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   Recuva is a free file recovery program that makes it extremely easy to locate files that were once thought to be lost forever
How to Manually Remove a Virus from your Computer
   This guide focuses on manually removing viruses and malware from your computer.
How to remove a Trojan, Virus, Worm, or other Malware
   This article will focus on those malware that are considered viruses, trojans, worms, and viruses, though this information can be used to remove the other types of malware as well.
How do I remove a computer virus
   If your computer is infected with a virus, you'll want to remove it as quickly as possible. A fast way to check for viruses is to use an online scanner, such as the Microsoft Safety Scanner.
Manually Removing PC Viruses
   After reading this turtorial im sure you will know how to manual remove most of the virus lurking around. But that dosnt mean you shouldnt have any anti virus on you computer!
How to Manually Remove Viruses   (removal tool screenshots)   (msconfig screenshots)
   A virus can damage a computer's operating system in ways that prevent the automated removal of the virus using software. Sometimes there is no option other than to manually remove the virus
Manually Removing a Virus
   This article may assist anyone struggling to remove a virus, trojan or malware from their computer. All screenshots were taken from Windows XP, but the techniques also apply to Vista and Windows 7.
The Anti-Malware Testfile
   This file is to test your antivirus. This test file has been provided to EICAR for distribution as the "EICAR Standard Anti-Virus Test File", and it satisfies all the criteria listed above.
Free Antivirus Reviews
   Free antivirus utilities do everything their commercial cousins do, and the best free ones do it better than many for-pay competitors.
Panda Free Antivirus   (screenshots)
  An amazing antivirus that is able to detect viruses, trojans, worms, spyware, dialers, hacking tools other security risks.
MalwareBytes Free   (screenshots)
   Malwarebytes Anti Malware is one of the best malware detectors available. It’s an excellent addition to your existing anti-virus software.
Bitdefender Free   (screenshots)
   Bitdefender Antivirus Free Edition shares some of the revolutionary technologies that allowed our main product line to outpass major competitors such as AVG, Avast or Avira.
   Regardless of whether you’re aware of their existence, viruses and other malware often slow application processes and ramp up your CPU usage, while simultaneously modifying integral files and the appearance of your desktop along the way.
   As you look for anti-spyware software, one of the first things that you will realize is that there is an abundance of choices available on the market.
   The Microsoft Malicious Software Removal Tool is an anti-malware utility that checks computers running Windows for infections by specific, prevalent malicious software and helps remove malware and any other infections found.


CCleaner    (Screenshots)
 we were able to clean our temporary Internet files, cookies, history, and cache in both I. E. and Firefox at the same time
Advanced SystemCare Free    (Screenshots)
 Optimizing & Cleaning Powerfully and Securely. Detects and removes spyware, adware and other malware
Auslogics Registry Cleaner    (Screenshots)
 Registry Cleaner will clean, repair and optimize your Windows registry to eliminate errors and crashes
Why Using a Registry Cleaner Won’t Speed Up Your PC or Fix Crashes
 We’ve said it again and again: Registry cleaners don’t speed up your PC. At best, they’re a waste of time — and often money.
Glarysoft's Registry Repair    (Screenshots)
 It analyzes more than a dozen different areas in your registry,and can identify up to 18 types of errors. Makes backups of any registry change made
Comodo Registry Cleaner    (Screenshots)
 Comodo System Cleaner collects three free and useful cleaning utilities: Registry Cleaner, Disk Cleaner, and Privacy Cleaner
Eusing Free Registry Cleaner    (Screenshots)
 Eusing Free Registry Cleaner will scan your registry looking for 'Missing Shared DLLs', 'Invalid ActiveX keys', 'Invalid Paths', 'Missing Shortcut References', 'Missing Files and Folders'. It also lets you backup your registry before applying any changes
Best Free Windows Registry Cleaner
 CCleaner is actually a free system cleanup utility that happens to also include an option for cleaning the registry. I’ve already debated the worthiness of system cleaning software before and concluded that basically, yes, some tools do actually work in these cases.

Registry Backup

microsoft support
How to back up and restore the registry in Windows
Windows 7: Registry - Backup and Restorel Registry Backup’s Registry Backup is a free tool that makes backing up and restoring the Windows registry easy

4 Best Free Registry Backup Software

These free registry backup software can safely backup registry, so that you can restore registry from the backups
Using this 'light-weight' and simple utility, you can create backups of Windows registry files to a location of your choice and then restore these files at a later date.
RegKey Backup
From Camtech 2000: RegKey Backup is a handy utility for making backups of Registry keys and their sub keys.
Registrar Registry Manager
ERUNT – Registry backup and Recovery Software

6 Free Software to Remove Temporary Files from Computer
Comodo System Cleaner
   Comodo System Utilities's combination of Registry Cleaner, Privacy Cleaner, and Disk Cleaner squeezes the maximum performance for your computer
   KCleaner is designed to be the most efficient Hard Disk cleaner, tracking every useless byte in order to give you all the ressources you may need for your documents
HardDrive Powerwash
   Hard Drive Powerwash FREE probably is one of the best freeware tools available to remove unnecessary files from your system.
Glary Utilities
   Glary Utilities is a selection of tools that can be used to both eliminate PC errors and optimize your PC.
   A full analysis of what all could be cleaned from the PC took no longer than 2 minutes, and this was done on a fairly large hard drive.
Registry Backup 1.7.0
   Registry Backup is a free utility that allows you to backup and restore your Windows Registry using Shadow Volume Services.

Mz Registry Backup
   When creating a backup, there are two choices: complete or custom. Simply name the backup file and push a button then registry has been duplicated.


Computer Password Recovery

Cain & Able   (screenshots)   (tutorial)
   Cain & Abel is a password recovery tool for Microsoft Operating Systems. It allows easy recovery of various kind of passwords by sniffing the network, cracking encrypted passwords using Dictionary, Brute-Force and Cryptanalysis attacks
John the Ripper

PasswordFox v1.56
PasswordFox is a small password recovery tool that allows you to view the user names and passwords stored by Mozilla Firefox Web browser.
Step-by-Step Guide to Resetting a Windows 7 Password
While this password reset procedure for Windows 7 would classify as a "hack" of sorts, there's no software to download or extraordinary computer skills required. If you can follow directions, you can reset your Windows 7 password this way.
How to Recover a Forgotten Yahoo! Mail Password
To reset your Yahoo! Mail password if you have forgotten the phrase or cannot access your account:
OpCrack   (screenshots)
   Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method.
Rainbow Crack   (screenshots)   (tutorial)
   RainbowCrack is a computer program which generates rainbow tables to be used in password cracking. RainbowCrack differs from "conventional" brute force crackers in that it uses large pre-computed tables called rainbow tables to reduce the length of time needed to crack a password drastically
How to Reset a Windows XP or Vista Password
If you've forgotten your user password for Windows XP or Vista, you can use the hidden Administrator account to reset your password. If you've locked yourself out of the Administrator account, there are still a couple of different ways that you can find or reset your passwords.
Algebra Equation Solving Calculator
RedCrab Calculator

Computer Certifications

List of Computer Security Certifications
   Credentialing is the process of establishing the qualifications of licensed professionals, organizational members or organizations, and assessing their background and legitimacy.
List of Security Certifications
   ENISA (the European Network and Information Security Agency). So if you are looking to get certified in the information security field please find below a list of available certifications and where you can get more information.
A complete list of computer and networking certifications
   The best free certification study guides, practice tests and forums!
GNS3 - an open source network simulator software   (screenshots)   (installation)   (tutorial-pdf)   (add-routers)   (examples)   (practice)   (vault)   (labs)   (initial configuration)   (working Cisco IOS)   (documentation)   (troubleshooting)   (Network Simulation Guide)
    Graphical Network Simulator-3 is a network software emulator. It allows the combination of virtual and real devices, used to simulate complex networks.
windows 7 network simulator
   It allows IT personnel to build virtual, simulated networks of devices without purchasing any additional hardware, for instance for testing purposes.
Braindump - Brain dump Web sites for exam preparation purposes are fairly common, especially for computer-related certification programs. Someone who has taken an exam might perform a brain dump by writing out as many of the questions as they remember, for distribution as a study guide for other people who intend to take the same exam. braindumps
Braindumps and free Practice tests Here you can download free practice tests for computer certifications CISCO GNS3Vault is offering you Cisco labs and scenarios that you can download and use with the GNS3 ELECTRICAL Electrical Exam Practice Tests Free Online Training & Tests Journeyman Electrician Practice Test Electrician Exams Practice Tests
Explore the NICCS guide to Cybersecurity Certifications
   The Department of Homeland Security has developed a list of organizations that provide cybersecurity certifications. The Federal Virtual Training Environment (FedVTE) also offers free courses for government employees and veterans to prepare for certifications.
Free CCNA Study Resources
   The CCNA certification (Cisco Certified Network Associate) is a very popular range of Cisco networking certifications aimed at intermediate network technicians
CompTIA Security+ CertificationGNS3 - an open source network simulator software.
   The Security+ certification from CompTIA is a foundation-level security certification suitable for those wishing to start out on an I.T. security career path
Cisco CCENT Certification
   The CCENT certification (Cisco Certified Entry Networking Technician) is an entry-level networking credential from Cisco aimed at bridging the gap to the more advanced Cisco certifications, such as the CCNA
hamachi network simulator
   Hamachi features a simple interface that enables you to create personal safe networks in just a couple of steps. At first sight, it all looks very easy to use. Plus your connection is conveniently protected by an AES-256 encryption algorithm. Cisco Exams CCNA, CCNP, CCDA, CCDP, CCSP, CCIP, CCIE & Others ccnp study guides, ccnp study material - 100% Real Exam Questions & Answers Accurate Answers Verified by Experts with Detailed Explanation All Graphics and drag-n-drop exhibits Free Download for ccnp study guides, ccnp study material

Free Network Tutorials

Free Networking tutorials, System Administration Tutorials and Security Tutorials
   Welcome to (Free Networking Tutorials, Free System Administration Tutorials and Free Security Tutorials). Here you can gain the basic and intermediate level knowledge in Networking, Network Security, and System Security absolutely FREE!.
Free Introduction to Network Security
   With the increased use of electronics media in our personal lives as well as businesses, the possibility of security breach and its major impact has increased. The theft of personal identity, credit card information, and other important data using hacked user names and passwords have become common these days
Professor Messer’s CompTIA SY0-301 Security+ Training
   This is the index to our free CompTIA SY0-301 Security+ training course videos. All of our training videos are completely free; watch all of our videos online right now!
Free Training Videos for System Administrators
   LearnItFirst is one of the premier online training providers for Microsoft sysadmins worldwide.
Free Online Systems Administration Training Classes
   Sys Admins will always have a job because our reliance on operating systems, hardware, applications and platforms grows more every day, and these systems continually become outdated or need maintenance.
Free Network Monitoring and Analysis Tools
   Here are 20 of the best free tools for monitoring devices, services, ports or protocols and analyzing traffic on your network.
Top 10 Free System Troubleshooting Tools for SysAdmins
   These tools should help you, as an admin, to fix the problem or identify the root cause more quickly. You can either use these tools yourself, or provide them to a user who is experiencing the issue, for them to gather the information needed.
101 Free Admin Tools
   We know administrators love tools that make life easier – especially when they’re free! So here are 101 of them!
Computer Forensics for Beginners Tutorial
   These comprehensive Computer Forensics video tutorials explain and demonstrate many different skills, all targeted towards legal or investigative questions in relation to a computer.
Penetration Testing and Ethical Hacking
   Cybrary is a free community where people, companies and training come together to give everyone the ability to collaborate in an open source way that is revolutionizing the cyber security educational experience.
Learn the fundamentals of cybersecurity.
   SANS Cyber Aces Online makes available, FREE and online, selected courses from the professional development curriculum offered by The SANS Institute, the global leader in cyber security training.
Cyber Security for Beginners
   Learn how to secure your online world in just 5 weeks of FREE cyber security training!
Cyber Security for Small Business Owners
   Learn how to protect your business in 7 weeks of FREE cyber security training!

Free Network Software

Kismet wireless network detector
Kismet is a wireless network detector, sniffer, and intrusion detection system. Kismet works predominately with Wi-Fi (IEEE 802.11) networks, but can be expanded via plug-ins to handle other network types.
This tool is used as a brute force tool for cracking WPA-PSK, considered the “New WEP” for home Wireless Security
This is a very easy to use tool that can be used to sniff and crack WEP keys.
Wireshark   (Tutorial)   (Screenshots)   (Tutorial PDF)   (Training)   (Certification)
Ethereal can scan wireless and Ethernet data and comes with some robust filtering capabilities. It can also be used to sniff-out 802.11 management beacons and probes and subsequently could be used as a tool to sniff-out non-broadcast SSIDs.

Computer Forensics Training

Computer forensics is used to find legal evidence in computers or storage devices.
Free Online Computer Forensics Courses
   Free online computer forensics tutorials and courses can be found at universities like the University of Washington, University of South Florida, and the University of Pittsburgh
Free Online Forensics Training
   National Forensic Science Technology Center (NFSTC) has produced a great selection of online forensics training programs, many of which are made freely available thanks to grant assistance
    List of Free Online Computer Forensics Courses
   Learn about computer forensics with these free online courses. See the full list of free computer forensics courses
    Introduction to computer forensics and investigations
    This free course, Introduction to computer forensics and investigations, provides practical demonstration in a clear and accessible format.
22 Popular Computer Forensics Tools
   The goal of Computer forensics is to perform crime investigations by using evidence from digital data to find who was the responsible for that particular crime.
   If you are into file forensics or if you’re simply trying to see whether a file is infected or not without installing an antivirus, then Hyperfile is the right product for you. Powered by 42 anti-virus scanners in the VirusTotal infrastructure, the application can analyze files, MD5 hashes and URLs
Computer forensics software
   In common with many other professions, the field of computer forensic investigation makes use of tools to allow practitioners to carry out their tasks effectively and efficiently.
20 Free Digital Forensic Investigation Tools
   Here are 20 of the best free tools that will help you conduct a digital forensic investigation.
Computer Forensics Free Tools
   Examiners are tasked with not only finding that data, but understanding how it is all connected – and then helping others understand the evidence flow at every level.
Free computer forensic tools
   Our list of over 140 free tools, updated several times year, is provided as a free resource for all
Free Digital Forensics Software Tools
   Here are some digital forensics software tools to find and analyze evidence more efficiently
    List of Free Online Computer Forensics Courses and Classes
Learn about computer forensics with these free online courses.
    Free online courses on forensic science
Crime scene investigation and forensic analysis are competitive niches, and you should use any edge you can get – especially as the quality of the online courses is really high.
    55+ Free Online Psychology Courses
55+ Awesome Free Online Psychology Courses & Certificates
Introduction to computer forensics and investigations
   In this course you will be looking at two short videos and then doing some practical work with your computer looking at some of the artefacts left behind by ordinary computer use.
      Computer Forensic Software for Windows
Computer Forensics Software for Windows
   A list of NirSoft utilities that can be used by Forensic examiners
     IEHistoryView   (screenshots)
   IEHistoryView extracts information from the history file (index.dat) of Internet Explorer.
    IECacheView   (screenshots)
   IECacheView extracts information from the cache files (index.dat) of Internet Explorer.
    IECookiesView   (screenshots)
   IECookiesView extracts the content of all cookie files stored by Internet Explorer.
    IE PassView   (screenshots)
   IE PassView extracts the Web site passwords stored by Internet Explorer.
    MozillaCacheView   (screenshots)
   MozillaCacheView extracts the details of all cache files stored by Mozilla Firefox.
    MozillaHistoryView   (screenshots)
   MozillaHistoryView extracts the details of all browsing history stored by Mozilla Firefox.
    MozillaCookiesView   (screenshots)
   MozillaCookiesView extracts the content of all cookie files stored by Mozilla Firefox.
    PasswordFox   (screenshots)
   PasswordFox extracts the Web site passwords stored by Firefox Web browser.
    OperaCacheView   (screenshots)
   OperaCacheView extracts the details of all cache files stored by Opera Web browser.
    OperaPassView   (screenshots)
   OperaPassView extracts the Web site passwords stored by Opera Web browser
    ChromeCacheView   (screenshots)
   ChromeCacheView extracts the details of all cache files stored by Google Chrome Web browser.
    MyLastSearch   (screenshots)
   MyLastSearch utility scans the cache and history files of 4 Web browsers (IE, Firefox, Opera, and Chrome), and locate all search queries made with the most popular search engines (Google, Yahoo
and MSN) with popular social networking sites (Twitter, Facebook, MySpace).
   Extracts the contacts of Windows Live Messenger stored inside the contacts.edb file.
SpyStudio 2.9.2
   The books Malware Forensics: Investigating and Analyzing Malicious Code and Malware Forensics Field Guide for Windows Systems discuss one way SpyStudio can be used to fight malware
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