This document discusses a seminar on data recovery. It defines data and data recovery, describes common causes of data loss like hardware errors and human errors. It provides tips for data recovery like backing up data frequently and tips to prevent further damage. The document outlines the data recovery process, including making a sector copy of the hard drive and sending it to a data recovery company. It also discusses techniques for data recovery like scanning probe microscopy.
Slides for a college course based on "Incident Response & Computer Forensics, Third Edition" by by Jason Luttgens, Matthew Pepe, and Kevin Mandia.
Teacher: Sam Bowne
Website: https://samsclass.info/121/121_F16.shtml
The development of intelligent network forensic tools to focus on specific type of network traffic analysis is a challenge in terms of future perspective.
This will reduce time delays, less computational resources requirement; minimize attacks, providing reliable and secured evidences, and efficient investigation with minimum efforts
Computer forensics is a very important branch of computer science in relation to computer and Internet related crimes. Earlier, computers were only used to produce data but now it has expanded to all devices related to digital data. 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.
For better research and investigation, developers have created many computer forensics tools. Police departments and investigation agencies select the tools based on various factors including budget and available experts on the team.
Slides for a college course based on "Incident Response & Computer Forensics, Third Edition" by by Jason Luttgens, Matthew Pepe, and Kevin Mandia.
Teacher: Sam Bowne
Website: https://samsclass.info/121/121_F16.shtml
The development of intelligent network forensic tools to focus on specific type of network traffic analysis is a challenge in terms of future perspective.
This will reduce time delays, less computational resources requirement; minimize attacks, providing reliable and secured evidences, and efficient investigation with minimum efforts
Computer forensics is a very important branch of computer science in relation to computer and Internet related crimes. Earlier, computers were only used to produce data but now it has expanded to all devices related to digital data. 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.
For better research and investigation, developers have created many computer forensics tools. Police departments and investigation agencies select the tools based on various factors including budget and available experts on the team.
data recovery training course online offline INTERSOFT Abdullah Khan
data recovery training course with logical data recovery , physical data recovery training, hard disk circuit repairing advance course full day training for 3 days
An overview of the Backup and Disaster Recovery Solution By Harris Computer Services.
Prepared and Presented By: Eric Smith of Harris Computer Services
Hard Disk Drive or External Hard Disk Drive is the place where the data of the computer are stored. If it crashes then it is quite difficult for the person who has lost all the data. Under the circumstances, hard disk recovery services provide a valuable help.
Stellar Phoenix Windows Data Recovery v7Prannay Shahi
Recover all your lost or deleted files such as Office documents, emails, spreadsheets, presentations, photos, videos, audio files and more with Free Windows Data Recovery Software.
Physical media damage, a.k.a physical damages to hard drives that can make data unrecoverable, is something every computer user should know about and take precautions against (especially if your profession requires you to work with sensitive information).
Back it up or pack it up! Did you know that 60% of all small businesses that lose their data are out of business within 6 months? Don’t be one of them! Your New Year’s Resolution for your business should be to setup a backup solution, or evaluate the one you have. Come to TechComm this month to learn more about proper backup solutions.
Sharing on Backups including why you should consider backups to a remote location. Presented at ICT Sharing during Contact Time on 22 Feb 2010 by Jeffrey Chua
If your server suddenly crashed and all your data was erased, how long would it take before your business was back up and running as usual? Do you have a solid plan to ensure your business is disaster proof in the event of a disaster?
StarCompliance is a leading firm specializing in the recovery of stolen cryptocurrency. Our comprehensive services are designed to assist individuals and organizations in navigating the complex process of fraud reporting, investigation, and fund recovery. We combine cutting-edge technology with expert legal support to provide a robust solution for victims of crypto theft.
Our Services Include:
Reporting to Tracking Authorities:
We immediately notify all relevant centralized exchanges (CEX), decentralized exchanges (DEX), and wallet providers about the stolen cryptocurrency. This ensures that the stolen assets are flagged as scam transactions, making it impossible for the thief to use them.
Assistance with Filing Police Reports:
We guide you through the process of filing a valid police report. Our support team provides detailed instructions on which police department to contact and helps you complete the necessary paperwork within the critical 72-hour window.
Launching the Refund Process:
Our team of experienced lawyers can initiate lawsuits on your behalf and represent you in various jurisdictions around the world. They work diligently to recover your stolen funds and ensure that justice is served.
At StarCompliance, we understand the urgency and stress involved in dealing with cryptocurrency theft. Our dedicated team works quickly and efficiently to provide you with the support and expertise needed to recover your assets. Trust us to be your partner in navigating the complexities of the crypto world and safeguarding your investments.
Show drafts
volume_up
Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
1. SHRI M.L. KAKADIYA MCA MAHILA COLLEGE AndSHRI M.L. KAKADIYA MCA MAHILA COLLEGE And
SHRI T.R. TANTI Msc.(IT & CA) MAHILA COLLEGESHRI T.R. TANTI Msc.(IT & CA) MAHILA COLLEGE
By : Suresh HirparaBy : Suresh Hirpara
A
Seminar On
Data Recovery
2. ContentsContents
-What is Data?-What is Data?
-What is Data recovery?-What is Data recovery?
-What is Data Loss?-What is Data Loss?
-Some Common Computer Problems-Some Common Computer Problems
-What Causes Data Loss?-What Causes Data Loss?
-Data Recovery Tips-Data Recovery Tips
-Data Recovery Process and Techniques-Data Recovery Process and Techniques
-Software used for recovery-Software used for recovery
-Advantages and disadvantages-Advantages and disadvantages
-Summary-Summary
3. What is Data?
->Computer data is information processed
or stored by a computer.
->This information may be in the form of
text documents, images, audio clips,
software programs, facts stored in a
person's mind or other types of data.
->Computer data may be processed by the
computer's CPU and is stored in files and
folders on the computer's hard disk.
4. What is Data recovery ?
->It is the process of restoring data from
damaged, failed, corrupted, or
inaccessible secondary storage media
when it cannot be accessed normally.
->Recovery may be required due to
physical damage to the storage device or
logical damage to the file system.
5. What is Data Loss?What is Data Loss?
->Data has accidentally been erased or
data control structures have been
overwritten.
->Data has been corrupted or made
inaccessible.
->Data is unable to be accessed from a
previous functioning computer system or
backup.
6. Common Computer ProblemsCommon Computer Problems
-Computer won’t boot up-Computer won’t boot up
-Applications that are unable to run or-Applications that are unable to run or
load dataload data
-Hard drive crashes-Hard drive crashes
-Corrupt files or data-Corrupt files or data
-Accidental reformatting of partitions-Accidental reformatting of partitions
-Inaccessible drives and partitions-Inaccessible drives and partitions
7. What Causes Data Loss?What Causes Data Loss?
Hardware ErrorHardware Error
Virus AttackVirus Attack
Software CorruptionSoftware Corruption
Human ErrorHuman Error
Intentional deletionIntentional deletion
Accidental overwriting of filesAccidental overwriting of files
Natural DisasterNatural Disaster
9. How to Prevent Data LossHow to Prevent Data Loss
Don’t upgrade hardware or softwareDon’t upgrade hardware or software
without having a backupwithout having a backup
Physically secure your system fromPhysically secure your system from
intrudersintruders
Use firewalls and virus protectionUse firewalls and virus protection
Be prepared for physical disastersBe prepared for physical disasters
10. Possibility of Data RecoveryPossibility of Data Recovery
The majority of data loss situations areThe majority of data loss situations are
recoverable.recoverable.
Computer storage systems may fail, but theComputer storage systems may fail, but the
data stored on them is not always completelydata stored on them is not always completely
lost.lost.
There are occasions when damage to data isThere are occasions when damage to data is
permanent and complete data recovery is notpermanent and complete data recovery is not
possible. However, some data is usuallypossible. However, some data is usually
always recoverable.always recoverable.
Data recovery professionals can recover dataData recovery professionals can recover data
from crashed hard drives, operating systems,from crashed hard drives, operating systems,
storage devices, servers, desktops, andstorage devices, servers, desktops, and
laptops using various recovery tools andlaptops using various recovery tools and
techniques.techniques.
11. Data Recovery TipsData Recovery Tips
DO’sDO’s
Backup your data frequently.Backup your data frequently.
If you believe there is something wrong withIf you believe there is something wrong with
your computer shut it down, do not continueyour computer shut it down, do not continue
to power up because you may do moreto power up because you may do more
damage.damage.
If you here a clunk, clunk sound when youIf you here a clunk, clunk sound when you
power up the drive, shut down! Do not panicpower up the drive, shut down! Do not panic
nor turn the power button on and off.nor turn the power button on and off.
Package the drive properly when you send itPackage the drive properly when you send it
in to a data recovery specialist. You canin to a data recovery specialist. You can
cause additional damage to the hard drive ifcause additional damage to the hard drive if
it is poorly packaged.it is poorly packaged.
12. Data Recovery TipsData Recovery Tips
DON’TSDON’TS
Do not ever assume that data recovery isDo not ever assume that data recovery is
impossible; even in the worst cases, such asimpossible; even in the worst cases, such as
natural disasters data recovery specialistsnatural disasters data recovery specialists
have been able to retrieve valuable data.have been able to retrieve valuable data.
Never remove the cover from the hard drive;Never remove the cover from the hard drive;
this will only cause further damage.this will only cause further damage.
Do not rest your computer on a moveableDo not rest your computer on a moveable
object or piece of furniture. Shock andobject or piece of furniture. Shock and
vibration can result in serious damage to thevibration can result in serious damage to the
hard drive.hard drive.
Do not subject the drive to extremeDo not subject the drive to extreme
temperatures changes both hot and cold.temperatures changes both hot and cold.
In the case where a drive has been exposedIn the case where a drive has been exposed
to water, fire or even smoke do not try toto water, fire or even smoke do not try to
power up.power up.
13. Data Recovery ProcessData Recovery Process
Data loss can occur because the hard drive mayData loss can occur because the hard drive may
have problems accessing the data it contains at ahave problems accessing the data it contains at a
software or logical level.software or logical level.
By making a complete sector copy (an exact copyBy making a complete sector copy (an exact copy
including all deleted information) of the hardincluding all deleted information) of the hard
drive, using a program such as Norton GHOST,drive, using a program such as Norton GHOST,
most data recovery programs search for deletedmost data recovery programs search for deleted
MFT (Master File Table) entries to undelete files.MFT (Master File Table) entries to undelete files.
If the MFT is corrupt or defective, this method willIf the MFT is corrupt or defective, this method will
not work. Some data recovery programs willnot work. Some data recovery programs will
ignore the MFT and search all of the unallocatedignore the MFT and search all of the unallocated
clusters to try to find and recover files.clusters to try to find and recover files.
14. Data Recovery ProcessData Recovery Process
The user may send a failed hard disk drive to aThe user may send a failed hard disk drive to a
private data recovery company that offersprivate data recovery company that offers
secure and confidential data recovery.secure and confidential data recovery.
The data recovery company will carefullyThe data recovery company will carefully
perform part replacement of the heads, spindleperform part replacement of the heads, spindle
motor and base casting, the electronics board,motor and base casting, the electronics board,
etc. in a clean room environment.etc. in a clean room environment.
Part replacement has historically beenPart replacement has historically been
successful for data recovery about 40%-60% ofsuccessful for data recovery about 40%-60% of
the time.the time.
15. Data Recovery ProcessData Recovery Process
When data is written to a medium, the headWhen data is written to a medium, the head
sets the polarity of most, but not all of thesets the polarity of most, but not all of the
magnetic domains.magnetic domains.
When a 1 is written to disk the mediaWhen a 1 is written to disk the media
records a 1, and when a 0 is written therecords a 1, and when a 0 is written the
media records a 0. However the actual effectmedia records a 0. However the actual effect
is closer to obtaining a 0.95 when a 0 isis closer to obtaining a 0.95 when a 0 is
overwritten with a 1, and a 1.05 when a 1 isoverwritten with a 1, and a 1.05 when a 1 is
overwritten with a 1.overwritten with a 1.
16. Data Recovery ProcessData Recovery Process
Normal disk circuitry is set up so that bothNormal disk circuitry is set up so that both
these values are read as ones, but usingthese values are read as ones, but using
specialized circuitry it is possible to work outspecialized circuitry it is possible to work out
what previous "layers" contained.what previous "layers" contained.
The recovery of at least one or two layers ofThe recovery of at least one or two layers of
overwritten data isn't too hard to perform byoverwritten data isn't too hard to perform by
reading the signal from the analog headreading the signal from the analog head
electronics with a high-quality digital samplingelectronics with a high-quality digital sampling
device, downloading the sampled waveform todevice, downloading the sampled waveform to
a PC, and analyzing it in software to recovera PC, and analyzing it in software to recover
the previously recorded signal.the previously recorded signal.
17. Data Recovery TechniquesData Recovery Techniques
Scanning Probe Microscopy (SPM)Scanning Probe Microscopy (SPM)
Magnetic Force Microscopy (MFM)Magnetic Force Microscopy (MFM)
Scanning Tunneling MicroscopyScanning Tunneling Microscopy
(STM)(STM)
18. Scanning Probe MicroscopyScanning Probe Microscopy
(SPM)(SPM)
Scanning probe microscopy (SPM) is a newScanning probe microscopy (SPM) is a new
branch ofbranch of microscopymicroscopy that forms images ofthat forms images of
surfaces using a physical probe that scans thesurfaces using a physical probe that scans the
specimen.specimen.
An image of the surface is obtained byAn image of the surface is obtained by
mechanically moving the probe in amechanically moving the probe in a raster scanraster scan ofof
the specimen, line by line, and recording thethe specimen, line by line, and recording the
probe-surface interaction as a function ofprobe-surface interaction as a function of
position.position.
19. SPM was founded with the invention of theSPM was founded with the invention of the
scanning tunneling microscopescanning tunneling microscope in 1981.in 1981.
A technique that is used to image andA technique that is used to image and
measure surfaces at the atomic level.measure surfaces at the atomic level.
20. Image showing the bits of a hardImage showing the bits of a hard
diskdisk
21.
22.
23.
24.
25. Some important types ofSome important types of
scanning probe microscopyscanning probe microscopy
AFM,AFM, atomic force microscopyatomic force microscopy
EFM,EFM, electrostatic force microscopeelectrostatic force microscope
FMM,FMM, force modulation microscopyforce modulation microscopy
MFM,MFM, magnetic force microscopymagnetic force microscopy
STM,STM, scanning tunneling microscopyscanning tunneling microscopy
SVM, scanning voltage microscopySVM, scanning voltage microscopy
SHPM, scanning Hall probe microscopySHPM, scanning Hall probe microscopy
26. Software Data ExtractionSoftware Data Extraction
Data extraction is the process of movingData extraction is the process of moving
data off of the imaged drive to anotherdata off of the imaged drive to another
destination location.destination location.
Data extraction software scans sectors ofData extraction software scans sectors of
the hard drive and restructures the filethe hard drive and restructures the file
system either in memory or another hardsystem either in memory or another hard
drive.drive.
The software can be used to copy theThe software can be used to copy the
recoverable data to a destination location.recoverable data to a destination location.
27. Software used for recoverySoftware used for recovery
CDRoller:CDRoller: Recovers data from optical discs.Recovers data from optical discs.
Data LifeSaver:Data LifeSaver: Data recovery for FAT and NTFS fileData recovery for FAT and NTFS file
systems.systems.
Data Recovery Wizard:Data Recovery Wizard: Microsoft Windows file recoveryMicrosoft Windows file recovery
utility.utility.
Drive Vaccine:Drive Vaccine: Microsoft Windows Auto Restore of files onMicrosoft Windows Auto Restore of files on
RebootReboot
FileSalvage:FileSalvage: A Mac OS X recovery program.A Mac OS X recovery program.
IsoBuster:IsoBuster: Recovers data from optical discs, USB sticks,Recovers data from optical discs, USB sticks,
Flash drives and Hard Drives.Flash drives and Hard Drives.
Recuva:Recuva: Microsoft Windows 2000 & later, FAT and NTFS.Microsoft Windows 2000 & later, FAT and NTFS.
TotalRecovery :TotalRecovery : Microsoft Windows. Bootable backup andMicrosoft Windows. Bootable backup and
recover system.recover system.
TuneUp Utilities:TuneUp Utilities: Microsoft Windows XP & later. A suite ofMicrosoft Windows XP & later. A suite of
utilities that has a file recovery component.utilities that has a file recovery component.
Power Data Recovery:Power Data Recovery: Data recovery software by MiniTool.Data recovery software by MiniTool.
1GB free data recovery for personal use.1GB free data recovery for personal use.
28. Advantages
Software for data recovery facilities
instant recovery of misplaced data from
external HDD, PenDrive or other similar
storage devices.
Store data for future use.
29. Disadvantages
To successfully use a data recoveryTo successfully use a data recovery
tool you will need to determine thetool you will need to determine the
cause of your data loss.cause of your data loss.
A simple reboot cause the overA simple reboot cause the over
writing of data.writing of data.
Data security.Data security.
Recovery may generate virus.Recovery may generate virus.
30. SummarySummary
Individuals or companies may experience dataIndividuals or companies may experience data
loss at any time for many reasons.loss at any time for many reasons.
There are various steps that should beThere are various steps that should be
implemented to help prevent data loss.implemented to help prevent data loss.
Data loss can be very costly and veryData loss can be very costly and very
upsetting.upsetting.
There are several data recovery techniques thatThere are several data recovery techniques that
have proven to be successful or partiallyhave proven to be successful or partially
successful in recovering data.successful in recovering data.
Utilizing qualified professional data recoveryUtilizing qualified professional data recovery
specialists will aid in the degree of success ofspecialists will aid in the degree of success of
data recovery.data recovery.
