Vietnam’s Social Media Heists & The Rise of Asia’s Cybercrime Underground

A new type of cybercriminal is emerging across Asia-Pacific — and they’re running their operations like a business. From Vietnam to China, these threat actors are turning cybercrime into a finely tuned commercial enterprise — complete with customer service, marketing, and even escrow services.

In today’s episode, we’re diving into the latest insights from the CrowdStrike 2025 APJ eCrime Landscape Report — and what they mean for businesses here in Australia. We’ll look at how Vietnamese groups are hijacking social media ad accounts, how Chinese-language marketplaces are fuelling a black economy of crime, and why AI-powered ransomware is now spreading faster than ever.

Welcome to the Don’t Be A Sitting Duck Podcast, I’m Leigh Kefford — let’s dive in.

Vietnam has quietly become one of the most active cybercrime hubs in the region. But this isn’t the old-school ransomware story — these attackers are after digital marketing gold. Over 20,000 business social media accounts were compromised in the past year, targeting companies with big advertising budgets.

Here’s how it works. A Vietnamese malware developer creates a program — like Ailurophile Stealer or FatStealer — designed to harvest cookies, passwords, and ad balances from browsers and Facebook Business accounts. The malware spreads through fake software downloads and malicious ads. Once infected, the attacker logs in, transfers ownership of the ad account, and drains the ad spend or resells the profile access to other criminals.

Why it matters? Because these aren’t isolated attacks — they hit the heart of business credibility. Losing your ad account means losing visibility, revenue, and trust. It’s like handing your billboard to a scammer.

Take Action:

• Enable multifactor authentication on all business accounts — not just email.
• Restrict ad account roles and remove unused users.
• Regularly check for unfamiliar browser logins and device access in your Meta Business settings.

Now let’s zoom out. Vietnam isn’t alone. Across the Asia-Pacific, ransomware groups like OCULAR SPIDER and BITWISE SPIDER are still active — but a new wave of criminals are monetising stolen credentials and social media data. The underground marketplaces — with names like Chang’an and FreeCity — operate like Amazon for hackers. They sell stolen data, malware kits, and even access to pig-butchering scam networks worth billions.

These marketplaces thrive on Telegram, using escrow services and cryptocurrency to hide transactions. One of the biggest, Huione Guarantee, reportedly processed over 27 billion U.S. dollars before being shut down by authorities.

So what’s next? CrowdStrike’s report warns of “enterprising adversaries” — cybercriminals who use AI to scale their operations, test phishing campaigns, and find weak points faster than ever. We’ve entered the age of business-like hackers: efficient, organised, and global.

Here’s what you can do right now:

Take Action:

• Review your security stack for blind spots — especially unmanaged devices and old admin accounts.
• Educate your team. Most attacks still start with a click.
• And if you’re unsure how your systems stack up, book an Empower Systems Assessment at nationalpc.com.au/empower.

The takeaway is simple — cybercrime in our region isn’t slowing down, it’s evolving. And while we can’t stop every attack, we can make sure our businesses aren’t easy targets.

That’s a wrap for today’s episode! Want more cybersecurity insights? Head over to sittingduck.com.au for show notes, resources, and the latest updates. Thinking about your business security? Here’s what to do next: Book your free Empower Systems Assessment to uncover vulnerabilities and learn how to strengthen your defences. Listen to my audiobook, Sitting Duck – The Phone Call You Don’t Want to Receive—a real-world look at Business Email Compromise. Available now on Spotify and leading audiobook platforms.

Until next time—stay safe, stay informed, and don’t be a sitting duck!

This podcast was produced by National PC, delivering expert cyber security services in Townsville and Cairns through our Empower Managed IT solutions—secure, reliable, and built for North Queensland businesses.