Portable Encrypted Hard Drive with Secure PIN code access

The diskG* is the world’s most secure, compact and affordable USB2 portable hard drive, employing PIN code access with Military Grade 128-bit or 256-bit AES Hardware Encryption. The diskG* can only be accessed using a personalised 6-16 digit PIN code similar to using an ATM.

ALL data stored on the drive is encrypted in Real-Time, making it as fast and in many cases faster than any non-encrypted USB2 hard drive.

Should the diskG* be lost or stolen, the user can rest assured that the data stored on the drive is safe and cannot be accessed by any unauthorised third party, even if the hard drive is removed from its enclosure.

Select a device to purchase by clicking the prices below:


diskG* | USB 2.0 | 128-bit
diskG* | USB 2.0 | 256-bit
All prices exclude VAT and delivery.
US Dollar/Euro currency conversions are defined within the shopping cart.
All above products are available in stock and are delivered within 1-2 working days in Mainland UK.
For all other international deliveries time is dependent on your location.
Secure access with personalised 6-16 digit PIN Administration feature allows 1 Admin and up to 10 user PIN codes
Complete security with Real Time 128-bit or 256-bit Military Grade AES Hardware Encryption Compatibility with any OS - Windows, MAC, Linux
Encrypts all data on the fly, as fast as any USB2 hard drive Government accredited – the only portable hard drive to have been awarded CESG CCTM
When diskG* is not connected all data is encrypted Utilises FIPS PUB 197 validated Encryption Algorithm
Easy to install and set up as no software required also NO Admin Rights required Brute Force Hack Defence Mechanism
Easy to use – simply drag and drop data to the diskG* or use with any backup software VTC Technology
Convenience via integrated USB2 cable Wear resistant key pad
BUS powered – no mains power required Includes free travel pouch
Robust, portable and compact design with shock mounting to protect from drops Capacities of 250GB, 320GB, 500GB, 640GB, 750GB & 1TB
Guaranteed with 2 year warranty    

Why choose diskG*?

Did you know that tens of millions of external data storage devices are lost every year and this figure is rising. Have you ever considered the impact of losing your non-encrypted hard drive or USB flash memory key? Your data would be at the mercy of anyone who stumbles across it. Your personal videos may appear on YouTube, your business data sent to a competitor, your personal and financial information used for fraudulent purposes.

The Information Commissioner’s Office (ICO) now has the power to fine businesses and government bodies up to £500,000 for serious breaches of the Data Protection Act. This includes the loss of an unencrypted portable hard drive or USB flash memory key that contains customer data. The ICO has been very clear in advising businesses to encrypt all data that workers access, they also recognise that data which is encrypted and lost or stolen is not vulnerable to compromise.

Loss of confidential data can have a devastating effect on both businesses and consumers. It could lead to a hefty fine, the downfall of a business, embarrassment, job losses and adverse media focus. The diskG* can protect you against all of this.

How does it work?

Step 1 - Plug integrated USB2 cable in to any PC, MAC or Linux system

Step 2 - Enter your personal 6-16 digit PIN on the alphanumeric keypad

Step 3 - You're up and running

Once access to the diskG* is granted by entering the correct 6-16 digit PIN, data can be copied to the diskG* using any off the shelf backup software, or simply drag and drop files and directories using Windows Explorer. Once the diskG* is disconnected, all data is encrypted and cannot be accessed unless the correct PIN is entered.

Military strength Hardware encryption

The encryption chipset incorporated within the diskG* encrypts all data using 128-bit or 256-bit AES Hardware Encryption. The diskG* is the only USB hard drive to be awarded the CESG CCTM government accreditation. The diskG* also utilises FIPS PUB 197 validated Encryption Algorithm.

The recommended standard for symmetric encryption is AES (advanced Encryption Standard). The Committee of National Security Systems (CNSS) rates the AES algorithm as acceptable for encrypting top secret data on their AES policy fact sheet, stating “The design and strength of all key lengths of the AES algorithm (i.e. 128,192 and 256) are sufficient to protect classified information up to the SECRET level. TOP Secret information will require use of either the 192 or 256 key lengths.”

Brute Force Hack Defence Mechanism

The diskG* uses a three pronged approach to protect against a Brute Force Attack. The first step is to deny access to the drive until the drive can verify the user PIN. After six incorrect attempts the drive will lock itself, requiring the drive to be disconnected and then reconnected. This feature blocks automated attempts to enter PIN numbers. Lastly, after one hundred incorrect PIN attempts, the diskG* assumes it is being attacked and will destroy the encryption key and lock itself, rendering the data useless and requiring a total reset and reformat to redeploy the diskG*.

VTC Technology

The diskG* also incorporates Variable Time Circuit (VTC) technology, which thwarts “timing attacks” aimed at accessing the drive by studying the behaviour and infiltrating diskG*’s electronics.

What is the difference between software and hardware encryption?

Software encryption:
  • Complex passwords can be cracked easily and quickly with a Brute Force Attack
  • Simple password cracking software is readily available on the internet, often free of charge
  • Software encryption is vulnerable to key loggers – where every key pressed is logged in either a software or hardware key logger
  • Software encryption can be corrupted by viruses
  • Software encryption is much slower when compared to hardware encryption
  • Software encryption needs to be installed on each computer that the external storage device is used on
Hardware encryption:
  • The diskG* cannot be brute force attacked
  • The diskG* is not vulnerable to keyloggers as the PIN is entered on the unit rather than the keyboard
  • The diskG* is not vulnerable to malware or viruses
  • Encryption is performed in real-time thus there is no speed degradation
  • No software or drivers are required
Encryption Benefits
Easy to use keypad design Unlock the drive with your own unique 6-16 digit PIN code
Real-time 128 or 256-bit AES Hardware Encryption Encrypts 100% of your data in real-time (no speed degradation) and keeps your data safe even if the hard drive is removed from the enclosure
No software installation No software required to setup or operate - making it perfect for corporate deployments
Administrator feature Allows enrolment of up to ten unique user ID's and one administrator, making it a useful business collaboration tool
Features Benefits
Ultra-portable design Ideal to take between home and the office or on trips
Integrated cable Integrated USB 2.0 cable
Low powered design Bus powered from standard USB port
Extensive Shock Mounting Protects the drive with a 16-point omni-directional shock mounting system
Hard Drive Capacities 250GB, 320GB, 500GB, 640GB, 750GB & 1TB
Plug-n-Play and Compatible on any system No need to power down, just plug and go
Secure storage Excellent for notebook owners, road warriors, government, health care, insurance companies, financial institutions, HR departments and executives with sensitive data
Box Contents iStorage diskG* Drive with integrated cable, Quick Start Guide, Auxiliary power cable & neoprene travel pouch
Technical Specifications
Data Transfer Rates USB 2.0 - Up to 480Mbps
Power Supply 100% bus powered
Interface Hi-Speed USB 2.0
Buffer Size 8MB
RPM 5400
Average seek time 12 ms
Shock - non operating 1000G 1ms
Shock - operating 300G 2ms
Dimensions & weight 19mm X 84.5mm X 120mm (0.75" X 3.3" X 4.7") weight: 6.2 oz.
Warranty 2 years parts and labour
System Requirements Hardware: PC compatible computer with Pentium CPU or similar, 32MB of RAM, CD-ROM or CD-RW, USB 1.2 or 2.0, Apple G3 or later
Operating systems: Windows 2000, Microsoft XP, Vista or Windows 7, Mac OS 10.2 or greater, Linux
Ordering Information iStorage Part Numbers: IS-DG-128-xxxx (or) IS-DG-256-xxxx (xxxx=drive size in GBs)
*One gigabyte (GB) = one billion bytes; accessible capacity will be less and actual capacity depends on the operating environment and formatting.

Read all reviews

Read customer testimonials

Softpedia reviews the diskG and says "we have seen more and more hardware encrypted storage solutions making their way into the market, but the diskG is one of the most innovative of them."
Read the online review
PC Advisor
"PC Advisor includes diskG* in the "Top 5 best portable hard drives you can buy in the UK right now"
Read the online review
Business info review
"The diskG* from iStorage takes a belts and braces approach to data security.
Read the full review
TIMESONLINE "Gadget of the week"
The TIMESONLINE'S glowing review of the diskG*, awarding the device the prestigious title of "Gadget of the week"
Read the online review
The Daily Mail Online
"The iStorage diskG* could provide the answer on how best to transport sensitive data in the most secure way possible."
Read the full review | Read the online review
"a secure storage system if you want the advantages SSD has to offer"
Read the full review
"the pull of the diskG* is its admirable simplicity."
Read the full review | Read the online review
May 2010 - The Sunday Post (Gadgets up close)
"...the diskG* is little short of a godsend"
Read the full review

iStorage diskG* datasheet

Product comparison

View the iStorage Product Comparison Matrix

View the iStorage Product Comparison Matrix - German

* Previously known as diskGenie


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