms IV. CONTEMPORARY OPEN SOURCE LICENSING AND TRANSACTIONS A. Infringement 1. Copyright Remedies 2. Determining Infringement B. Licensee and Licensor 1. Derivative Works 2. Terms, Conditions, and Warranties V. OPENING UP A. The Problem B. -
PC Maintenance & Windows Tune-Up
PC Maintenance & Windows Tune-Up Helping Your Computer to Run Its Best Includes a Bonus section on using the FREE Glary Utilities program! John Lortz - DiscoverSkills PC Maintenance & Windows Tune-Up Written by John Lortz DiscoverSkills.com Instructor editions are available for each of our computer course offerings Copyright © 2018 by John Lortz 11684 Meredith Ave Omaha, NE 68164 [email protected] www.discoverskills.com Book Revision 01282018 Who is this Guy, John Lortz? Yes, I am a real person, and I live in the United States, Midwestern town of Omaha, Nebraska. No, my office window does not look out over a field of corn, but go about 10 blocks to the north, and you’ll find one. And yes I did grow up in a small farming town… a very, very small town of 600, and loved every minute of the 18 years. Here in Omaha, I live with my wife Sue Leavitt (another professional geek) and my son Jack (a want-to-be professional baseball player), and lead a fairly common, Midwestern life. For 15 years, until just recently, I was Director of Education and Technology for the Senior Health Foundation (SHF), a non-profit that specialized in computer education for senior citizens. There, I developed all the class curriculum, books, and videos, as well as created and maintained the organization web sites, which included my current learning site, www.DiscoverSkills.com. I also taught most of the senior technology classes and workshops, with over 10,000 students passing through over 900 classes. Because of the weak economy, SHF closed its doors at the end of 2010.