South Africa faces a major cybersecurity crisis as researchers discover over half a billion cookies linked to South African users being sold on the dark web. The country now ranks 35th globally out of 253 nations for cookie data breaches.
Cybersecurity company NordVPN released research showing that 546 million cookies belonging to South African internet users have been stolen and are circulating on dark web marketplaces. These digital fingerprints contain personal login details, browsing habits, and sensitive account information that criminals can use to access private accounts without needing passwords.
Record-Breaking Global Cookie Theft Operation
The South African breach is part of a much larger global problem. Researchers found nearly 94 billion stolen cookies worldwide on dark web platforms – a shocking 74% increase from 54 billion cookies discovered just one year ago. This represents the largest cookie theft operation ever documented.
Of the stolen South African cookies, 9.35% remain active, meaning over 51 million cookies are still functional and pose an immediate threat to users. Active cookies allow criminals to log into accounts, make purchases, and steal personal data without triggering security alerts.
“Most people don’t realize that a stolen cookie can be just as dangerous as a password. Once intercepted, a cookie can give hackers direct access to accounts and sensitive data, no login required.” says Adrianus Warmenhoven, cybersecurity expert at NordVPN.
How Criminals Steal and Use Cookies
Cookies are small files that websites store on your computer to remember your preferences, keep you logged in, and track your browsing behavior. While they make internet browsing more convenient, they also contain valuable personal information that criminals want.
Cybercriminals use malware programs to steal cookies directly from people’s computers and phones. Once stolen, these cookies act like digital keys that let criminals access your accounts without knowing your password. They can read your emails, make purchases with your stored payment cards, and even access work systems if you use the same device for business.
The stolen data often includes full names, email addresses, home addresses, and passwords. This information feeds identity theft schemes, online fraud, and unauthorized account takeovers that can cost victims thousands of dollars and years of credit problems.
Dangerous Malware Behind the Attacks
The cookie theft operation uses 38 different types of malware – more than triple the 12 types seen in 2024. The three most active malware families responsible for the massive theft are:
- Redline: Stole 41.6 billion cookies worldwide
- Vidar: Responsible for 10 billion stolen cookies
- LummaC2: Harvested 9 billion cookies
These malware programs spread through infected email attachments, fake software downloads, and malicious websites. Once installed on a device, they quietly scan and steal all saved passwords, cookies, and personal files before sending the data to criminal networks.
Security researchers also identified 26 new malware strains that weren’t seen in 2024, including dangerous new variants like RisePro, Stealc, Nexus, and Rhadamanthys. This rapid evolution shows how quickly cybercriminals adapt their tools to steal more data.
Major Platforms Targeted in Cookie Theft
The stolen cookies came from popular websites and services that millions of people use daily. The platforms with the most stolen cookies include:
- Google: 4.5 billion stolen cookies
- YouTube: 1.33 billion stolen cookies
- Microsoft: Over 1 billion stolen cookies
- Bing: Over 1 billion stolen cookies
These numbers show that even major tech companies with advanced security cannot fully protect user data from determined cybercriminals. The widespread nature of the theft means that anyone who uses these popular services could be at risk.
Simple Steps to Protect Your Data
Internet users can take several basic steps to protect themselves from cookie theft and malware attacks:
- Use Strong, Unique Passwords: Create different passwords for every online account and use a password manager to keep track of them. This limits damage if one account gets compromised.
- Enable Two-Factor Authentication:Â Turn on two-factor authentication (2FA) wherever possible. This adds an extra security layer that makes it harder for criminals to access accounts even with stolen cookies.
- Keep Devices Updated:Â Install security updates for your phone, computer, and web browsers as soon as they become available. These updates often fix security holes that malware exploits.
- Clear Browser Data Regularly:Â Delete cookies, browsing history, and stored passwords from your web browser every few weeks. Many people don’t realize that closing a browser doesn’t always end active sessions, leaving cookies vulnerable to theft.
- Be Careful What You Click: Avoid clicking suspicious links in emails, text messages, or social media posts. Don’t download software from unofficial websites or open email attachments from unknown sources.
- Use Antivirus Software:Â Install reputable antivirus software that can detect and block malware before it steals your data. Keep the software updated and run regular scans.
“Taking basic precautions like using strong passwords, enabling MFA, and staying alert online can significantly reduce the risk of falling victim to cyberattacks. It’s a small investment of time that can protect you from big threats.” Warmenhoven explains. “
South Africa’s Growing Cybersecurity Challenge
The cookie theft discovery comes as South Africa faces increasing cybersecurity threats across multiple sectors. Earlier in 2025, major South African telecommunications companies including Cell C and MTN Group suffered separate data breaches that exposed customer information.
The country’s rapid digital adoption during recent years has created new opportunities for cybercriminals. More people banking online, shopping digitally, and working remotely means more valuable data for criminals to target.
South African authorities introduced mandatory data breach reporting requirements in April 2025, requiring organizations to report security incidents through an official e-portal system. However, individual users remain largely responsible for protecting their own data through good security practices.
The discovery of 546 million stolen South African cookies serves as a wake-up call for both individuals and businesses to take cybersecurity more seriously. With cookie theft operations growing by 74% year-over-year, the threat will likely continue expanding unless users take proactive steps to protect their digital lives.
