Skip to content
Learnearn.uk » IB Computer Science » Causes of data loss – Why do we need backups?

Causes of data loss – Why do we need backups?

Hardware

Hardware Failure

This could include the failure of storage devices such as hard drives, SSDs (Solid State Drives), or RAID (Redundant Array of Independent Disks) arrays.

Hardware failure may also involve issues with other components such as power supplies or memory modules.

Example

A hard drive in a company’s server fails due to mechanical issues, leading to the loss of important customer databases and financial records.

Software

Software Corruption

Errors in software applications or operating systems can lead to data loss.

This might occur due to bugs, glitches, or conflicts between different software components.

Example

A software bug in an accounting application causes it to incorrectly calculate financial transactions, resulting in data corruption and loss of accurate financial records.

Human

Human Error

Accidental deletion of files, formatting the wrong drive, or improperly configuring systems can result in data loss.

Human error is a common cause of data loss and can happen at any level of an organization.

Example

An employee accidentally deletes a folder containing critical project files instead of archiving it, resulting in the loss of weeks’ worth of work.

Cyberattacks

Malware and Cyberattacks

Viruses, ransomware, spyware, and other forms of malicious software can infect systems and corrupt or steal data. Cyberattacks like phishing or social engineering can also lead to unauthorized access to data or compromise sensitive information.

Example

A ransomware attack infects a hospital’s computer systems, encrypting patient records and demanding payment for their release, leading to data loss and operational disruption.

Disasters

Natural Disasters

Events such as fires, floods, earthquakes, or extreme weather conditions can damage physical infrastructure and lead to data loss if proper backup and disaster recovery measures are not in place.

Example

A flood damages a data center housing servers and storage equipment, causing irreparable physical damage and resulting in the loss of all data stored on-site.

Power

Power Outages

Unexpected power failures or surges can cause data loss, especially if systems are not equipped with adequate power backup solutions such as uninterruptible power supplies (UPS).

Example

A sudden power outage occurs during a system update, causing data corruption on the server and leading to the loss of recently updated files.

Image: Datacenter UPS Being Installed – Wikipedia

Theft

Theft or Loss of Devices

Theft or loss of laptops, mobile devices, or storage media can result in the loss of sensitive data if the devices are not properly encrypted or secured.

Example

A company laptop containing sensitive customer information is stolen from an employee’s car, resulting in the loss of confidential data and potential legal liabilities.

Updates

Software or Firmware Updates

In rare cases, updates to software or firmware can cause unintended consequences, leading to data loss or corruption if not thoroughly tested or applied correctly.

Example

A firmware update for a network-attached storage (NAS) device inadvertently introduces a bug that corrupts data stored on the device, leading to data loss for all users accessing the NAS.

Backup

Outdated or Inadequate Backup Procedures

Failure to regularly backup data, or using outdated or inadequate backup methods, can result in permanent data loss in the event of an incident.

Example

A small business fails to regularly back up its accounting database, and when the server crashes, they realize they have lost months of financial records with no backup available.

Environment

Environmental Factors

Environmental factors such as temperature, humidity, dust, and electromagnetic interference can also contribute to hardware degradation and data loss over time if not properly managed.

Example

Over time, exposure to high temperatures and humidity in a poorly ventilated server room causes hard drives to degrade and fail, resulting in data loss for the organization.