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A vulnerability has been discovered within AMD processors which has the potential to expose affected PCs to incredibly stealthy strains of malware.

AMD processors are used to power computers, and this is achieved by executing instructions within software applications. Therefore, everything you do on a PC is powered by a processor e.g. running Windows, processing data, and calculations. Some processors are more powerful than others, and the type chosen depends on the user’s need e.g. a diehard gamer will need a high-performance processor to get the best gaming experience, while someone working in a small office will need something less powerful to complete word processing tasks.

As AMD is a highly popular manufacturer of PC processors, we’re going to take a close look at this vulnerability and discuss the impact it could have on your PC users.

Understanding the AMD Chip Vulnerability

The vulnerability in AMD’s chips was discovered by the security firm IOActive, who has named the vulnerability Sinkclose. The flaw was first found in October 2023, but it appears Sinkclose has been present in AMD processors for close to two decades, a remarkable amount of time for a vulnerability to go unnoticed.

Sinkclose affects a specific operating mode within the processors named System Management Mode. This function is used to control systemwide processes including power management and system hardware control. Key to the Sinkclose vulnerability is the fact that System Management Mode also offers high privilege access. And it’s this access which, potentially, could allow a threat actor to run malicious code undetected.

Gaining access deep enough within a PC to even tackle the System Management Mode is difficult for even the most skilled hackers, but it’s not impossible. After infecting a machine with a bootkit – a form of malware w hich executes very early in the boot process – a threat actor could make their way deep within the system. And if a threat actor does manage to install malware through the Sinkclose vulnerability, the location of the infection means it would survive multiple reinstallations of Windows.

Are You Safe from Sinkclose?

With the Sinkclose vulnerability potentially active since 2006, and IOActive warning that all AMD chips dating back to this period could be affected, the potential damage is huge. AMD has been quick to respond and, since Sinkclose was first identified last year, has been working on an update ever since. Patches for AMD Ryzen and Epyc chips have recently been issued, but clearing up this debacle looks to be a long-term project for AMD.

While the threat is currently difficult to exploit, if threat actors discover an effective method to abuse it, countless PCs could be at increased risk of being compromised. Therefore, it’s crucial you follow these best practices to maintain the security of your PCs:

Antivirus and Anti-malware Tools: always implement reputable antivirus and anti-malware software across your network. These security solutions, which are regularly updated against the latest threats, offer continuous scanning, real-time protection and the option to quarantine suspicious files before removing them safely.
Install All Updates Promptly: one of the most important security steps you can take is to ensure you regularly update all your software, including operating systems and applications. This is the best way to make sure they’re patched against any existing or new vulnerabilities. Automated patch management tools can simplify this process, and Windows provides options for automatic updates of Microsoft apps.

For more ways to secure and optimize your business technology, contact your local IT professionals.

The 5 Best Tips for Keeping Your PCs Running Smoothly

Antivirus, Battery usage, Bundled software, Laptop ventilation, Ophtek, PC care, PC efficiency, Startup appsantivirus, battery usage, bundled software, Ophtek, PC care, PC efficiency, startup appsOphtek, LLC

Sep 2024

The key to a successful IT infrastructure is ensuring that your PCs are cared for and run smoothly. However, not everyone knows how to achieve this.

Computers which are not performing optimally can have a negative impact on your organization’s productivity. Accordingly, you need to make sure your devices – both PCs and laptops – are correctly cared for. Devices which have been looked after will offer both high productivity and a long lifespan, both attractive factors for any business.

But where do you start? After all PCs are such complex machines that it may seem overwhelming to organize and schedule a plan to put your technology back on track. Luckily, Ophtek is here to serve up our 5 best tips for keeping your PCs running smoothly.

Transforming Your PCs into Efficient Machines

The good news is that you don’t need to get too technical to maintain and enhance the productivity of your devices. Instead, you can start with relatively simple practices to take care of your PCs and boost their performance:

Keep Your Laptops Ventilated: Laptops are fantastic devices for employees who are on the move, but they’re also prone to overheating and this can impact a laptop’s performance. Therefore, you need to keep them ventilated at all times. You can do this easily by following the best laptop ventilation practices. Always use laptops on a flat surface and, if possible, elevate them with a laptop stand to enhance ventilation. You also need to ensure laptops are kept clean, so use compressed air to blast out any dust buildup in ports.
Minimize Startup Applications: Many PCs end up running far too many apps at startup, and this can slow your startup time and compromise performance. To address this, press Ctrl + Alt + Delete and then select the Task Manager option on the resulting menu. Head into the ‘Startup apps’ tab and disable any unnecessary apps from loading at startup e.g. if Xbox App Services is showing as enabled, and you don’t use an Xbox, you may as well disable this.
Beware of Bundled Software: Often, when you’re installing software downloaded from the internet, additional and unnecessary software is included with the download. The software manufacturer is paid to include these additional downloads, but they almost always serve no purpose for the end user. And this takes up valuable storage space on your devices. So, when installing software, always check the installer pop-up windows and make sure you tick the option to not include bundled software.
Perform Antivirus Scans: There’s no such thing as good malware, and even the least dangerous malware will put a strain on a PC’s resources. This is why it makes sense to perform regular antivirus scans to eliminate any potential threats to your PC’s performance. Free antivirus software such as Malwarebytes, AVG, and McAfee will all run automated background scans and instantly alert you to any security issues which need addressing.
Optimize Laptop Battery Usage: New laptops come with a long battery life, but this doesn’t mean you should neglect optimizing them. Not only will this keep your laptop powered for longer, but it will improve the longevity of your battery. If you type “edit power plan” into your Windows search bar, you will be provided with a wide range of battery options such as putting the computer to sleep or turning the display off after a set amount of inactivity.

For more ways to secure and optimize your business technology, c ontact your local IT professionals.

Latin America Banks Targeted by BBTok Malware Variant

anti malware, antivirus software, banking malware, banking trojan, BBTok Malware, firewall, Ophtek, Phishing Emailanti-malware, antivirus, banking malware, BBTok, firewall, malware, Ophtek, phishingOphtek, LLC

Nov 2023

Back in 2020, a new banking trojan by the name of BBTok emerged into the digital landscape and was responsible for numerous attacks. And now it’s back.

Banks in Brazil and Mexico appear to be the main targets of BBTok’s new campaign, and it’s a variant which is far more powerful than any of its previous incarnations. Its main deceptive threat is that it is able to spoof the interfaces of 40 different banks in Brazil and Mexico. This means that it’s perfectly placed to harvest sensitive data. In particular, this new strain of BBTok is deceiving victims into disclosing their credit card details and authentication codes. This gives the campaign a financial angle and highlights the serious threat it poses.

How Does BBTok Launch Its Attacks?

BBTok’s latest strategy begins with a phishing email, one that contains a malicious link which kickstarts the attack by launching the malware alongside a dummy document. BBTok is particularly successful as it has been coded to deal with multiple versions of Windows, and it also tailors the content of the attack to both the victim’s country and operating system. BBTok also allows the threat actors behind it to execute remote commands and steal data without the victim being aware.

Most notably, however, is the way in which BBTok replicates the interface of numerous banking websites – such as Citibank and HSBC – to truly deceive the victim. Appearing to be genuine at first glance, these interfaces are used to trick victims into entering security codes and passwords associated with their accounts. This gives the threat actors full access to their financial data and, more disturbingly, full control over their finances. This means that unauthorized payments and bank transfers can quickly land the victim in severe financial trouble.

How to Stay Safe from Banking Malware

In an increasingly digital world, where we all make numerous financial transactions online every week, it’s important to remain guarded against banking malware. As well as the financial damage that malware such as BBTok can cause, it can also create a foothold for threat actors to delve deep into your networks. And this represents a major threat to the security of both your data and your customer’s data. Accordingly, you need to stay safe, and here are some crucial tips to help you:

Beware of phishing emails: your employees should always be cautious when opening emails or clicking on links from unknown sources. As with BBTok, many banking trojans spread through phishing emails which trick you in to visiting fake banking websites. This provides threat actors with the perfect opportunity to harvest your credentials. Therefore, make sure that your employees know how to quickly identify a phishing email and what to do with them.
Install a firewall: putting a firewall in front of your network is a vital step in strengthening your digital defenses. Firewalls act as keen-eyed gatekeepers who scrutinize incoming and outgoing traffic, this allows them to determine whether traffic is trusted and whether any alarms need to be raised. Banking trojans, of course, often transmit stolen data out of your network, so a firewall is the perfect way to identify and prevent this activity.
Strong endpoint security: to protect your network against malware, it’s essential that you employ robust cybersecurity measures throughout your business. In particular, employee workstations and mobile devices are most at risk, so installing advanced antivirus and anti-malware software here should be a priority.

For more ways to secure and optimize your business technology, contact your local IT professionals.

5 Useful Tips for Setting Up a New PC

Antivirus, Compatability, Default Browser, New PC, Ophtek, Power Options, Updatesantivirus, Compatability, Default Browser, New PC, Ophtek, Power Options, updatesOphtek, LLC

Jan 2022

An organization which keeps on top of productivity will regularly replace PCs which have become outdated. But what are the best ways to set up a new PC?

A new PC should instantly bring a boost to productivity to its user, but there’s always room for improvement. The complexity of hardware and software mean that it’s virtually impossible to get a PC’s configuration exactly right, especially the first time that it’s started up. However, there are a few useful tips which can help your organization maximize the functionality of its new PCs from day one. It’s merely a question of understanding the procedures behind this and then taking the time to implement them.

Luckily, we’ve decided to save you some time by outlining five useful tips for setting up a new PC.

Getting Your New PC Up to Speed

If you want to get your PC set up correctly and effectively, make sure you are mindful of these best tips:

Check for Updates: While a new PC is ‘new’ it’s not completely new as its likely been sat in a warehouse for some time before being shipped. As a result, there are likely to be new updates available for not just Windows, but many of the applications pre-installed on the PC. Therefore, one of the first things to do is check for Windows Updates. You can then install these updates to ensure your new PC is as secure and productive as it should be.
Run Your Antivirus Software: It’s not unheard of for new PCs to be pre-infected with malware before they leave the factory. Accordingly, it makes sense to run your antivirus software before a new PC is connected to the internet. This strategy ensures that your PC has the best chance of entering your network with the minimum security risk.
Select Your Default Browser: Connecting to the internet is an important part of business life these days, but there are several options when it comes to browsing the internet. As an organization, it’s useful to adopt a company-wide default browser. Not only does this allow technical issues to be minimized, but it makes training much simpler. So, once a PC has been started for the first time, make sure you apply the default setting to your preferred browser.
Check Existing Hardware is Compatible: A new PC doesn’t mean that you have to replace each and every piece of associated hardware. A mouse, for example, should be fine to keep and connect to your new PC. However, these pieces of hardware may not always be compatible with a new PC or operating system. Therefore, take the time to test existing peripherals to confirm if they can be transferred over or need replacing.
Set Power Options for Laptops: If you are dealing with a new laptop then you need to make sure that its power options are optimized. Your employees are unlikely to be proficient in fine tuning this to provide maximum battery life, so make a point of implementing the best settings for them.

For more ways to secure and optimize your business technology, contact your local IT professionals.

What Do You Need in Good Antivirus Software?

anti malware, Antivirus, Cyber Security, Data Security, email security, firewall, Ophtekantivirus, Cyber Security, Data Security, email security, firewall, OphtekOphtek, LLC

Jul 2021

Antivirus software is a sure-fire way to keep your PC protected against malware. But you need to make sure it has the right features for your organization.

No two pieces of antivirus software are the same. And there are a lot of different antivirus tools available. In fact, if you google the term “antivirus software” you will be faced with 175 million search results. Not surprisingly, the sheer range of options available can make choosing one a daunting task. But it doesn’t need to be this difficult. All you need to do is understand what the most important features are in antivirus software.

The Essential Antivirus Software Features

As I advised earlier, there are many different antivirus tools trying to get your attention. And they all contain a collection of different features. The most essential ones that you should be looking for are:

Malware Scans: The biggest threat to your organization’s IT infrastructure will come from malware. And it’s a threat which can easily lurk undetected on your network. However, thanks to the power of collective databases, most of this malicious software can quickly be identified by its code. Good antivirus software will connect to these databases and use the inventory to verify every file on your network. Anything identified as malicious can then be quarantined and investigated before being deleted.

Firewall Availability: Many antivirus software packages will include a firewall and this feature can prove invaluable. It’s a tool which is employed to monitor all incoming and outgoing connections to your network. Essentially a barrier between your organization and the internet, a firewall allows you to restrict access to any unidentified connections while recognized and permitted connections can operate freely.

Email Scans: One of the best ways for a hacker to gain access to your organization’s network is via email. It’s a venture which typically succeeds when an infected email attachment or malicious link is activated by the recipient. And these infections can be very powerful. Ransomware is easily spread through malicious emails and phishing scams, of course, are particularly prevalent. Thankfully, many pieces of antivirus software can scan all incoming emails to evaluate the danger contained within.

Download Protection: Most files that you download from the internet will be fine e.g. software installation packages or even plain old spreadsheets. But there’s always a chance that you may download some malicious software. And, in many cases, it’s easy to find yourself fooled by authentic looking websites. A good antivirus suite, however, should be able to scan all downloaded files in real time to verify if they are safe. Often, if the file is hosted on a malicious website, antivirus software will not even allow you access to the site in the first place.

Final Thoughts

Basic antivirus software is available for free and, despite some limitations in its functionality, can provide you with powerful protection. However, when you start paying for antivirus software you can expect to gain even more features and some much-needed technical support. Regardless of which option you go for, though, antivirus software should be an essential part of any organization’s fight against cyber-crime.

For more ways to secure and optimize your business technology, contact your local IT professionals.

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