Category: Cyber Security

Retailers today operate in a digital-first world where customer trust depends heavily on data security. Unfortunately, the retail industry has become a prime target for cybercriminals. From ransomware to third-party vendor attacks, breaches have exposed millions of customer records across the globe, damaging reputations and bottom lines.

Here are some recent examples of retail data breaches and what they teach us about the importance of managed cybersecurity.

Ransomware Disruptions

Major retail chains like Marks & Spencer faced ransomware attacks that disrupted payments and online orders, costing millions in downtime. Without strong incident response, retailers risk losing both revenue and customer confidence.

Credential-Stuffing Attacks

Brands such as The North Face saw thousands of accounts compromised through credential-stuffing. Even if payment data wasn’t exposed, breaches like this erode customer trust and highlight the need for multi-factor authentication and proactive monitoring.

Third-Party Vendor Risks

Luxury retailers including Louis Vuitton and Dior experienced breaches via external service providers. These incidents show how vulnerable supply chains can be, making vendor oversight and Zero Trust strategies critical.

Large-Scale Customer Data Leaks

Breaches at Neiman Marcus and Co-op exposed millions of customer records. Beyond immediate financial loss, these incidents led to compliance investigations and long-term brand damage.

How Managed Cybersecurity Prevents Retail Breaches

• 24/7 Threat Monitoring – Continuous monitoring ensures threats are detected and contained before they cause damage.

• Advanced Cyber Defenses – Endpoint detection, Zero Trust access, and multi-layered firewalls reduce vulnerabilities.

• Rapid Incident Response – Expert teams can isolate and remediate attacks in real time, minimising downtime.

• Compliance & Risk Management – MSSPs help retailers stay compliant with data protection laws and industry standards.

• Employee Training & Awareness – Regular phishing simulations and education empower staff to act as the first line of defense.

• Supply Chain Security – Vendor audits and third-party monitoring protect retailers from external weaknesses.

What Retailers Should Do Next

• Protect sensitive customer and payment data.

• Detect and stop breaches before they escalate.

• Build resilience against ransomware and phishing attacks.

• Strengthen compliance and supply chain security.

Ready to Safeguard Your Retail Business?

Don’t let your business become the next headline. At GPK Group, we help retailers prevent data breaches with proactive, managed cybersecurity solutions tailored to the retail environment. Visit GPK Group or contact us today to learn how our experts can protect your business from growing cyber threats.

Retail businesses in Australia are increasingly vulnerable to cyber threats. From ransomware and data breaches to phishing scams and point of sale compromises, the risks are real and evolving quickly. With strict privacy laws in place and growing customer expectations around data protection, strong cyber security practices are no longer optional, they are essential.

Whether you operate a single store or a nationwide chain, this cyber security checklist will help safeguard your business, your customers and your brand reputation. Explore our full Retail IT Solutions and Support to see how GPK Group helps Australian retailers strengthen every layer of their technology.

Keep Software and Systems Up to Date

Outdated software is one of the easiest ways cybercriminals gain access to your systems. Ensure:

• Operating systems and applications are regularly patched
• POS systems are updated with the latest firmware
• All third-party plugins or extensions are secure and maintained

If you run a small retail business without dedicated IT staff, explore our small business IT support to help manage updates, system performance and security.

Automated patch management tools can help ensure nothing is overlooked.

Secure Access with Strong Passwords and Multi-Factor Authentication (MFA)

Retail staff often use shared logins or repeat passwords, which increases risk. You should:

• Enforce strong, unique passwords for each user
• Require MFA for admin and sensitive accounts
• Use password managers to help staff securely manage credentials

This simple step prevents many brute-force and credential-stuffing attacks.

Protect Customer and Payment Data

Under the Privacy Act 1988 and PCI DSS requirements, retailers must safeguard customer information. Best practices include:

• Encrypting customer and payment data both in transit and at rest
• Limiting access to sensitive information to only essential staff
• Never storing full credit card details on-site or online

Partnering with secure payment gateways and POS vendors also helps reduce liability.

Train Staff in Cyber Awareness

Human errors are a leading cause of security breaches. It’s essential that retail staff undergo consistent training to stay alert and recognise potential threats.:

• Recognising phishing attempts and scam emails
• Safe internet and device usage
• Procedures for reporting suspicious activity

Your team’s awareness is key to preventing cyber incidents.

Secure Your Wi-Fi and Network Infrastructure

Retail stores often rely on wireless networks for POS, stock management, and guest access. To secure them:

• Use strong passwords and WPA3 encryption
• Segment guest Wi-Fi from internal networks
• Regularly monitor and restrict unknown device access

Working with an IT provider like GPK Group ensures proper network segmentation and real-time threat detection.

Back Up Data Regularly

If you’re hit with ransomware or suffer data loss, backups can save your business. Ensure:

• Daily backups of customer databases, financial records, and inventory data
• Backups are stored securely offsite or in the cloud
• Regular testing of backups to confirm data can be restored

A backup strategy is your safety net in case of emergencies.

Implement Endpoint Protection

All connected devices—registers, tablets, laptops—are entry points for attackers. Protect endpoints with:

• Antivirus and anti-malware software
• Firewalls and device encryption
• Remote wipe capabilities for lost or stolen devices

GPK’s managed IT services include comprehensive endpoint security solutions tailored to retail needs.

Have an Incident Response Plan

Breaches can still happen, despite having the best precautions. A response plan should outline:

• Immediate steps to contain and assess the breach
• Notification procedures for regulators and affected customers
• Roles and responsibilities for team members

Learn more about how GPK Group protects businesses through our comprehensive cybersecurity services tailored for Australian organisations.

Preparation reduces downtime, reputational damage, and compliance penalties.

Stay Secure with GPK Group

GPK Group delivers complete cybersecurity solutions for retail businesses in Australia. From secure payment systems and network protection to compliance support and team training, we provide everything you need to stay protected in today’s digital landscape.

Ready to secure your retail operations? Contact GPK Group today for a customised cybersecurity assessment.

Cryptolocker Protection and Removal

Cryptolocker is a sophisticated variant of ransomware that’s grown in infamy in recent years.

And while the original strain has been neutralised, copycat cyber security threats still exist. So for ease of use, we’re going to refer to them all as Cryptolocker.

So let’s look at what Cryptolocker is, and how you can provide Cryptolocker protection for your Brisbane business.

What is Cryptolocker?

Cryptolocker is a malware program that has shown itself to be more dangerous than standard ransomware.

Cryptolocker doesn’t just go after the files or devices on your network—it works faster, and goes further, and can affect an entire mapped drive. So your C: drive, E: drive, all of it.

And more insidious than that, it can also spread to external devices, such as USBs, external hard drives, and folders in your cloud networks.

Once Cryptolocker infects your computer, network, drives, or files, you’ll receive a notification telling you that your files have been encrypted. This will say that a ransom must be paid to retrieve them, and you can only unlock your files with a decryption ‘key’ provided by the hackers.

This response is timed, too. The original CryptoLocker ransomware gave victims 100 hours to pay the ransom, or their files are deleted. Copycat cyber security threats present themselves in much the same manner.

At present, Cryptolocker only affects those systems running Microsoft Windows. Mac users are safe, for now.

What is the impact of Cryptolocker?

Given its more aggressive and vicious spread, Cryptolocker can do more damage than your average ransomware. It can prevent access to entire drives, shutting down vast elements of your business operations. It can disrupt IT systems, and spread into IoT-connected devices, with the potential to bring entire supply chains to a standstill.

How to protect your business against Cryptolocker

There are a few key steps that provide your business with protection against cyber security threats like Cryptolocker.

• Protection from Cryptolocker begins with safe internet use protocol. Provide regular internet safety training for all your staff, and their families. After all, common sense isn’t always commonsense. Ensure that everyone knows they shouldn’t open suspicious emails, or anything from unknown email addresses.
• Make sure everyone knows what ransomware is, what Cryptolocker is, the potential effects, and how it can be spread. Provide clear instructions of what to do in the event a Cryptolocker attack occurs.
• Another way to improve Cryptolocker protection is to restrict user access. Ensure users only have access to files and folders that are necessary to do their job. This works to contain the damage; the less attack surface that ransomware has, the smaller its spread will be, and the less can be encrypted.
• Install whitelisting applications to ensure only approved software is running on your networks.
• Ensure your antivirus software is up to date and patched with the latest information.
• Ensure your operating systems are up to date and patched.
• Importantly, ensure your business has a thorough backup and recovery process in place. Regularly back up your data and files with secure, remote backups. Consider using both physical and cloud off-site storage, to provide multiple backup points.

How to remove Cryptolocker

But if protection against Cryptolocker is no longer an option, you’ll need to know how to remove the ransomware. Be warned though: this won’t decrypt your encrypted files. But it will stop the malware from spreading.

If you fall victim to a Cryptolocker attack, you should treat it the same as a ransomware attack:

Step 1. As soon as possible, isolate any infected drives, devices, or folders from your network. This should work to reduce the spread.
Step 2. Shut off any network connections.
Step 3. Perform a thorough antivirus scan of the infected devices and drives, running it as many times as necessary to remove all traces of the original infection.
Step 4. Restore the operating system to the latest backed-up version.
Step 5. Again, perform a thorough antivirus scan to ensure all traces of the Crytolocker have been removed.

However, we don’t actually recommend you perform the review yourself. Bring your infected devices in to GPK instead. We can perform a thorough review of your devices in a secure environment, to minimise any further cyber risk to your company.

Get Cryptolocker protection for your Brisbane business

The best defence against ransomware is to be prepared. And Cryptolocker protection is the same: the better prepared you are, the more regular your remote secure backups are made, and the tighter your security protocols, the best chance you have at minimising any damage from a Cryptolocker attack.

GPK Group provide full-scope IT cyber security for Brisbane businesses. We help ensure you have the right software and protocols in place to protect against cryptolocker, ransomware, and the latest cyber security threats.

Get in touch with us today to discuss a cyber security solution for your Brisbane business.

The Cost of Cyber Security Threats for Australian Businesses

We all know that cyber security threats are a real and present danger for Australian businesses. But just how much of a danger are they?

A quick look at the numbers tells us that cyber risks are set to damage Australian businesses big-time.

It’s estimated that by 2025 cyber crime is going to cost the world US$10.5 trillion annually. That’s such a huge figure that it’s practically incomprehensible.

And that’s not just in direct costs. This figure is a sum total of the damage caused by cyber security threats. It covers things like:

• Stolen business funds
• Stolen intellectual property
• The destruction of irreplaceable businesses data
• The loss of associated personal data
• Lost staff working hours caused by the associated cyber attacks
• The cost of investigation, clean-up, and business network restoration
• The cost for the business of getting back on its feet

And the really concerning thing about this is that cybercriminals know that these numbers are achievable. Particularly in Australia.

Australia isn’t prepared against large-scale cyber security threats

Back in 2019 the Australian Department of Defence undertook a review of Australia’s cyber risk preparedness measures. They ran through a series of cyber risk scenarios, determining potential cyber attacks and our response as a nation to these attacks.

The scenarios themselves started out fairly innocuous. Australians queuing online to buy tickets online to the 2022 AFL grand final would find the system is down. Unbeknownst to them, this is the first wave of a multi-step cyber attack. During this confusion, a second cyber attack would disrupt international supply lines, creating a shortage of supplies that keep our essential services running.

An alternate scenario saw cyber criminals launching attacks against critical infrastructure, like the power grid and food supply chains, or by taking control over autonomous vehicles.

While these scenarios took a country-wide focus, the unsettling this is that every Australian business has the potential to be a target of these attacks—if they haven’t already.

The cost of cyber security threats to Australian businesses

An IT security threat for a Brisbane business can end up costing on average $276,000. Per attack. For many businesses, that’s a number that they can’t recover from.

And with the rapid switch to remote work that we’ve seen in the past 18 months, cyber criminals have been given the opportunity to exploit business that simply aren’t prepared. In fact, the remote work revolution and work-anywhere phenomenon has highlighted the vulnerabilities in traditional business security systems.

This is starkly apparent in the context of home office scenarios. According to recent reports, the leading causes of cyber security threats and breaches were:

• Ransomware
• Process weaknesses
• Out-of-date security tech
• Third-party apps

We’ve spoken about cyber security threats like ransomware attacks before. But how do these other cyber risks affect businesses?

Process weakness

A process weakness takes the form of a failure or vulnerability in your cybersecurity processes and protocols. And, usually, it comes down to simple human error. It can be a missing step in your business’ security system, or simply forgetting to update your operating system to a newly-patched version. Or it could be your users not following best-practice password protocol.

These weaknesses in your security processes are easy for cyber criminals to exploit. So it’s critical that you review your processes regularly to ensure you’re protected against the latest cyber risks.

Out-of-date security tech

Similar to process weakness, out-of-date security systems are a big cyber risk for businesses. It might seem like a hassle, but updating your security software is one of the best ways to protect your business against cyber attacks.

Having the latest security software updates ensures that the latest known cyber security threats and issues are patched against, and there are no known vulnerabilities for criminals to exploit.

The operative word here is “known” threats. There may be other cyber security threats out there—they just haven’t been discovered yet. But rest assured that your platform providers and cyber security software companies are on the hunt 24/7 to uncover and fix any vulnerabilities.

The cyber risks of third party apps

Have you heard of Shadow IT? Given its name, it already sounds shady and underhanded, but it’s actually a fairly benign phenomenon. On the user end, at least.

Shadow IT occurs when your teams and employees use apps, devices, and services that haven’t been approved by your IT team. Shadow IT are the programs they download to speed up processes, the messenger apps they use because they prefer them. It’s the action of saving their work to a personal cloud folder, rather than the approved business location whether this is a server or your own cloud provider.

From their point of view it’s harmless. But in using Shadow IT, your teams are using technology that hasn’t been allowed for in your business’ IT security plans. If your IT team isn’t aware of an application or piece of software that’s being used, they can’t ensure that it’s secure.

As well as causing inefficiencies in your workflows, Shadow IT can lead to data leaks, compliance violations, and security system vulnerabilities. It makes sense: the more apps and platforms that your business uses, the broader your IT attack surface becomes.

So make sure that your teams know exactly what they should be using in their work. Ensure they’re using these platforms, and get rid of the rest.

Australia might not be prepared against cyber security threats—but you can be

While Australia as a country isn’t prepared against large-scale cyber security threats, as a businesses you can still do everything possible to ensure your workspace and networks are secure.

At GPK Group, we provide robust cyber security for Brisbane businesses to ensure you’re as prepared as possible against potential cyber risks and cyber security threats.

Get in touch with us today for a free, no-obligation discussion on how we can help keep your business safe and secure against the latest cyber security threats.

Ransomware explained: How it works and how to remove it

Ransomware is one of the most common cyber security threats against Adelaide businesses. In this article, we take a look at what this cyber risk is, and how you can protect yourself against it.

What is ransomware?

In its simplest form, ransomware is a type of malware. These cyber security threats work by tricking the user into downloading and installing a file, or clicking a link, that’s infected with that particular ransomware strain.

Once downloaded, the malware then gets to work. It locks down your system, restricting user access and files, encrypting them. You’ll then typically receive a notification that your system has been infected. This usually takes the form of an on-screen pop-up or an email, informing your that their files have been locked and encrypted. Within this notification the hackers then demand a ransom to restore your files. These days, the ransom is typically in the form of BitCoin.

Then, if you don’t pay the ransom, the hackers simply delete your files.

How ransomware spreads

Ransomware is spread in much the same way that viruses and other cyber security threats do. Hackers will send a phishing email, tricking you into opening and downloading the file, or to click through the link provided.

Occasionally it’s spread through drive-by downloads. That is, when you visit a site where the malware has been implanted. It lurks there, waiting for a user to click on that page. Then it automatically downloads itself to your computer.

Ransomware is one of the more dangerous cyber security threats

There are now more than 1,800 different strains and variants of ransomware out there, and 2021 alone has seen unprecedented levels of ransomware attacks. Attacks that have increased in sophistication, in severity, and in the volume of ransom demanded.

However, any level of cyber risk is unacceptable to a small business.

The average ransom businesses pay is over US$300,000. But that’s just on average. Smaller businesses may expect to pay $60,000, larger businesses a lot more. In March this year, computer manufacturer Acer was held to ransom to the tune of US$50 million.

Do I pay the ransom?

Despite the obvious issue that your sensitive and critical information is no longer available, the problem with ransomware that most businesses will struggle with is whether or not to pay the ransom.

By nature, the group doing the hacking aren’t going to be the most scrupulous of sorts. So will paying the ransom even ensure you receive access to your files?

The Australian Cyber Security Centre has clear guidelines on what to do in the event of a ransomware attack: Don’t pay. After all, there’s no real guarantee that the hackers will return your files or fix the damage they’ve caused.

Paying the ransom once also implies you may do so again in the future, leaving you vulnerable to future attacks.

How to remove ransomware

The best way to deal with the cyber risk of ransomware is to assume that your files and data are already gone. Instead, focus on restoring your data and files from your backups.

But let’s assume that you haven’t done this in a while.

If you were to fall victim to a ransomware attack, time is of the essence. So rather than reverse the situation, you need to focus instead on minimising the damage.

Here’s how to do it.

Step 1. Isolate the infected files or devices from your network to reduce and stop any further spread.
Step 2. Shut down wireless and Bluetooth connectivity to stifle any further spread.
Step 3. This is the hard bit. You need to identify any and all infected files or devices.
Step 4. Lock and restrict sharing access to any infected files or devices.
Step 5. Locate the original infected file. You can check your antivirus software for any alerts, or quiz your teams on any activity that may have led to malware being downloaded.
Step 6. Check your antivirus provider to determine the strain of ransomware you’re dealing with.
Step 7. Report the attack to the Australian Cyber Security Centre.
Step 8. Restore all your business systems from the latest backup.
Step 9. Run your antivirus/antimalware software as often as necessary to ensure all traces of the ransomware have been eliminated from your network.

How to combat ransomware

When it comes to ransomware, removing it yourself is a last resort. The best way to actually combat ransomware is to ensure your business performs regular, secure backups in the first place.

Keep these backups separate to your business system. The more removed they are, the safer they’ll be. Consider using both physical and cloud off-site storage, to provide multiple backup points.

Also, ensure your business practices sensible internet use. Don’t click suspicious emails or links. Only use secure networks. And make sure your antivirus software is up to date.

The best defence against ransomware is to be prepared

Ransomware is one of the most common cyber security threats impacting Adelaide businesses. So it’s crucial that your organisation is prepared.

At GPK Group we take a proactive approach to managing your business’ cyber risk, and provide robust, full-scope IT cyber security for Adelaide businesses. Contact us today to discuss a cyber security solution that stops ransomware in its tracks.

The Top 10 Most-Infamous Cyber Attacks

There have been some absolutely astounding cyber security threats in recent years. Wide-ranging, costly, and damaging the activity of large Australian businesses for days.

And while cyber security threats are becoming more insidious, and more targeted, they don’t always make the news.

So let’s look at 10 of the most infamous cyber attacks in history, and the flow-on effects these have had to cyber security for Adelaide businesses.

1. The Cambridge Analytica data scandal

Call it what you will, but the Facebook Cambridge Analytica data scandal was a sophisticated social engineering hack that was effectively hidden in plain sight.

Facebook engaged consulting firm Cambridge Analytica to create an app, This Is Your Digital Life, for research purposes. It was supposed to collect personal information from those that opted in—but ended up collecting the information from their unsuspecting friends, too.

While only 270,000 people downloaded the app, data was collected on 87 million users. This included things like names, relationship status, religion, birthdate, employers, search activity, and check-ins. The data was then used by both Senator Ted Cruz and President Trump to gain information on the political preferences of Americans during their political campaigns.

While many may not see this as a cyber attack, it was definitely one of the biggest cyber security threats in recent year, the fallout of which has changed how we view social media and its use.

2. Ashley Madison

Ashley Madison, the infamous online dating site for those already married or in relationships, was famously hacked in 2015. An online group known as The Impact Team notified the site that it had stolen the personal information of 32 million of their members, and threatened to post it online unless the site closed down.

Ashley Madison ignored them, and much to the shock of those using the site, the hacking group followed through and posted their sensitive data online, exposing those users to public scrutiny.

This breach cost the company almost $30 million in fines and damages—and untold heartache in homes all over the US.

3. Sony’s double-header

Entertainment giant Sony found itself under attack twice in the early 2010s.

In 2011 hackers stole the personal data of 77 million PlayStation users, including credit card and financial information. A distributed denial of service (DDoS) attack shut the PlayStation network down for 23 days, costing the company $15 million in compensation to its users.

They bore the brunt of further cyber security threats in 2014, falling victim to a malware attack. The hackers gained access to employee emails, confidential film scripts, employee salary information, and copies of unreleased films. They then used wiping malware to attack Sony’s computing infrastructure.

It was determined that the attack came from a North Korea-sponsored group, in response to their views against the Seth Rogen and James Franco film, The Interview.

4. Adobe

Globally-used and loved creative platform Adobe fell victim to a cyber security threat in 2013, when they announced a backup server had been hacked. The hackers stole the personal data of 153 million of its users, including usernames and passwords. This information was then dumped online.

5. Celebgate

Celebgate wasn’t a large-scale attack, but it was certainly well publicised. In 2014, a group of hackers used spearphishing tactics, creating emails that mimicked official Google and Apple emails, to gain the usernames and passwords to celebrity cloud accounts. Their goal was to steal private images of female celebrities.

Hundreds of big-name actors were impacted by this, and had their personal and private images dumped onto imageboards across the internet.

The cyber security threat implications of this attack are still being felt, and similar instances continue to occur. It goes to show that cyber crime isn’t always about dollars; often it’s purely out of spite, to cause chaos.

6. Wannacry

The 2017 Wannacry ransomware attack was a cyber security threat that impacted around 230,000 computers in more than 150 countries. The hackers target computers running Microsoft Windows, demanding payments in BitCoin.

What was particularly insidious about this attack was that it included a mechanism that enabled it to copy and then spread by itself. Users that hadn’t installed the most recent April 2017 Windows security patch fell victim to the attack. And it was a vicious one, with victims hearing reports that no infected businesses who paid the ransom ever actually received their data back.

At the end of the campaign, a total of 327 payments had been made, totalling US$130,634.77

Notably, the UK’s National Health Service, Indian State Government organisations, Nissan, Boeing, and FedEx were all hit by the Wannacry attack.

7. SolarWinds

December 2020 saw the US Government fall victim to a mammoth cyber attack. Unknown actors inserted malicious code into SolarWinds’ Orion network management software used by Fortune 500 companies all over the world, including firms like Microsoft. At least 6 US government departments were impacted. This included, concerningly, the National Nuclear Security Administration, and the Department of Homeland Security.

This code went undiscovered, and SolarWinds even sent a security update to its users that included this malicious code.

It’s unclear to what extent these users have been breached, or even what data has been stolen, making this one of those significant cyber security attacks ever.

8. Zoom

As the world shifted to working remotely, businesses and individuals were quick to roll out the Zoom platform. But as its user base grew, so too did interest from cyber criminals.

One well-publicised cyber security threat saw the user account credentials, passwords, and meeting URLs stolen, and put up for sale on the dark web.

Zoom reacted by implementing crucially-missing security measures, including meeting IDs and passwords.

9. Yahoo!

Yahoo! just can’t seem to catch a break. The search has fallen victim to cyber security threats on at least three separate occasions.

In 2014 they had 500 million user accounts breached, where senstive personal information like phone numbers, passwords, and birth dates were stolen. In 2018 it reported a breach of 32 million user accounts.

But neither of these compare to their 2013 breach, where it revealed that 3 billion user accounts had been stolen.

10. Target’s bad luck with credit card details

Target’s attacks are notable as the first time a retailer of this size was the victim of an attack on this scale.

In 2013 in the US, during the Black Friday, the details of 40 million Target customer credit card accounts were compromised. This happened again in 2014, with another 70 million credit card account details being compromised.

So, what have we learned?

While it seems that some of these businesses haven’t put their learnings into action, that doesn’t mean you can’t.

GPK Group provides smart cyber security for Adelaide businesses, so you get peace of mind that you’re protected against cyber security threats.

Reach out to us today for a free, no-obligation discussion on how we can help your business remain safe and secure against the latest cyber security threats—and so you don’t see your name in this list.