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Infostealers uncovered: How to protect your data from silent cyber threats

A conceptual illustration of a hooded cybercriminal with binary code patterns on their clothing, symbolising infostealers. The figure is reaching into a glowing laptop screen displaying icons for email, social media, and cloud services. Surrounding the laptop are floating cryptocurrency symbols and digital locks, highlighting the growing cyber security threats to SMEs and the importance of protecting sensitive data.

Cyber criminals have a new favourite tool in their arsenal: infostealers. These silent threats infiltrate devices, swipe sensitive data, and vanish without a trace. From stolen credentials to financial information and even cryptocurrency wallets, infostealers are wreaking havoc on individuals and businesses alike.

IBM’s 2024 X-Force Threat Intelligence Index confirms what many cyber security experts have feared—identity theft is now the top attack vector for enabling cybercrime globally. The report paints a stark picture of the rise of infostealer malware and its devastating impact. Let’s explore the findings, the risks, and how you can protect yourself and your business.

A growing identity crisis

IBM’s report reveals alarming trends in cybercrime, with identity-related attacks taking centre stage. Here are the key findings:

  • Abuse of valid accounts surged 71% year-over-year, now accounting for 30% of initial access vectors.
  • Breaches involving compromised credentials required 190% more effort to remediate than average.
  • Data theft and leaks rose to 32% of all cases, surpassing extortion as the top impact.
  • Infostealer malware activity spiked by a staggering 266%.
  • Security misconfigurations made up 30% of web application vulnerabilities.

Michelle Alvarez, strategic threat analysis manager at IBM X-Force, explained:

“While we anticipated the use of valid credentials to land in the top three initial access vectors, we did not expect it to tie with phishing nor for there to have been such a significant increase in volume of these attacks year-over-year (71%).”

These numbers highlight a worrying trend: cyber criminals are focusing more on identity theft, using infostealers to collect credentials and exploit them for initial access.


How infostealers operate

Infostealers are malicious programs that quietly extract valuable information from infected devices. They target:

  • Passwords, usernames, and authentication tokens.
  • Financial data, including credit card details and cryptocurrency wallets.
  • Personal information stored in browsers or applications.

Once installed, they can record keystrokes, take screenshots, and even install additional malware. This stolen data often ends up on illegal platforms like the “Russian Market,” where cyber criminals sell it at rock-bottom prices. Even worse, stolen credentials often serve as a gateway to larger attacks, including ransomware, amplifying the damage.


The hidden costs of infostealers

The consequences of infostealer attacks go beyond stolen data. Businesses and individuals face:

  • Increased recovery time: Breaches involving compromised credentials require 190% more effort to remediate.
  • Escalated financial losses: Cyber criminals use stolen credentials to access accounts, steal funds, or execute further attacks.
  • Damaged trust: Data leaks can erode customer confidence, tarnishing your reputation.

With the surge in identity-related attacks, the stakes have never been higher. 


What can you do to protect your data?

The good news is that you can take steps to defend against infostealers and minimise risk. Here’s how:

1. Avoid suspicious apps and ads

Free games and tools might seem harmless, but they can be loaded with malware. Stick to verified sources for downloads.

2. Keep devices updated

Updates often patch vulnerabilities that infostealers exploit. Don’t delay those notifications—they could save you from a breach.

3. Enable multi-factor authentication (MFA)

MFA creates an additional layer of security, making it harder for attackers to access accounts, even with stolen credentials.

4. Invest in quality antivirus software

A reliable antivirus program can detect and block infostealers before they cause harm.

5. Educate your team

For businesses, regular training helps employees spot phishing attempts and other threats, reducing the risk of accidental installations. Find out about a cyber awareness training

6. Monitor network activity

Proactive monitoring can detect unusual behaviour, such as infostealers communicating with external servers.

Taking action now is critical

Infostealers represent a growing threat, but with the right measures, you can stay one step ahead. Whether it’s implementing MFA, investing in cyber security tools, or training your team, every step helps to protect your data and business from these silent thieves.

At Cloud & More, we specialise in helping businesses strengthen their cyber security. From regular security audits to advanced endpoint protection, we’ve got the tools and expertise to keep infostealers at bay.

Ready to take control of your cyber security? Let’s chat—we’re here to help.

Protect your business from cyber threats today.

Get in touch with Cloud & More to learn how we can help secure your data and keep infostealers at bay. Let’s talk!

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Frequently Asked Questions about Infostealers

1. What exactly is an infostealer?

An infostealer is a type of malware designed to silently collect sensitive data like passwords, financial details, and personal information from your devices. It works in the background, sending the stolen data to cybercriminals without your knowledge.


2. How do infostealers get onto my device?

Infostealers can enter your device through:

  • Clicking on suspicious links or ads.
  • Downloading free apps, games, or software from untrusted sources.
  • Opening phishing emails or malicious attachments.
  • Visiting compromised websites.

3. What makes SMEs a target for infostealers?

Cybercriminals often assume SMEs lack the robust security measures of larger businesses. Additionally, SMEs might store valuable data (like customer information) that can be sold or exploited, making them attractive targets.


4. How can I tell if my device has been infected with an infostealer?

Infostealers are designed to be stealthy, so visible signs can be rare. However, you might notice:

  • Unexpected account logins or unauthorised transactions.
  • Unusual device behaviour, such as slow performance or pop-ups.
  • Warnings from antivirus or security software.

Regular monitoring and using security tools can help detect infostealers before they cause damage.


5. What should I do if I suspect an infostealer on my device?

If you think your device has been infected:

  1. Disconnect it from the internet to prevent further data theft.
  2. Run a full scan using trusted antivirus software.
  3. Change passwords for all accounts, prioritising financial and business accounts.
  4. Contact a cyber security professional for further assistance.

6. Can infostealers lead to bigger cyber attacks?

Yes, infostealers often act as a gateway for more significant attacks like ransomware. Stolen credentials can give attackers access to systems, enabling them to deploy more destructive malware.


7. How does multi-factor authentication (MFA) help?

MFA adds an extra layer of security to your accounts by requiring two or more forms of verification, like a password and a one-time code sent to your phone. Even if an attacker steals your password, they’ll struggle to bypass MFA.


8. How much does it cost to protect my SME from infostealers?

The cost varies depending on the level of protection you need, but some essential investments include:

  • Antivirus software.
  • Multi-factor authentication tools.
  • Cyber security awareness training for your team.
  • Regular system updates.

Cloud & More offers scalable security solutions tailored for SMEs, so you don’t have to break the bank to stay secure.


9. What’s the most effective way to prevent infostealer attacks?

The best approach is a combination of:

  • Educating your team to recognise potential threats.
  • Keeping software and devices updated.
  • Using reliable cyber security tools.
  • Monitoring your network for unusual activity.

10. Where can I get help securing my business?

You don’t have to tackle cyber security alone! At Cloud & More, we specialise in helping SMEs protect their data with proactive, relationship-focused solutions. Whether it’s a one-off audit or ongoing support, we’re here to help. Get in touch today to learn more.

Worried about cyber threats like infostealers?

Get a FREE IT risk assessment from Cloud & More! We’ll help identify vulnerabilities and show you how to protect your business. Book your assessment today—because prevention is better than cure.

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